CBSE IX Physics Motion
1. A car is travelling along the road at 8 m/s .It accelerates at 1m/s2 for a distance of 18m. How fast is it travelling?
2.The distance between mumbai to delhi is 1384. A train starts from Mumbai at 4pm and reaches delhi at 10 am the next day.What is its average speed?
3.State the 3 equations of motion. Which equation describes velocity-time relation and position -time relation?
4. A cheetah starts from rest and accelerates at 2 m/s2 for 10 seconds. Calculate the final velocity and the distance travelled?
Asked by Vaibhav BR
16th May 2014
11:55 AM
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CBSE X Physics Sources of Energy
AN OBJECT MOVES WITH ACCELERATION "ALPHA" FOR SOME TIME AND "BETA"FOR ANOTHER TIME.THE OBJECT STARTS FROM REST AND IN ANOTHER HALF FINALLY COMES TO REST .THE EVENT TAKES PLACE IN TIME "t".FIND THE MAXIMUM VELOCITH ATTAIED AND TOTAL DISTANCE TRAVELLED BY THE OBJECT?
Asked by ENGLISH DSOUZA
4th June 2014
6:12 AM
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CBSE XI Science Physics Motion in a Straight Line
the position of the particle along x-axis varies with time as
x = 4t2 - 6t + 1, then:
(a) What is the velocity at t = 0?
(b) When does velocity become zero?
the position of the particle along x-axis varies with time as
x = 4t2 - 6t + 1, then:
(a) What is the velocity at t = 0?
(b) When does velocity become zero?
Asked by Masood khan
15th June 2015
1:07 PM
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CBSE XI Science Physics Motion in a Straight Line
A student goes from his house to his friend's house with speed v1. Finding the door of his friend's closed,return back to his own house with the speed v2. Then the average speed of the student is
Asked by Anil
28th May 2017
6:28 PM
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CBSE XI Science Physics
The velocity of a particle moving on the x-axis is given by v=x^2+x, where x is in m and v is in m/s. What is its position when its acceleration is 30 m/s^2
Asked by Anil
18th June 2017
7:59 PM
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CBSE XI Science Physics Motion in a Straight Line
q
Asked by gpnkumar0
2nd October 2017
11:23 AM
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CBSE XI Science Physics Motion in a Straight Line
q
Asked by gpnkumar0
2nd October 2017
11:27 AM
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CBSE IX Physics
A hot air balloon starts rising from ground with an acceleration 1.25m/second square. After 8 sec, a stone is dropped from the balloon. The balloon will-
A)cover a distance of 40m before hitting the ground
B) have a displacement pf 50m on hitting the ground
C)reach the ground in 4 seconds
Asked by adityaahuja099
11th October 2017
6:08 PM
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JEE Plances JEE (Main) Physics Centre of Mass and the Law of Conservation of Momentum
a small ball is dropped from a height h onto a rigid frictionless plate at b and rebounds find the maximum height reached after rebound if the coffecient of restitution between the ball and the plate is e=0.75
Asked by harinderk13
30th October 2017
10:44 AM
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NEET1 ALL Class Kinematics
A car starts from rest with an acceleration of 6 m/s2 which decreases to zero linearly with time, in 10 seconds, after which the car continues at a constant speed. Find the time required for the car to travel 400 m from the start.
Asked by Arushi Juyal
12th November 2017
3:07 PM
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NEET1 NEET1 Kinematics
A particle starts from rest and traverses a distance l with uniform acceleration, then moves uniformly over a further distance 2l and finally comes to rest after moving a further distance 3l under uniform retardation. Assuming entire motion to be rectilinear motion, the ration of average speed over the journey to the maximum speed on its way is:
Asked by Arushi Juyal
12th November 2017
3:22 PM
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ICSE IX Science Laws of Motion
Solve this problem: A body moving with uniform acceleration Travels 84 metre in the first 6 second and 180 m in the next 5 seconds. find: (a) the initial velocity ,and (b) the acceleration of the body.
Asked by Karuna
19th November 2017
11:35 AM
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JEE Plances ALL Class Physics Motion in a Plane
please solve the question
Asked by jaychandran1967
1st December 2017
10:39 PM
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NEET1 ALL Class Kinematics
please explain
Asked by Arushi Juyal
16th December 2017
6:39 AM
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ICSE VIII Physics Force and Pressure
A car of mass 1000kg is moving with a certain speed when a constant breaking force of 1000 N acts on it for 5 seconds and the speed of car reduces to half its original speed. Find the further time required to stop the car if the same constant force acts.
Asked by mkp400
17th December 2017
12:26 PM
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JEE Plances ALL Class Physics Motion in a Straight Line
please solve the question
Asked by jaychandran1967
19th December 2017
8:13 PM
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JEE Plances ALL Class Physics Motion in a Straight Line
a 2m wide truck is moving with a uniform speed of 8m/s along a straight horizontal road. a pedestrian starts crossing the road at an instant when the truck is 4m away from him. the minimum constant velocity with which he should run so as to avoid the accident
Asked by jaychandran1967
20th December 2017
11:46 AM
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CBSE IX Physics Force and Laws of Motion
A boy on a cliff 19.6m high drops a stone. 1 second later he throws a second stone after the first. They both hit the ground at the same time. With what speed did he throw the second stone?
