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

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 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 ball of mass m moving with speed v towards the right strikes a wall moving towards the left with speed u . Find the change in the K.E. of the ball if the collision is elastic.

A billiard ball moving with a speed of 5 m//s collides with an identical ball, originally at rest. If the first ball stop dead after collision, then the second ball will move forward with a speed of: