A ball of mass m approaches a wall of mass M m with speed 4

Last updated: 6/13/2023

A ball of mass m approaches a wall of mass M m with speed 4 m s along the normal to the wall The speed of wall is 1 m s towards the ball The speed of the ball after an elastic collision with wall is A 5 m s away from the wall B 9 m s away from the wall C 3 m s away from the wall D 6m s away from the wall