Asked by aahnik.mohanty
24th December 2017
8:29 PM
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JEE Plances ALL Class Physics Motion in a Straight Line
Solve this
Asked by venkat
25th December 2017
8:56 PM
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JEE Plances ALL Class Physics Motion in a Straight Line
Solve this
Asked by venkat
25th December 2017
9:03 PM
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JEE Plances ALL Class Physics Motion in a Straight Line
Solve this
Asked by venkat
25th December 2017
9:06 PM
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CBSE IX Physics Force and Laws of Motion
2 identical bodies are allowed to fall from different heights h1 and h2. The ratio of their momentum when they reach the ground will be?
Asked by adityaahuja099
29th December 2017
3:43 PM
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ICSE IX Physics
Selina Publishers : Concise Physics : Class IX : Chapter 2 : Exercise 2(B) : Question number 3 : part 1 :----- Why is 6m being subtracted from 18m ?
Asked by Lynet_Melinda
13th January 2018
12:40 PM
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CBSE XII Science Physics
A stone falls freely under gravity .it covers distance h1,h2,h3 in the first 5s ,the next 5s and the next 5s respectivpy . The relatn between h1,h2,h3 is
Asked by srivastavsanjana6
31st January 2018
12:18 AM
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NEET1 NEET1 Physics
Explain min distance and time approach in crossing a river with diagram
Asked by ashutosh25807
1st February 2018
11:59 AM
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ICSE IX Physics
how much distance will a body of 500g move in 10 seconds when a force of 0.1 N is applied
Asked by Shamz
15th February 2018
11:33 PM
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ICSE XI Science
Question - 2 : A ball falls freely on a perfectly elastic plate from a height of 3.0 m. At the instant t = 0 , the velocity of the ball is zero. Draw time - velocity graph for the motion of the ball. Label the axes and show the mathematical calculations required. ( g = 9.8 m/s^2 ).
Asked by sudhanshubhushanroy
25th February 2018
4:17 PM
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ICSE X Physics
1)A body starts from rest.what is the ratio of the distance traveled by the body during the 4th and 3rd second. 2)A person is standing in an elevator.In which case he finds his weight less than actual a)the lift moves up with constant acceleration b)the lift moves down with constant acceleration c)the lift moves up with uniform velocity d)the lift moves down with constant velocity Plz urgent
Asked by Sunita
27th February 2018
10:11 PM
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CBSE IX Physics
Answer 19 with explanation
Asked by md775016
2nd March 2018
10:02 PM
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JEE Plances JEE (Main) Physics
two cars, P and Q start side by side from rest at the same instant and in the same direction. P accelerates uniformly at 4 metre per sec square for 10 sec and then moves with uniform velocity. Q moves with uniform acceleration of 3 metre per sec square. find the distance between them 30 seconds after start. which one is ahead and why?
Asked by shreeyarokade
1st April 2018
11:05 AM
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JEE Plances JEE (Main) Physics
a car A travelling along a straight level road with a uniform speed of 60 km/hr. it is followed by another car B which is travelling uniformly at 70 km/hr. when the distance between them is 2.5km, the car b decelerates at 20 km/hr sq. where will B catch up with A?
Asked by shreeyarokade
1st April 2018
12:40 PM
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ICSE IX Physics
A body thrown vertically upward with velocity u .what will be the greatest height H to which it will rise
Asked by Kanwaranita10
7th April 2018
12:01 PM
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ICSE IX Physics
For A body moving from rest and moving with uniform acceleration the ratio of distance covered for 1 second ,2 second, 3 second is ?
Asked by Kanwaranita10
7th April 2018
12:02 PM
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ICSE IX Physics
A ball is gently dropped from a height of 15 m. If its velocity increases uniformly at the rate of 10 M per second square velocity with which it will strike the ground is.
Asked by Kanwaranita10
7th April 2018
12:03 PM
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ICSE IX Physics
A body moving from rest with uniform acceleration Travels a distance x in first t seconds and travels a distance Y with same acceleration in next 2 seconds find the value of Y
Asked by Kanwaranita10
7th April 2018
12:07 PM
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CBSE IX Physics
Please reply with solution
Asked by meghnananavati
16th April 2018
6:05 PM
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CBSE X Physics
If a freely falling body travels in the last second a distance equal to the distance travelled by it in first 3 seconds, then find the time of its travel.( in seconds)
Asked by acv27joy
21st April 2018
7:15 PM
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JEE Plances JEE (Main) Physics
Solve the following
Asked by venkat
21st April 2018
11:44 PM
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JEE Plances JEE (Main) Physics
Which option is correct? Sir I want detailed explanation
Asked by venkat
23rd April 2018
4:51 PM
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JEE Plances JEE (Main) Physics
Question is in picture kindly solve it
Asked by sakshisingh3124
1st May 2018
11:27 AM
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JEE Plances JEE (Main) Physics
Solve it
Asked by sakshisingh3124
1st May 2018
1:34 PM
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CBSE XI Science Physics
two balls a and b are released from rest from the roof of a building at t=0 and t=2s respectively.the ball a strikes the ground and rebounds back with the same speed.after some time both balls a and meet each other at a height of 55m from the ground.the height of the building is
Asked by Prasanna
7th May 2018
9:17 AM
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NEET1 NEET1 Physics
A partial start from rest and has an acceleration of 2m/s^2 for 10s. After that ,it travels for 30s with constant speed and then undergoes a retardation of 4 km/s^2 and comes back to rest. The total distance covered by the particle is 1)650m 2)750m 3)700m. 4) 800m
Asked by Kajalmandal64
11th May 2018
2:47 PM
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NEET1 NEET1 Physics
A ball is droped from a high rise platform t=0 starting from rest. After 6s another ball is thrown downwards from the same platform with a speed v . The two ball meet at t=18s . What is the value of v ? 1)74m/s 2)64m/s . 3)84m/s. 4)94m/s
Asked by Kajalmandal64
11th May 2018
2:53 PM
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CBSE X Physics
A stone is dropped into a well and the sound of the splash is heard after 25/8 seconds later. If the velocity of sound in the air is 352.8 m/s,find the depth of the well.(g = 9.8 m/s^2)
Asked by acv27joy
12th May 2018
7:35 PM
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CBSE X Physics
A,B,C and D are points in a vertical line such that AB =BC=CD. If a body falls freely through A, prove that the time of descent through AB,BC and CD are in ratio 1:root2-1:root3 - root2. Give ans quickly in proper steps
Asked by acv27joy
12th May 2018
7:39 PM
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CBSE X Physics
A body is dropped from a certain heigh H. If the ratio of distance travelled by it in (n-3)seconds to (n-3)nd secondsecond is 4:3, find H.(g = 10 m/s^2)
Asked by acv27joy
12th May 2018
8:18 PM
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CBSE X Physics
A car is moving at a certain speed stops on applying within 16 m. If the speed of car is doubled, maintaining the same retardation, then at what distance does it stops? Also calculate the percentage change in distance.
Asked by acv27joy
12th May 2018
8:26 PM
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JEE Plances JEE (Main) Physics
how can i solve this numerical?
Asked by pukai7229
16th May 2018
9:28 AM
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JEE Plances JEE (Main) Physics
can someone please help me with?
Asked by pukai7229
16th May 2018
9:30 AM
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JEE Plances JEE (Main) Physics
please do this sum for me!!
Asked by pukai7229
16th May 2018
9:33 AM
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JEE Plances JEE (Main) Physics
how do I do this numerical?
Asked by pukai7229
18th May 2018
1:24 PM
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CBSE X Physics
A all thrown upwards returns to the ground with the initial speed of u. The ball is at the height of 80 m at two times the time interval being 6 seconds. Find u, by assuming g=10m/s^2. (Please explain with diagram)
Asked by acv27joy
19th May 2018
7:03 PM
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ICSE IX Physics
A train starts from rest and accelerates uniformly at a rate of 2 m/s2 for 10 seconds.It then maintains a constant velocity for 40s.On applying brakes, a train is uniformly retarded and stops in 20s.Calculate : (1) maximum velocity reached (2) retardation in last 20 secs (3) total distance travelled (4) average velocity of the train?
Asked by nishola82
22nd May 2018
11:39 PM
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ICSE IX Physics
A truck running at 72 km/h is brought to rest over a distance of 25 m.Calculate the retardation and time for which brakes are applied ?
Asked by nishola82
22nd May 2018
11:44 PM
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CBSE IX Physics
A motorbikie running at 90 km/h is slowed down to 50 km/h by application of brakes over a distance of 40m.If the brakes are applied with the same force.Calculate : (1) total time in which bike comes to rest ? (2) total distance covered by the bike ?
Asked by nishasaumitya
22nd May 2018
11:56 PM
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CBSE IX Physics
A space ship travelling in space at 200 km/s, fires its engine for 10 s, such that its final velocity is 600 km/s.Calculate the total distance travelled by the spaceship in 30s starting from the time of firing ?
Asked by nishasaumitya
23rd May 2018
12:02 AM
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CBSE IX Physics
A body moving with uniform acceleration travels 24m in 6th second and 44 m in 11th second.Find the :(1) acceleration (2) initial velocity of the body ?
Asked by nishasaumitya
23rd May 2018
12:06 AM
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ICSE IX Physics
A cyclist driving at 36 km/h stops in 2s by the application of brakes.Calculate : (1) retardation (2) distance covered during application of brakes ?
Asked by Vikas
23rd May 2018
12:20 AM
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ICSE IX Physics
A train is moving with a velocity of 90 km/h when the brakes are applied.The retardation produced is 0.5 m/s2.Find: (1) velocity after 10 s ? (2) time taken by train to come to rest ?
Asked by Vikas
23rd May 2018
12:24 AM
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CBSE X Physics
A car moving on a road with uniform accleration covers 20m in the first second and 30m in the next second. What is accleration?
Asked by acv27joy
26th May 2018
9:46 PM
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CBSE IX Physics
An object starts from rest and is uniformly accelerated so that its speed is 60 m/s after 20s. If it travels with this speed for 40 s and is then brought to rest by a uniform retardation in 30 s. Sketch the velocity-time graph and calculate the acceleration, the retardation and the total distance travelled.
Asked by sbajaj544
5th June 2018
11:34 AM
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NEET1 NEET1 Physics
A bike and a car start from rest at the same place at the same time in the same direction. The bike accelerates uniformly at 1m/s^2 upto a speed 10m/s and the car at 0.5 m/s^2 upto speed of 15m/s. At what time the car overtakes the bike?
