Home
Class 12
PHYSICS
A ball moving with a velocity v hits a m...

A ball moving with a velocity `v` hits a massive wall moving towards the ball with a velocity a. An elastic impact lasts for time `/_\t`

A

The average elastic force acting on the ball is `(m(u+v))/(Delta t)`

B

The average elastic force acting on the ball is `2m((u+v))/(Delta t)`

C

the kinetic energy of the ball increases by 2mu (u + v)

D

the kinetic energy of the ball does not change

Text Solution

Verified by Experts

The correct Answer is:
B, C
Promotional Banner

Similar Questions

Explore conceptually related problems

A ball is moving with velocity 2m//s towards a heavy wall moving towards the ball with speed 1m//s as shown in figure. Assuming collision to be elastic, find the velocity of ball immediately after the collision.

A ball is moving with velocity 2m//s towards a heavy wall moving towards the ball with speed 1m//s as shown in figure. Assuming collision to be elastic, find the velocity of ball immediately after the collision.

A ball collides elastically with a massive wall moving towards it with a velocity of v as shown. The collision occurs at a height of h above ground level and the velocity of the ball just before collision is 2v in horizontal direction. The distance between the foot of the wall and the point on the ground where the ball lands, at the instant the ball lands, will be :

A car is moving with velocity vec v_(c) towards north and a train is moving towards east with velocity vec v_(t) . Find the direction of relative velocity of car with respect to train.

A ball of mass m moving with velocity v collides head on elastically with another identical ball moving with velocity - V. After collision

A highly elastic ball moving at a speed of 3 m//s approaches a wall moving towards it with a speed of 3 m//s . After the collision. the speed of the ball will be

A cricket ball of mass 150 kg is moving with a velocity of 12 m//s and is hit by a bat so that ball is turned back with a velocity of 20 m//s . The force of the blow acts for 0.01 s on the ball . Find the average force exerted by the bat on the ball.

A ball of mass m moving with velocity v_0 collides a wall as shown in figure. After impact it rebounds with a velocity 3/4v_0 . The impulse acting on ball during impact is

A ball is moving towards the wall as shown in diagram then momentum is conserved

A particle of mass m is moving horizontally with a constant velocity v towards a rigid wall that is moving in opposite direction with a constant speed u . Assuming elastic impact between the particle and wall, the work done by the wall in reflecting the particle is equal to