A ball of mass 0.4 kg moving with a uniform speed of 2 ms. strikes normally a wall and rebounds. Assuming the collision to be elastic and the time of contact of the ball with the walls is 0.4 s, find the magnitude of force exerted on the ball.

A ball of mass 0.4 kg moving with a uniform speed of 2 ms. strikes nor

1.	A ball of mass 0.4 kg moving with a uniform speed of 2 ms. strikes normally a wall and rebounds. Assuming the collision to be elastic and the time of contact of the ball with the walls is 0.4 s, find the magnitude of force exerted on the ball.
Answer» ANSWER :` 4N`