Asked by Heraumna176
5th June 2018
8:07 PM
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CBSE IX Physics
Draw the velocity time graph to show the train started from rest velocity, then move with uniform velocity for same time and then retard .
Asked by Chaudharydheeraj130
8th June 2018
11:01 AM
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CBSE IX Physics
A child drop a ball from a window, the ball strike the ground in 3 s. what is the velocity of the ball before it hit the ground
Asked by Nimmi
9th June 2018
3:14 PM
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CBSE XI Science Physics
If 't' is the time of ascent , find the depth of shaft in question 37:-
Asked by arunavamitra50
16th June 2018
5:27 PM
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CBSE XI Science Physics
An object is dropped from rest . It's velocity versus time graph will be ? ( Assume downward to be positive)
Asked by arunavamitra50
16th June 2018
5:30 PM
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CBSE XI Science Physics
What will be the answer of question 27 ?
Asked by arunavamitra50
16th June 2018
6:08 PM
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CBSE XI Science Physics
What would be the answer of question 18 ?
Asked by arunavamitra50
16th June 2018
6:09 PM
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CBSE IX Physics
A motorcycle starts from rest and uniformly accelerates at 1m/s.Find the distance travelled in the 3rd second.
Asked by poojaramesh742
17th June 2018
1:15 PM
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CBSE XI Science Physics
Please answer question number 27 .
Asked by arunavamitra50
19th June 2018
1:31 PM
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CBSE XI Science Physics
The particle is moving on a straight line path with initial velocity 45m/s and along +ve x-axis and acceleration of 10. along -ve x-axis. The distance travelled by the particle in 5th second of its motion is ?
Asked by arunavamitra50
21st June 2018
7:05 AM
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CBSE IX Physics
A ball is dropped from a height of 49m. Find the time interval in which the ball hits the ground (g=9.8/s square)
Asked by adItTYAGuPtaiLt
21st June 2018
7:21 PM
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CBSE XI Science Physics
A ball is thrown vertically upwards with speed of 10m/s from the top of the tower 200m high and another is thrown vertically downwards with the same speed simultaneously.the time difference between them in reaching the ground in seconds(g=10m/s²)
Asked by Sachinkumarrayray7755
22nd June 2018
2:58 PM
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JEE Plances JEE (Main) Physics
how to do this numerical??
Asked by pukai7229
23rd June 2018
10:09 AM
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CBSE XI Science Physics
A body is thrown vertically upward with a definite velocity from different places on the earth. Prove that the time of return of the body at a place will be inversely proportional to the acceleration of gravity at that place.
Asked by bdroy_2014
27th June 2018
10:00 PM
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ICSE X Physics
A car of mass 1000 kg accelerates from rest to 100 km per hour in 8 seconds what is the acceleration and the accelerating force developed by car engine
Asked by Samrat
29th June 2018
9:53 PM
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CBSE XI Science Physics
A body starts from rest and moves with constant acceleration for t seconds.It travels a distance X1 in first half of time and X2 in second half of time.Then which one is correct? 1) X2=X1 2)X2=2X1 3)X2=3X1 4)X2=4X1
Asked by tps.mjmdr
1st July 2018
11:06 PM
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CBSE XI Science Physics
A body moving with uniform acceleration travels a distance of 24m and 64m rurind the first two equal consecutive intervals of time each of duration 4 second. Determine the initial velocity and acceleration of moving body.
Asked by tps.mjmdr
6th July 2018
9:09 PM
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CBSE XI Science Physics
A stone A is dropped from the top of a tower 20 m high. simultaneously another stone B is thrown up from the bottom of this tower so that it can can reach just the top of the tower what is the distances of the stone from ground while they pass each other.
Asked by tps.mjmdr
9th July 2018
5:28 PM
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CBSE XI Science Physics
A bus starts moving with an acceleration of 2m/s^2 a cyclist 96 M behind the bus starts moving simultaneously towards the bus at 20 m/s.After what time will he be able to overtake the bus.
Asked by tps.mjmdr
9th July 2018
5:30 PM
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CBSE XI Science Physics
A body covers 12 metre in 2nd and 4th second.Find what distance the body will cover in 4 seconds after 5th second.
Asked by tps.mjmdr
9th July 2018
5:34 PM
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CBSE XI Science Physics
Two motor cars start off with a gap of 2 min with the same acceleration how long after the departute of the second car does travel a distance equal to 1/9th of the distance covered by the first car.
Asked by contactpasala
9th July 2018
8:23 PM
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JEE Plances JEE (Main) Physics
A police chase a thief with a velocity uniform velocity 'v'. When the jeep was at a distance 'd' from a thief then the thief fled from the rest with an acceleration 'a'. so prove that the police caught the thief if v>=root over 2ad.
Asked by mugembosapta
12th July 2018
11:43 PM
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CBSE XI Science Physics
Car starting from rest accelerates at the rate f through a distance of s and continues at a constant speed for time t and decelerates @ f/2 to come to rest. If the total distance travelled is 5s then prove that s=0.5 ft square.
