CBSE IX Physics Motion

diffrence between speed and velocity

CBSE IX Physics Motion

difference between speed and velocity

CBSE IX Physics Motion

find the average veolcity

CBSE IX Physics Motion

A person being chased by a lion is running on a straight line towards his car

at a constant speed of 4m/s. The car is at a distance of d meters away from

the person. The lion is 26 m behind the person and running at a constant

speed of 6 m/s. The person reaches the car safely. What is the maximum

possible value of d?

ICSE IX Physics Motion in One Dimension

CBSE IX Physics Motion

(a) distance between delhi and agra is 200km. atrain travels thefirst 100km at the speed of 50km/h. how fast must the train travel next 100 km so as to average 70km/h for the whole joueney?

(b) ona 120 km track, a train travel the first 30 km at speed of 30 km/h how fast must the train travel the next 90km so as to average 60km/h for the entire tip?

CBSE XI Science Physics Motion in a Plane

A projectile is projected at an angle > 45 degree with an initial velocity u. The time t, at which its horizontal velocity will be equal to vertical velocity is_________.

CBSE XI Science Physics Motion in a Plane

1. Determine the horizontal velocity u with which a stone must be projected from point p of height h so that it may hit the inclined plane perpendicularly. Inclination is theta and inclined plane is kept just below point p at ground. Give the value in terms of g, h and cot theta.                                                                                                                                                                                                                                                                                             2. Point A moves uniformly with velocity v so that vector v is continually aimed at point B which in its turn moves rectilinearly with velocity u<v. Initially, u perpendicular to v and separation was l. How soon will the points converge.     Plz answer both the questions as I have exam tommorow.

CBSE XI Science Physics Motion in a Plane

answer these questions

CBSE IX Physics Motion

A bus is moving with a constant velocity 10m/s on a straight road. A scooterist wishes to overtake the bus in 100s. If the bus is at a distance pf 1km from the scooterist, then the velocity with which scooterist should chase the bus is?

CBSE IX Physics Motion

A ball is thrown vertically upwards with a given velocity 'u' such that it rises for T seconds(T>1), what is the distance travelled by the ball during the last one second of ascent (in metres)? (Acceleration due to gravity is g m/second square)

CBSE XI Science Physics Motion in a Plane

a stream 200m broad is running downward at the rate of 1 km/h .a swimmer who can swim at the rate of 2 km/h wishes to reach a point just opposite . along what line should he striker and how long will he taker is crossing ?

CBSE XI Science Physics Motion in a Plane

determine the direction and magnitude of the resultant of following velocities  inpressed on a particle;8m/s due south,12m/s due east ,3root2 m/s due north east.

 

CBSE IX Physics Force and Laws of Motion

A bullet of mass 'm' and velocity 'v' if fired onto a stationary block of mass 'M' and sticks to it. The final velocity is?

ICSE X Physics Work, Energy and Power

 

 

please solve this 

JEE Plances ALL Class Physics Motion in a Plane

sir/mam can you explain the step 3 i.e. how it came from the 2nd step that is 1=2y(dy/dx)+2(dy/dx)+0

ICSE IX Physics Propagation of Sound Waves

From the diagram calculate i) Velocity of P and Q 

ii) frequency of P when frequency of Q is 512 Hz

Assume that both waves are travellin in the same medium

ICSE IX Physics Motion in One Dimension

Difference between acceleration and velocity.

CBSE XII Science Physics

Kindly provide proper and complete solution with a plausible explanation.

CBSE IX Physics

Q no 37 in detail

CBSE IX Physics

Please reply with solution

JEE Plances JEE (Main) Physics

Solve the following

JEE Plances JEE (Main) Physics

. .

ICSE IX Physics Laws of Motion

what is momentum? give a relevant real world example.

NEET1 NEET1 Physics

A body has an initial velocity of 3m/s and has an acceleration of 1m/sec2 normal to the direction of the initial velocity. Then its velocity 4 seconds after the start is

CBSE XI Science Chemistry Structure of Atom

Please answer

JEE Plances JEE (Main) Physics

A car is moving on a straight road due north with a uniform speed of 50km/h when it turns left through 90 degree. If if the speed remains unchanged after turning, change in velocity of the car in the turning process is: A) decreases B) increases C) remains unchanged D) first decreases and then increases

CBSE X Physics

The accleration of a particle moving in a straight line varies with displacement as a =2s, velocity of a particle is zero at zero displacement. Find corresponding velocity-displacement equation.

