Question

a ball having linear momentum strikes a rigid wall in a direction and rebounds with the same momentum in a direction normal to the surface of the wall. calculate the change in momentum of the ball

Answer 1

Answer:

Hello mate

Explanation:

The momentum of the ball is not conserved at all. But if it is an perfectly elastic collision the kinetic energy will be conserved and then from (1/2)m(V^2)i=(1/2)m(V^2)f you have the two velocities equal in magnitude. The momentum of the ball of course changes and the change is equal to two times the initial momentum