Asked by tps.mjmdr
13th July 2018
7:37 AM
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JEE Plances JEE (Main) Physics
a body covers a distance of 4m in 3rd and 12m in 5th sec if the motion is uniformely accelerated how far will it travels in the next 3sec
Asked by gargpuneet989
17th July 2018
5:12 PM
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JEE Plances JEE (Main) Physics
A ball is dropped from a balloon going up at a speed of 7 m/s. If the balloon was at a height 60 m at the time of dropping the ball, how long will the ball take in reaching the ground
Asked by gargpuneet989
19th July 2018
2:50 PM
Answered by Expert
JEE Plances JEE (Main) Physics Motion in a Straight Line
A ball is dropped from a balloon going up at a speed of 7m/s. If the balloon was at a height 60 m at the time of dropping the ball, how long will the ball take in reaching the ground ?
Asked by Yash
20th July 2018
12:46 AM
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CBSE XII Science Physics
a solid ball of density half of that of water falls freely under the action of gravity from a height of 19.6 and then water enters into tje water upto depth of？
Asked by sbtech357
22nd July 2018
9:32 AM
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CBSE XII Science Physics
when the ball is released from height 5m it rebounds to the height of 3m. with whate velocity it should be dropped so that it rebounds its height
Asked by sbtech357
23rd July 2018
10:28 AM
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CBSE XI Science Physics
A stone is dropped from a certain height which can reach the ground in 5s. It is stopped momentarily after 3s of its fall and then it is again released. The total time taken by the stone to reach the ground will be A. 6s B. 6.5s C. 7s D. 7.5s
Asked by shyamalimaborthakur89498
4th August 2018
8:50 PM
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CBSE XI Science Physics
A ball is dropped from a height of 20m and rebounds with a velocity which is 3/4 of the velocity with which it hits the ground. What is the time interval the first and second bounces ( g = 10m/s^2)
Asked by shyamalimaborthakur89498
5th August 2018
12:34 PM
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Maharashtra X Physics
A stone thrown vertically upwards with initial velocity u reaches a height 'h' before coming down. Show that the time taken to go up is same as the time taken to come down.
Asked by akshaywbr
17th August 2018
4:15 PM
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NEET1 NEET1 Physics
a particle starts from rest and travels a distance s with uniform acceleration,then it travels a distance 2s with uniform speed,finally it travels a distance 3s with uniform retardation and comes to rest.if the complete motion of the particle is a straight line then the ratio of its average velocity to maximum velocity is
Asked by 443879616104558
21st August 2018
10:25 AM
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NEET1 NEET1 Physics
a ball is vertically upward from the ground and a student gazing out of the window sees it moving upward past him at 10 m/s.the window is at 15 m above the ground.the velocity of the ball 3s after it was projected from the ground is
Asked by 443879616104558
22nd August 2018
10:47 AM
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NEET1 NEET1 Physics
a train is approaching a platform with a speed of 10 km/hr.when it is at a distance of 2 km from the platform breaks are applied so that a uniform retardation is produced. at the same time ,a bird sitting on the pole near the platfiorm flies with the speed of 50 km/hr towards the train touches the front of the train and then returns to the pole.if the motion is repeated until the train comes to rast,the total distance travelled by the bird is?
Asked by 443879616104558
22nd August 2018
4:06 PM
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CBSE XI Science Physics
A motorcyclist moving with a uniform retardation takes 10s and 20s to travel successive quarter kilometre.How much further he will travel before coming to rest?
Asked by dineshchem108
23rd August 2018
10:28 PM
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NEET1 NEET1 Physics
Two ships A and B are 10 km apart on north south. If A ship is due north of B,A travels towards east with velocity 5km/hr. ShipB travels due north with speed 5km/hr. Find the shortest distance between them
Asked by valavanvino1011
26th August 2018
6:12 AM
Answered by Expert
CBSE XI Science Physics Motion in a Straight Line
The 2 ends of train ,moving with a constant acceleration,pass a certain with velocity u and v .Show that velocity with which the middle point of train passes the same point is root of(usquare +v square)/2
Asked by ajaysekharjs
27th August 2018
11:54 AM
Answered by Expert
CBSE IX Physics
A ball is thrown upward with an initial velocity such that it reaches the maximum height of 15m if at the same instant a stone is dropped from the height of 15m find the ratio of their distances travelled when they cross each other
Asked by 418222535371723
27th August 2018
9:50 PM
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CBSE IX Physics
A ball is thrown vertically upwards with a velocity of 49m/s calculate maximum hieght and time taken
Asked by aadhithya.chitti
29th August 2018
6:01 PM
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NEET1 NEET1 Physics
A man can swim directly a stream of width 100m in 4 minutes, when there in no current of water and in 5minutes when there is current of water. The velocity of the current of water in that stream is
Asked by valavanvino1011
31st August 2018
7:00 AM
Answered by Expert
CBSE IX Physics
Accelaration of a car in a motion is 1.5m/s2 . How much is the increase in a velocity in 4s
Asked by sreekumar1974
3rd September 2018
7:44 PM
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JEE Plances JEE (Main) Physics
A body is dropped from a building of height 1500 m. After two seconds another body is dropped from the same point. How long after the first body falls will the two bodies be 120 m apart
Asked by abhijithroshan24
8th September 2018
9:24 PM
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NEET1 NEET1 Physics
give me the expression for ut=1/2at square in physics
Asked by thejuraj2002
18th September 2018
10:37 PM
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CBSE X Physics
The engineer of a train moving at a speed v1 sights a good train at a distance d ahead of him on the same track moving in the same direction with speed v2. He puts the brakes and gives his train a constant retardation a. There will be no collision if:- a) d ≥ [(v1 - v2)^2]÷2a b) d ≤ [(v1- v2)^2]÷2a c) d = [(v1 - v2)^2]÷2a d) d > [(v1 - v2)^2] ÷2a
Asked by acv27joy
22nd September 2018
2:13 PM
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JEE Plances JEE (Main) Physics
A body of mass 2kg is projected upward from the surface of the ground at t=0 with a velocity of 20m/s .One second later a body B ,also of mass 2kg is dropped from a height of 20m .If they collide elastically then velocities just after collision are
Asked by m.nilu
22nd September 2018
2:29 PM
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CBSE IX Physics
A Particle moving with initial velocity of 15 m/s is subjected to a uniform acceleration of -5m/s2. Find the displacement in the next 3 secs.