CBSE XI Science Chemistry Structure of Atom

7?

CBSE IX Physics Motion

What is the speed of seconds hand of your watch whose radius is 1.5 cm

CBSE XI Science Physics

A particle in simple harmonic motion has a position defined by the function x(t) = (80 cm) sin [(20 s-1 )t]. a) Determine the velocity v as a function of time t. b) Determine the acceleration a as a function of time t

CBSE IX Physics

four car  A,B,C and D are moving on a levelled road. Their distance vs time graphs shown below: Which car has a greater velocity

CBSE XI Science Chemistry

instantaneous position of a partical at time t,is given by x=10+12t+8t square where x and t are in metre and second respectively find the (a) initial velocity of a partical  (b)velocity of a partical at t=3sec (c)instantaneious accerlation of partical (d)position of particalat t=5sec

NEET1 NEET1 Physics

A plane is revolving around the earth with speed of 100km/hr at a constant height from the surface of earth. The change in the velocity as it travels half-circle is: ans is 200km/hr. Please provide me solution for it .

CBSE XI Science Physics

Q no.53

JEE Plances JEE (Main) Physics

if a=2x; initally particle is at x=2m and is moving with 3m/s then find out v at x=5m 

CBSE XII Science Physics

A body at rest of mass 4 pound and charge 3 esu placed inside uniform electric field intensity 4N/C. Find the velocity of the charge body after 2 sec.

JEE Plances JEE (Main) Physics

Question

JEE Plances JEE (Main) Chemistry Atomic Structure

the radius of an  orbital hydrogen atom is 0.85nm calculate velocity of electron in this orbital 

ICSE X Physics

Cricket ball weighing 200 gram Rises to a vertical  height of 26 m  and drops vertically into a fielders  hand when 1.5 m above the ground the fielder brings it to rest in 1 /10 seconds calculate the velocity of ball as it reaches the fielders hand b.the average force that must be applied in stopping it 

ICSE X Physics

Force of 0.8 gf acts  on a glass ball of mass 250 gram for 10 seconds if initially the ball is moving with a velocity of 50 cm per second find final velocity and distance covered  by ball

JEE Plances JEE (Main) Physics

The pt from where a ball is projected is taken as the origin of the coordinate axis the x and y components of its displacement are given by x= 6t and y=8t-5t^2 what is the velocity of projection?

CBSE XI Science Physics

the position of an object moving aong X-axis is given by X=a+bt2 where a=8.5m, b=2.5m/s2 and t  is measured in seconds. what is its velocity at t=0s and t=2.0s. what is the average velocity b/w t=2.0s and t=4.0s?

JEE Plances JEE (Main) Physics

Please help me to do this

CBSE IX Physics

Is there any difference between speed and velocity?

NEET1 NEET1 Physics

If the velocity of a particle is given by v=√(180-16x)m/s , then its acceleration will be  

JEE Plances JEE (Main) Physics

Solve it

JEE Plances JEE (Main) Chemistry Gaseous State

5th?

NEET1 NEET1 Physics

A body is projected horizontally with a vertical of 4ms-1 from the top of a high tower .The velocity of the body after 0.7s is nearly:g=10ms-2  

JEE Plances JEE (Main) Physics

In fig shown ,the system is released from rest.Find the velocity of block A when block B has fallen a distance l.Assume all pulleys to be massless and frictionless.

NEET1 NEET1 Physics

Acceleration a=(2-t) m/s ,in how much time the change in velocity become zero?

NEET1 NEET1 Physics

from certain height the ball is given velocity v0.when it hits the ground the velocity is 2v0.find the average velocity for complete motion  

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

CBSE IX Physics Force and Laws of Motion

a force of 30n act on a body of mass 10kg at rest on a smooth surface . what will be the velocity of the body after 5 seconds  

NEET1 NEET1 Physics

Two friends A and B are standing a distance x apart in an open field and wind is blowing from A to B. A beats a drum and B hears the sound t1 time after he sees the experiment is repeated . This time B hears the drum t2 time after he sees the event. Calculate the velocity of sound in still air V and the velocity of wind u.

