1. A tennis player receives a shot with the ball (0.0600 kg) traveling horizontally at 58.0 m/s and returns the shot with the ball traveling horizontally at 42.0 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.
(b) what work does the racket do to the ball.
2. A pitcher throws a 0.15 kg baseball so that it crosses home plate horizontally with a speed of 25 m/s. It is hit straight back at the pitcher with a final speed of 19 m/s. Assume the direction of the initial motion of the baseball to be positive.
(a) What is the impulse delivered to the ball?
(b) find the average force exerted by the bat on the ball if the two are in contact for 2.0 ? 10-3 s.