Asked by bcnandi
23rd September 2018
12:29 PM
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CBSE IX Physics
A Car travelling at 22.4m/s skids to stop in 2.55 sec.Determine the skidding distance of the car.(Assume uniform acceleration).
Asked by bcnandi
23rd September 2018
1:19 PM
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CBSE XI Science Physics
Question 2, 3, 4
Asked by Sritam.sen.09
27th September 2018
10:42 PM
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ICSE IX Physics
solve the following numericals 1. A person is listening to a tone of 5 kilohertz at a distance of 450 m from the source of sound find the time interval between successive compressions from the source of sound. 2. A ball is thrown up vertically and IT returns to the thrower after 12 seconds calculate the velocity with which it is thrown up. g is equal to 9.8 metre per second square 3. A ball is thrown upward with a velocity of 49 M per second calculate the total time it needs to return
Asked by bsap6777
29th September 2018
11:46 AM
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ICSE VII Physics Motion
A car travels with speed 30km /h for 30mins .and then with speed 40km/h for one hour find the total distance traveled by the car
Asked by qudsia988020
3rd October 2018
9:00 PM
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CBSE XI Science Physics
A lift coming down with a downward acceleration of 2m/s^2 . A boy standing in the lift throws a stone vertically upwards with speed of 5m/s with respect to himself. The time after which he will catch the stone is?
Asked by arunavamitra50
12th October 2018
12:57 PM
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NEET1 NEET1 Physics
Initially car x is 4 m ahead of car y. Both start moving at t 0 in same direction along straight line. The velocity-time graph of two cars is shown in figure. The time when car y will catch the car x will be
Asked by rupambhowmikk
3rd November 2018
12:04 AM
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CBSE IX Physics
A cricket ball is dropped from a height of 20 m. Calculate : (I) speed of ball when it hits the ground (2)time it takes to fall through this height (g=10m/s2)
Asked by nisha_vini29
3rd November 2018
1:04 PM
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CBSE IX Physics
A stone dropped from roof of the building takes 4s to reach the ground.Calculate the height of the building?
Asked by nisha_vini29
3rd November 2018
1:13 PM
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CBSE IX Physics
A ball is thrown with a speed of 0.5m/s.(I) how high will it go before it begins to fall? (2)how long will it take to reach that height ?
Asked by Vikas
3rd November 2018
1:26 PM
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CBSE IX Physics
A ball of mass 50gm is thrown upwards. It rise to a height of 100m. At what height kinetic energy is reduced to 70percent?
Asked by ravinecw
21st November 2018
10:32 AM
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JEE Main Physics
A particle is projected vertically upwards with a velocity u, from a point O. When it returns to the point of projection, which of the following is incorrect ? AIts average velocity is zero BIts displacement is zero CIts average speed is u DIts average speed is u/2
Asked by jyothi.nookarapu
18th December 2018
9:40 PM
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JEE Main Physics
Sir pls solve the following.
Asked by rsudipto
22nd December 2018
8:09 PM
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CBSE VIII Science
the water drop falls at regular intervals from a tap 9m above the ground. the fourth drop is leaving the tap at the instant the first drop touches the ground. how high is that third drop at that instant?
Asked by aryang9020
17th January 2019
5:41 PM
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CBSE IX Physics
A bus starts to move with acceleration 1m/square. A man who is 48m behind the bus runs to catch it with constant velocity 10m/s.In how much time he will catch the bus.
Asked by arunkumarsingh3055
30th January 2019
10:43 PM
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CBSE IX Physics
A motor board in loktak lake starting from rest,accelerates along a straight path at a uniform rate of2.0ms(power -2) For 10.0s.How far does the boat travel during this time?
Asked by hegowkipgen77
14th February 2019
12:21 AM
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ICSE X Physics Laws of Motion
equations of motion
Asked by manashbst6543
28th February 2019
4:44 PM
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CBSE XI Science Physics
How to solve this problem?
Asked by dineshchem108
1st March 2019
10:36 PM
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ICSE IX Physics
a car travels witha uniform velocity of 25 ms-1 for 5s. the brakes are then applied and the car is uniformly retarded nd comes to rest in further 10s. find (1) retadation (2) distance before applying brakes (3) distance after applying brakes
Asked by rashmibhattacharjee52
6th April 2019
3:33 PM
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NEET NEET Physics
While solving problems, when do we take positive g? During body's upward and downward motion, what terms shoud we take as positive and negative?
Asked by 22bakugoku
18th April 2019
5:48 PM
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CBSE XI Science Physics
A cricketer can throw a ball to a maximum horizontal distance of 100m. How much high above the ground can the cricketer throw the same ball?