NEET1 NEET1 Physics

A man is crossing river flowing with velocity 5m/s. He reaches a point directly across at distance of 60m in 5s. His velocity in still water should be

NEET1 NEET1 Physics

A motion boat going down stream comes over a floating body at a point A. 60 minutes later it turned back and after some time passed the floating body at a distance of 12km from the point A. Find the velocity  of the stream assuming constant velocity for the motor boat in still water

CBSE IX Physics

Accelaration of a car in a motion is 1.5m/s2 . How much is the increase in a velocity in 4s

JEE Plances JEE (Main) Physics

A particle is moving along a vertical circle of radius R. The velocity of particle at P will be(assume critical condition at C)

JEE Plances JEE (Main) Physics

The velocity of centre of mass of the system as shown in the fig

JEE Plances JEE (Main) Physics

A particle of mass 2kg moving with a velocity 5i m/s collides head on with another particle of mass 3kg moving with a velocity -2i m/s .After the collision the first particle has speed of 1.6m/s in negative x direction.Find velocity of the centre of mass after the collision, velocity of the second particle after the collision ,coefficient of restitution.

JEE Plances JEE (Main) Physics

A body of mass M moves in outer space with velocity v.It is desired to break the body into two parts so that the mass of one part is one tenth of the total mass .After the explosion ,the heavier part comes to rest while the lighter part continues to move in the original direction of motion.The velocity of the small part will be

CBSE VII Science Motion and Time

Explain the following concept  in your own word with everyday example . Force ,work,displacement ,velocity, acceleration,distance 

CBSE XI Science Physics

In a rocket, the mass of the fuel is 90℅ of the total mass. The exhaust gasses are ejected at a speed of 2km/s. Find the maximum speed attained by the rocket with diagram. Neglect gravity and air resistance and take the initial speed of the rocket to be zero. (Given, log e 10 = 2.3)

NEET1 NEET1 Physics

PLS HELP IN THESE TWO QUES PLS .....

CBSE VII Science

sachin and sameer started on a motorbike from place A took turn at B did the task at C travelled by the route CD to D and then went on to E. Altogether, they took one hour for this journey . Find out the actual distance traversed by them and the displacement from A to E. From this , deduce their speed . What was their velocity from A to E in the direction AE? Can this velocity be called average velocity  

NEET1 NEET1 Physics

Please solve these three questions.

NEET NEET Physics

Two identical particles move towards each other with velocity 2v and v respectively. The velocity of center of mass

CBSE XI Science Physics

Calculate the velocity of transverse waves in a copper wire of 1mm^2 in cross section under the tension produced by 1kgwt.The density of copper =8.93kg m^-3.

CBSE XI Science Chemistry States of Matter

Solve 5.24 sum plz

ICSE X Physics Work, Energy and Power

A force of 100N acts on an object of mass 10kg for 9seconds. If the object was initially moving with the speed of 10m/s, calculate the initial and final kinetic energy of the object.By what factor does the kinetic energy increase?

CBSE IX Physics Motion

how to understand in a speed distance equation that we have to plus it or minus it  please give the key words to understand it like usual speed will be plus or minus.

NEET NEET Physics Kinematics

A child traveling in a train throws a ball outside with a speed v .according to a child who is standing on the ground the speed of the ball is Same as v Greater than v Less than v None of the above

CBSE IX Physics Motion

Ashik while trying to find the velocity of a pulse took 4.5 sec to go four times the length of a slinky which is 10 m. The velocity of the pulse is?

ICSE VII Physics Motion

A train is accelerating at a rate 2m/s. If its initial velocity is 20m/s, what is its velocity after 30 seconds

ICSE VIII Physics Kinetic Theory of Matter

particles of which matter move with high speed and why

CBSE XI Science Physics Motion in a Straight Line

A mass A is released from the top of a smooth inclined plane 18m long and reaches the bottom 3 seconds later. At the instant when A is released another body B is projected up along the same plane from the bottom.  An travels a distance up the plane and reached the bottom simultaneously with A. The two masses do not collide. Then the initial velocity of B is?

