Chapter 9, Problem 64A

(a)

To determine

To Explain:The momentum of the basketball is not conserved, though the bounce of collision.

Explanation of Solution

As basketball is falling and hits the floor, it exerts an external opposite force and gives the momentum to a basketball in opposite direction. Here floor is another system so momentum is another system. So, momentum is not conserved.

(b)

To determine

The system in which momentum is conserved.

Explanation of Solution

As basketball is falling due to gravity here ball plus earth is system. In this system momentum of ball is conserved. It is conserved when there is no outside force is present.