Asked by patilgiridhar333
25th April 2019
8:13 PM
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CBSE XI Science Physics
The displacement x of a particle varies with time t as x=4t²-15t+25. Find the position, velocity and acceleration of a particle become zero? Can we call the motion of the particle as one with uniform acceleration?
Asked by mr.perfect420
19th May 2019
8:53 AM
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CBSE XI Science Physics Motion in a Straight Line
What is motion?
Asked by JITESHRAJ11
27th May 2019
9:40 AM
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CBSE VII Science Motion and Time
what is motion?
Asked by ak1429307
30th May 2019
7:19 PM
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CBSE XI Science Physics
Points a and b are separated by 1 km a started moving towards b with a constant acceleration of5 m/s^2 while b starts moving away from a. With a constant speed of 1 m/s find -1. At what point will they meet 2. After what time will they meet 3. What is the velocity of AandB when they meet
Asked by aarushsingh3117
5th June 2019
8:41 AM
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CBSE XI Science Physics
what is the graph of the equation s=ut+1/2at^2
Asked by anjalisharmagdps
5th June 2019
9:33 PM
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CBSE XI Science Physics
A ball is dropped from a building 100m high at the same instance a ball is thrown vertically upwards from the base of the building with what velocity should this ball be thrown so that the two balls collide at a height of. 50 m
Asked by aarushsingh3117
6th June 2019
8:31 AM
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CBSE IX Physics
A driver of a car travelling at 52km/h applies the brakes and accelerates uniformly in the opposite direction. The car stops in 5s. Another driver going at 3km/h in another car applies his brakes slowly and stops in 10s. On the same graph paper , plot the speed versus time graphs for the two cars. Which of the two cars travelled farther after the brakes were applied?
Asked by Santosh.kumar0317
11th June 2019
1:05 PM
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CBSE IX Physics Motion
A body is dropped from a height of 49m. Find the time taken by to reach the ground?
Asked by Sameergandass2407
12th June 2019
10:27 AM
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JEE Main Physics
A body is thrown vertically upwards from ground with a velocity u. It passes a point at a height h above the ground at time t1 while going up and at a time t2 while falling down. (t1 and t2 are measured from the instant of projecting body upwards). Then the relation between u, t1 and t2 and is:- (A) t1 + t2 = 2u/g (B) t2 - t1 = 2u/g (C) t1 + t2 = u/g (D) t2 - t1 = u/g
Asked by Kkrishna
18th June 2019
1:47 PM
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JEE Main Physics Kinematics
A particle is starting from rest and moving with constant acceleration find the ratio of distance covered in the 1st 2nd and 3rd second
Asked by Rohitparmar2332
25th June 2019
8:46 AM
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CBSE XI Science Physics
Derive an expression for displacement in the last or nth second
Asked by Paitboy23
26th June 2019
5:44 AM
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CBSE IX Physics
A stone is thrown vertically upward with a speed of 10 m/s. How high dose the stone rise before returning back to the Earth? Given acceleration due to Earth's attraction, g=9.8m/s2
Asked by prakash.sanyasi
4th July 2019
2:50 PM
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CBSE XII Science Physics
a body is dropped from a certain height such that the distance travelled in last second is equal to the distancetravelled in first three second.find its height
Asked by ritukkr4444
4th July 2019
7:06 PM
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CBSE IX Physics
A body starts to move from its state of rest under uniform acceleration and moves for 10 second with average velocity of 30 metre per second. Find the final velocity at the end of 10 seconds and also find the total distance travelled in 10 seconds
Asked by naqvireshma21
6th July 2019
7:46 PM
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NEET NEET Physics
A body is projected vertically up at t=0 with a velocity of 98m/sec. Another body is projected from the same point with the same velocity after time 4 sec. Both bodies will meet after :
Asked by Prashant DIGHE
13th July 2019
10:14 AM
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CBSE XI Science Physics
A particle accelerates from rest at a constant rate for some time and attains a velocity of 8m/s.afterwards it decelrates with the constant rate and comes to rest .If the total time taken is 4 S, the distance travlled is
Asked by simashreegogoi014
25th July 2019
5:10 PM
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ICSE XI Science Physics
A car accelerates uniformly on a straight road from rest to speed of 180km h-1 in 25 s. Find the distance covered by the car in this time-interval.
Asked by Sunitav2019
25th July 2019
8:08 PM
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ICSE IX Physics
A particle moves the distance of 20 m in 5th second and distance of 8 m in 7th second of its motion .What is total distance moved by the particle ? Its answer is 188 m please tell me how?
Asked by ayushmani1871
26th July 2019
11:05 PM
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ICSE IX Physics
A bullet fired with speed 100 ms-1 travels 500 m in air.Assuming the air fmingmriction to be constant,calculate the retardation prodced by the air.and how much velocity of bullet after 1.2 s of motion?
Its velocity is coming 488 
Please tell me how it come
Asked by ayushmani1871
27th July 2019
12:17 PM
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NEET NEET Physics
A ball is dropped from certain height such that distance traveled in last second = distance travelled in first 3 second find its height
Asked by Navjot0315
28th July 2019
12:42 PM
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JEE Main Physics
A ball is thrown vertically upwards with the speed of 9.6m/s from the top of a tower returns to the earth in 6 secs. Find height of the tower.