CBSE XI Science Maths Limits and Derivatives

A particle moves along a straight line such that its displacement s at any time t is zero is s=t^3-6t^2+3t+4 meters, t being in second. The velocity when acceleration is zero is

CBSE XII Science Physics

What isthe effect of velocity on charge?

JEE Main Physics

solve

CBSE X Maths

A motor boat covers the distance between two places on a river and returns in 14 hrs if the velocity of boat in still water is 35 kmph and the e velocity of water in river is 5kmph.The distance between two places is..??

JEE Main Physics

Three particles start from the origin at the same time,one with a velocity u1       along x axis,the second along the y axis with a velocity u2 and the third along the x=y line.the velocity of the third so that the three may lie on the same line is??

CBSE XI Science Physics

Position of a particle is given as x= 10t - t^2. Particle comes to rest momentarily at t =? 

CBSE XI Science Physics

Position of a particle with time is given as x = t^3 - 3t^2. Instant when it turns back is t=? 

CBSE XI Science Physics Motion in a Straight Line

a body covers first 1/3 part of journey with velocity 2m/s, next 1/3 part with velocity 3m/s and rest of the journey with velocity 6m/s. find average velocity of the body.  

CBSE IX Physics

diffrent between speed and velocity  

CBSE IX Physics Motion

What is mean by velocity  

CBSE XI Science Physics

Whose velocity is more A or B ?

CBSE IX Physics Motion

is initial velocity denoted by ' u '  

CBSE IX

What is the initial velocity defines as 

CBSE IX

what is the initial velocity pls answer the question cuz I have my exam tomorrow... I didn't understand initial velocity pls explain it to me 

CBSE XI Science Physics

Draw velocity time graph for both A and B ?

Maharashtra IX Physics

Bullet having a mass of 10 gram and moving with a speed of 1.5 metre per second penetrates a thick wooden plank of mass 900 gram the plank was initially at rest the bullet gets embedded in the plank both andmove together determine their velocity.

ICSE XI Science Physics

an athlete of mass 87.4 kg jumps off the ground. the peak of his jump is 2.2m given that the athlete is completely stationary at the peak what was his take off velocity

CBSE XI Science Physics

A particle initially at rest moves along a straight line with acceleration given by a= 4t - 2. The particle will be again at rest at time 

CBSE XI Science Physics

The acceleration of a body moving along x axis depends on time as a ^ 1/2 directly proportional to t. The velocity of body is proportional to time T as ( initially particle is at rest) 

NEET NEET Physics

what is ratio of average velocity to maximum velocity

CBSE IX Physics Motion

A car travels a distance of 360km in 5 hours. what will be the speed in m/s?

NEET NEET Physics Oscillations and Waves

Please give me solutions sir

CBSE XI Science Physics

Initial velocity of a partial moving with constant acceleration a = - 10j m/s^2 is u = (20i +10j) m /s its speed at t =3 is 

CBSE XI Science Physics

The position of a particle is given by r = 4ti +2t^2j)m. Its Y component of velocity at t =1s is

JEE Main Physics

A balloon having mass ‘m’ is filled with gas and is held in hands of a boy. Then suddenly it get released and gas start coming out of it with a constant rate. The velocities of the ejected gases is also constant 2 m/s with respect to the balloon. Find out the velocity of the balloon when the mass of gas is reduced to half.    Plz explain it briefly and step by step

NEET NEET Physics

Please solve this question

CBSE XI Science Chemistry Structure of Atom

The de Broglie wavelength of an electron travelling with 20% of velocity of light is nearly equal to

CBSE XI Science Physics

A particle is moving along a circle of radius R with a uniform speed v. At t=0,the principal is moving along east. Find the charge in velocity (magnitude and direction)in (a)​​​ 1/4 Revolution,(b) 1/2revolution(c)3/4 Revolution and (d)1revolution  

JEE Main Physics

A bullet of mass M moving with velocity U just grazes the top of a solid cylinder of mass M and radius R resting on a rough horizontal surface .If the cylinder rolls without slipping then find the angular velocity of cylinder and the final velocity of the bullet

CBSE XI Science Physics

Find Vp/Vq.        

