A tennis player receives a shot with the ball (0.0600 kg) traveling horizontally at 56.0 m/s and returns the shot with the ball traveling horizontally at 36.0 m/s in the opposite direction. (Assume the initial direction of the ball is in the -x direction.)
(a) What is the impulse delivered to the ball by the racket? N·s Direction +x -x .
(b) What work does the racket do on the ball?