Asked by Rajesjkumar16025
2nd August 2019
8:18 AM
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CBSE XI Science Physics
A body with uniform acceleration covers 76 m in 5th second and 116 m in 10th second. (a)Find the distance traveled in 15th second. (b) What is the distance traveled in next 5 seconds?
Asked by Mãnï kåûr
2nd August 2019
5:09 PM
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CBSE XI Science Physics
A police man is moving with constant speed on a straight road. When he is at a distance 250m behind a car, the car starts accelerating from rest and move with a constant acceleration 2m/s2. The minimum speed of the police man such that he can catch the car is
Asked by ragunive
9th August 2019
8:37 AM
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CBSE XI Science Physics
A stone is thrown vertically upwards with a velocity of 4.9 m/s. Calculate a) the maximum height reached. b) the time taken to reach the maximum height. c) the velocity with which it returns to the ground and d) the time taken to reach the ground. Solutions: a) 1.225m b)0.5s c)4.9 m/s d)1s
Asked by kkdmmdsd
12th August 2019
7:51 AM
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CBSE XI Science Physics
Height of the tower?
Asked by samratpaudel5
13th August 2019
7:29 PM
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CBSE XI Science Physics
A particle a is projected up from ground with velocity u, after t second, particle b is projected vertically upwards from ground with the same velocity u, find in which time they will meet each other?
Asked by malaysaha.80
31st August 2019
7:38 PM
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CBSE XI Science Physics
A particle is projected vertically upwards from the ground with velocity U it reaches at maximum height in time T1 after that it returns back to the ground with velocity v in time T2 if a resistance is considered then find the correct relation between T1 and t2 and correct relation between U and v?
Asked by malaysaha.80
1st September 2019
10:23 AM
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CBSE XI Science Physics
if a stone is dropped from the top of a tower 200 metre height and at the same time another stone thrown upwards with a velocity of 40 m per second when and where the two stone will meet?
Asked by p.spunia79
15th September 2019
12:47 PM
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CBSE XI Science Physics
explain all the derivations of chapter-motion in a straight line
Asked by ABHILASHA
16th September 2019
6:57 PM
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CBSE VI Science
Which of the following shows no change in direction of the moving body? a) Curvillinear motion b)Oscillatory motion c) Rectillinear motion d) Revolution
Asked by c_aneal
22nd September 2019
10:25 PM
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JEE Main Physics
A particle is projected vertically upward with velocity 20m/s at the same instant another particle B is dropped from a tower of height 100m time at which B meet with A. ans is not 5sec
Asked by ashutosharnold1998
17th October 2019
1:19 PM
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CBSE IX Physics Motion
a car moving at certain speed stops on applying brakes with in 16 m.if the speed of the car is doubled,maintaining the same retardation.then at what distance does it stop?Also calculate the percentage change in this distance.
Asked by bairava6324
19th December 2019
5:52 PM
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JEE Main Physics
Find height of jet of water?
Asked by ashutosharnold1998
22nd December 2019
5:53 PM
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NEET NEET Physics
please answer this
Asked by Prashant DIGHE
29th January 2020
10:20 PM
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CBSE XI Science Physics Work, Energy and Power
prove that in an elastic one dimensional collision between two bodies, the relative velocity of approach before collision is equal to the relative velocity of seperation after the collision. Hence derive expressions for the velocities of two bodies in terms of their initial velocities before collision.
Asked by shafiaagha999
27th February 2020
11:40 PM
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Maharashtra IX Physics
What is motion
Asked by udaydhende7
16th May 2020
10:13 PM
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ICSE IX Science
Can you suggest the real life examples about the motion of a body from the velocity- time graphs?
Asked by shashikantbbatra
29th June 2020
9:40 AM
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CBSE XI Science Physics
A stone is thrown upwards with a speed 'u' from the top of the tower reaches the ground with a velocity '3u'.The height of the tower is?
Asked by twishaobroy
8th August 2020
3:50 PM
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NEET NEET Physics
a rock is thrown straight up with twice the initial the velocity of another. how much higher will the first rock be at its apex?
Asked by meghanaprabhu1612
22nd October 2020
7:56 PM
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CBSE IX Physics
A car of mass 1000 kg is moving with a certain speed when a constant braking force of 1000 N acts on it for 5 seconds and the speed of the car reduces to half its original speed. Find the further time required to stop the car if the same braking force acts.
Asked by rachitraj152007
3rd January 2021
7:10 PM
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CBSE IX Physics Motion
A stone is thrown vertically upward after how much time it will be at height of 5m
Asked by bhoirhimnshu2326
26th June 2021
6:08 AM
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CBSE VI Science Motion and Measurement of Distances
what is motion
Asked by bapimondaladpc
10th July 2021
10:56 AM
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CBSE IX Physics Motion
What is motion
Asked by abhinavpatna946
4th August 2021
7:57 AM
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ICSE IX Physics Motion in One Dimension
plz solve urgently dear experts :
Asked by savitamahajan202
9th July 2022
12:47 PM
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CBSE IX Science Motion
Assertion: Velocity of an object thrown vertically upwards decreases till it reaches the highest point. Reason: Acceleration due to gravity retards the motion of an object. what will be the answer ??
Asked by manaskumarbiswasbrb
14th March 2023
12:27 PM
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