JEE Main Physics

A car loaded with sand is moving with velocity v. Sand is falling through hole as shown in fig. After falling on ground sand will be

NEET NEET Physics Physics and Measurement

Dimension of velocity.  

CBSE XII Science Physics

Please answer this

JEE Main Physics

Q1

NEET NEET Physics

If a=g-kv then what is the velocity of the particle for very long time and initially particle is at rest fir time t=0? Where a is acceleration g, k is constant and v is velocity.

JEE Main Physics

Please solve the question 

JEE Main Physics

Sir, please help me solve this question.

CBSE IX Physics Motion

A bicycle accelerates from a speed of 2m/s to 10m/s in 8s . What is its average speed?  

CBSE IX Physics Motion

A ball hits a wall horizontly at 6 m/s. It rebounds horizontly at 4.4m/s.The ball is in contact with the wall for .04 sec. What is the acceleration of the ball?

CBSE XII Science Physics

21st sum

CBSE XII Science Physics

15th sum plz

ICSE IX Physics Propagation of Sound Waves

A wave has amplitude equal to 8 cm and the wavelength of 2 m the frequency of the wave is 150 Hz. (i) Draw the graph of the wave representing displacement and distance. (ii) Calculate the velocity.

CBSE XII Science Physics Ray Optics and Optical Instruments

When a person is moving with a constant speed the speed of his/her image appears to increase substantially as he/she moves closer to the mirror as noticed by a person sitting in a stationary car. Why? 

CBSE XI Science Physics System of Particles and Rotational Motion

A hollow sphere is released from rest on a rough inclined plane as shown in the figure. Find the velocity of point  of contact as a function of time. (m=mass of hollow sphere,R=radius of sphere)

CBSE XI Science Physics Oscillations

In Shm where velocity is maximum or zero    

JEE Main Physics Rotational Motion

fina velocity of point A of road when it reaches at point o

JEE Main Physics Electrostatics

find velocity of charge. pls solve by using mechanical energy conservation

CBSE IX Physics Motion

draw a diagram to show the motion of a body whose speed remained the constant but velocity constitution change

NEET NEET Physics

please answer this

NEET NEET Physics

please answer this

ICSE X Physics Sound

Derive relation between -wavelength ,wave velocity and frequency.

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?

NEET NEET Physics Kinematics

please answer this

CBSE XI Science Physics

The position of a particle at any instant is given by r = 5t² i + 50t j. At what instant the velocity    vector will make an angle 45° with X-axis. 

ICSE VII Physics Motion

What is the meaning of velocity

CBSE XII Science Physics

pls solve the problem

CBSE XI Science Physics Motion in a Straight Line

pls explain

ICSE VI Physics Force

velocity ​​​​

ICSE VII Physics Physical Quantities and Measurement

What is scalar and I can't understand the difference between velocity ratio and speed  

NEET NEET Physics

please answer this ?

NEET NEET Physics

True or false please answer with explaination ?

CBSE XI Science Physics Motion in a Straight Line

please answer 7,8,9 and 10.

NEET NEET Physics Kinematics

please answer this

JEE Main Physics

Sir plz solve it step by step 

ICSE X Physics Work, Energy and Power

A metal sphere of mass 200g falls from a height of 5 m. Calculate velocity with which it will strike the ground.g=10m/s-2

ICSE VII Physics Physical Quantities and Measurement

What is vilocity

CBSE X Physics Light - Reflection and Refraction

question no. 15

ICSE X Physics Work, Energy and Power

work ch.

ICSE X Physics Work, Energy and Power

power numerical

CBSE XI Science Physics

13 no.

CBSE IX Physics Force and Laws of Motion

A bullet of mass 3 kg is fired with a velocity of 150 metre per second find its momentum  

ICSE X Physics Work, Energy and Power

exercise 2c q6

CBSE IX Physics Motion

A car is coasting backwards down a hill at -3.0 m/s when the driver gets the engine started. After 2.5s, the car is moving uphill at a velocity of +4.5 m/s. What is the car's acceleration?  

