A tennis player receives a shot with the ball (0.060 0 kg) traveling horizontally at 53.5 m/s and returns the shot with the ball traveling horizontally at 39.0 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 tennis racquet?
________ N · s
(b) What work does the racquet do on the ball?
________J