Suppose We Put a Ball at Rest on a Rug

Multiple Choice

Suppose we put a ball at rest on a rug and then start pulling the rug out from under the ball in a certain direction. The ball rolls without slipping on the rug as the rug moves under it. The friction force that the contact interaction between the rug and ball exerts on the ball does

A) positive work on the ball.
B) negative work on the ball.
C) no work on the ball.