CBSE XI Science Physics Work, Energy and Power

plz elaborate by figure and step by step question no 5

ICSE IX Physics Motion in One Dimension

Differentiate between speed and velocity ? And what is acceleration?   

CBSE XI Science Physics Motion in a Straight Line

physics

CBSE XI Science Physics Gravitation

A tunnel is dug along the diameter of the earth. There is a particle of mass m at the centre of the tunnel. Find the minimum velocity given to the particle so that is just reaches to the surface of the earth (R=radius of the earth)

CBSE XI Science Physics Motion in a Straight Line

The distance x covered by a body moving in a straight line in time t is given by the relation- 2x²+3x=t If v is the velocity of body at a certain instance of time, find it's acceleration.

CBSE IX Physics Motion

A racing car starts from rest and has uniform acceleiation of 5m/sec ^2.If it travels for 20sec  ,find the final velocity at this instant  

ICSE VII Physics

Why speed is mark as v

CBSE IX Physics Motion

What is the difference between VELOCITY & ACCELARATION

ICSE IX Physics Motion in One Dimension

difference between VOLOCITY AND ACCELARATION    

ICSE IX Physics Motion in One Dimension

Difference between Velocity and accelaration  

ICSE IX Physics Motion in One Dimension

What is the difference between variable velocity and variable acceleration

CBSE VII Science Motion and Time

What is the formula for velocity?

ICSE IX Physics Motion in One Dimension

what  is the difference between variable velocity and variable acceleration

ICSE IX Physics Motion in One Dimension

Write an equation to represent uniform motion.

ICSE IX Physics Motion in One Dimension

Can the average velocity of a particle be zero when its average speed is not zero?

ICSE VII Physics Physical Quantities and Measurement

A cyclist is travelling at 20m/s,is accelerating at4 m/s2,what isit's velocity after 5 seconds ??

CBSE IX Physics Motion

A body is moving with a velocity of 10 m/s .if the motion is uniform what will be the velocity after 10s

ICSE VII Physics Motion

The quantity which tells the distance of a body travels in a certain time is called :  a) Acceleration  b) Velocity c) Displacement  d) None of these

CBSE XI Science Chemistry Structure of Atom

chemistry atomicstructure

CBSE IX Physics Motion

a body travels along a circular path of radius 70 me after travelling half a revolution in 20 seconds find the average speed and average velocity

ICSE IX Physics Motion in One Dimension

What are the physical quantity of motion under scalar and vector quantity with their MKS and CGS units

CBSE XI Science Physics Motion in a Straight Line

A ball is projected vertically upwards with a velocity v. It comes back to ground in time t. Draw the correct v-t graph taking into consideration the sign convention.

CBSE IX Physics Motion

what is velocity

CBSE XI Science Physics

u=3i+4j     IuI=  =  = 5

a= 0.3i+0.4j     IaI=  = = 0.5

t= 5 seconds

v= u+at            v= 5 + 0.5(10)   = 5+5  =>  v=10 units

INCORRECT or CORRECT?

CBSE XI Science Physics

What is the relationship between speed and velocity    

CBSE VII Science Motion and Time

what is speed and velocity

CBSE IX Physics

A marble is dropped into a frictionless U tube. If the tube is semi circular with  mean radius 5 cm and mass of the ball 2 gram, then find its velocity at the bottom of the tube.

CBSE IX Physics Motion

define velocity

CBSE IX Physics Motion

What is Velocity?

JEE Main Physics Kinematics

a body covers 200cm in first 2sec and 220 cm in next 4sec with deceleration velocity of the body at the end of seventh second is  

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. 

JEE Main Physics Kinematics

A particle started moving in a straight line.Its acceleration at time t seconds is given by a=(-5t^(2)+5)m/s^(2) t>=0 .Find the time for its maximum velocity and maximum velocity of the particle v(max)?

NEET NEET Physics Kinematics

A particle is moving along a straight line according to x = t ^ 2-4t + 10. (1) The initial velocity of the particle will be (2) At t = 2sec. The velocity of the particle will be. (3) Time interval 0 to 2sec. Calculate the average velocity of the particle in?

