CBSE XI Science Physics Laws of Motion
when we apply brakes in the car,it retards the motion;although it is an internal force.why?
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26th February 2008
6:05 PM
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ICSE X Physics Electrical Power and Household Circuits
A car running at a speed of 72 km/hr is slowed down to 18 km/hr over a distance of 40 m.Calculate :(1) the retardation produced by the brakes.(2)time for which brakes are applied?
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3rd July 2017
12:24 PM
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NEET1 ALL Class Kinematics
please explain
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16th December 2017
6:39 AM
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CBSE IX Physics
a cyclist is moving at a uniform speed of 20 m/s for 30 s.He then stops pedalling and stops in next 10 s.Calculate : (1) average retardation ? (2) total distance travelled ?
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22nd May 2018
11:16 PM
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CBSE IX Physics
A bullet fired with a speed of 50m/s is stopped by a depth of 10 cm by a wall.What is the retardation offered by wall ?
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22nd May 2018
11:30 PM
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CBSE IX Physics
Difference between retardation and acceleration on points.
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20th June 2018
3:57 PM
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CBSE XI Science Physics
The relation between distance 'x' and time 't' is t = A(x^2) + Bx , where A and B are constants . The retardation is ?
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21st June 2018
6:57 AM
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ICSE X Physics
a bullet of mass 10 g travels with speed 500 m/s on striking a wooden target it penetrates 0.5 m inside calculate kinetic energy and resistive force
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28th June 2018
11:41 AM
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ICSE X Physics
A ball of mass 100 gram moving with a velocity of 20 m per second is brought to rest in 0.02 second find the average retarding force acting on the ball
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29th June 2018
10:11 PM
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JEE Plances JEE (Main) Physics
a motar car starts from rest and accelerate uniformly for 10s to a velocity of 30m/s it then runs at a constant speed and it is finally brought to rest in 80m in constant retardation total distane covered is 830m find the value of acceleration ,retardation,total time taken
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7th July 2018
6:26 PM
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JEE Plances JEE (Main) Physics
A pt moves in a straight line under the retardation -kv where k is a constant.If the initial velocity is u,the distance covered in t sec is
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20th July 2018
9:52 PM
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CBSE IX Physics
When we are asked to find retardation and we put the formula of acceleration if the value is in (-)form then retardation will be in (-) form or (+) form??
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21st April 2019
3:42 PM
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JEE Main Physics
A bullet looses of its velocity passing through one plank. The number of such planks that are required to stop the bullet can be : a) b) c) Infinite d) Hide
Asked by Ranjeetgupta26068
17th May 2019
3:29 PM
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JEE Main Physics Laws of Motion
Sir plz make me understand all the concepts being applied here
Asked by vishakhachandan026
30th May 2019
10:15 AM
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JEE Main Physics
A rifle bullet loses 1/20th of its velocity in passing through a plank.find how many such uniform planks it would pass through before coming to rest assuming resistance to the plank to be uniform
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6th June 2019
11:37 PM
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ICSE IX Physics Motion in One Dimension
Could u pls solve this solve this doubt urgently? Thank you!
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5th August 2019
2:56 PM
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CBSE IX Physics Force and Laws of Motion
a car of mass 800g is travelling with a velocity of 20m/s . when the brakes are applied. it stops after travelling a distance of 8m.find the retarding force and retardation
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24th September 2019
11:19 AM
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CBSE IX Physics Motion
a car moves linearly with uniform retardation. If the car covers 40m in the last 2 seconds of its motion, what is the velocity of the car at the beginning of the last seconds?
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22nd March 2020
6:40 PM
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CBSE XI Science Physics Motion in a Straight Line
a car moving with a velocity of 20m/s stopped in a distance of 40 m . if the same car is travelling at double the velocity the distance travelled by it for same retardation is?
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6th April 2020
5:27 PM
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CBSE IX Physics Motion
PHYSICS||KINENATICS||. que no.81
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14th April 2020
9:50 PM
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NEET NEET Physics
please answer this ?
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21st April 2020
10:51 PM
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ICSE IX Physics Motion in One Dimension
A train starts from rest and accelerates uniformly at A rate of 2ms-1 for 10-s.It then maintains A constant speed for 200 s. Tge brakes are then applied and the train is uniformly retarded and comes to rest in 50 s. Find (i) the maximum velocity reached(ii) the retardation in the last 50 s (iii) the total distance travelled, and (iv) the average velocity of the train.
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20th May 2021
9:34 PM
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NEET NEET Physics Kinematics
A car starting from rest. is accelerated up to a distance S at a rate. and moves at a constant speed till time t. And after that the retardation rate becomes constant. If the total distance covered by it is equal to 15S, then find the value of S in terms 2 of f and t.
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11th June 2021
5:19 PM
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ICSE IX Physics Motion in One Dimension
explain retardation in detail
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5th July 2021
9:26 PM
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CBSE IX Physics Motion
A boy travelling in a car at a speed of 108Km/h came to rest after applying breaks. Before coming to rest it covers 30m. It's acceleration is
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28th August 2021
3:06 PM
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CBSE IX Physics Motion
Starting from rest, an object is uniformly accelerated to a speed of 60m/s in 20s. The object travels with this speed for next 40s and is then brought to rest by a uniform retardation in the next 30s.Sketch velocity time graph and calculate the acceleration, retardation and the total distance travelled. Hint: acceleration =rate of change of velocity. distance covered =area under velocity-time graph .
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10th November 2021
9:16 AM
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CBSE IX Physics Motion
what is retardation
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2nd June 2022
5:04 AM
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CBSE IX Physics Motion
A car is traveling with a speed of 54 km/hr the driver applies the break and retards the car uniformly.the car is stopped in 5 seconds 1) The redardation of the car 2)Distance travelled before it is stopped after apply the break
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30th June 2022
2:44 PM
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ICSE IX Physics Motion in One Dimension
please give answer of this question
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12th July 2022
8:45 PM
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