NEET NEET Physics Kinematics

solve this

JEE Main Physics Kinematics

a particle in 1D motion is subjected to an acceleration a = -alpha . t, where alpha is a positive constant. initial velocity is u at t = 0. the velocity of particle after time t is​

CBSE IX Physics Motion

A force acts for 10 secs on a stationary body of mass 100kg after which the force ceases to act. The body moves through a distance of 100m in the next 5 secs. Calculate:- i) the velocity acquiured by the body ii) the acceleration producced by the force iii) the magnitude of the force

ICSE IX Physics Work and Energy

physics

JEE Main Physics Laws of Motion

pls solve

CBSE XI Science Physics Motion in a Straight Line

Derive an expression for average velocity and instantaneous velocity for the motion of an object in x-y plane.

CBSE XI Science Physics Motion in a Straight Line

the velocity of a particle moving along x axis is given by v=x2 - x, where x is metre and v in m/s what is its position when velocity is minimum

CBSE XI Science Physics Motion in a Straight Line

what is numerical ratio between velocity and speed

CBSE XI Science Physics Motion in a Plane

A particle of mass m is given speed u at angle theta at topmost point It breaks into two equal parts one comes to rest  find point of landing of second mass

JEE Main Physics Oscillations and Waves

a particle execute a shm of period 10sec& amplitude of 1.5 m calculate it's max acceleration & velocit

CBSE IX Physics Gravitation

a stone is released from the top of the tower of height 19.6 m calculate its final velocity just before touching the ground

CBSE IX Physics Motion

A ball thrown up vertically returns to the earth after 12 seconds. Find the velocity with which it was thrown up.

CBSE XI Science Physics Motion in a Straight Line

please solutions

JEE Main Physics Kinematics

velocity vs displacement graph represents what?

JEE Main Physics Kinematics

A tube of mass 2m and radius 'R' is kept on smooth horizontal surface. A small sphere of mass m kept inside tube is imparted velocity v_{0} along y axis as shown in figure. The sphere just fits into the tube. Motion of particle and tube take place in horizontal plane and there is no friction at any contact. Then, speed of particle when it reaches point B is

CBSE XII Science Physics Electric Charges and Fields

A beam of electrons, moving with avelocity of 10^7m/s, enters midway between two horizontal parallel plates in a directions parallel to the plates. Each plate is 5 cm long. These plates are kept 2 cm apart and a potential difference of 90 V is applied between, them. Calculate the velocity of the electron- beam with which it just grazes the edge of the positive plate. (e  /m=1.8×10^{11}  c/kg)

JEE Main Physics Electrostatics

In free space, a particle A of charge 1μC is held fixed at a point P. Another particle B of the same charge and mass 4μg is kept at a distance of 1mm from P. If B is released, then it's velocity at a distance of 9mm from P is:-

NEET NEET Physics Laws of Motion

phy

JEE Main Physics Kinematics

A 5kg mass freely falling and experiencing a retarding force of 5v where v is the speed in m/sec has

CBSE XI Science Physics Motion in a Straight Line

X = t2 + 2t Find velocity at t = 2 Sec

NEET NEET Physics Kinematics

explain

NEET NEET Physics Kinematics

solve it plz

NEET NEET Physics Kinematics

A particle starts from rest and moves with an acceleration a=2t . Find velocity at t=3seconds.

JEE Main Physics Kinematics

A stationary man observes that the rain strikes him at an angle of 60∘ to the horizontal. When he begins to move with the velocity of 25m/s then the drops appear to strike him at an angle 30∘ from horizontal. The velocity of the rain drops is : (Explain with diagram)

CBSE IX Physics Motion

An object starts from rest and travels 20m in first 2 s and 160 m in 4 s . Find its velocity 7 s after the start .

CBSE XI Science Physics Motion in a Straight Line

if position 'x' defined a function of time as: x(t)=t*3+2t*2+3t+4 . (1) find initial position of particle (2) find velocity in time interval from to =0 at t=3 second

CBSE IX Physics Motion

can velocity be constant with acceleration?