A tennis player dangles her racket of 1000 g with a speed of 15.0 m/s. She strikes a tennis ball of 60 g that was approaching her at a speed of 18.0 m/s. The ball rebounds at around 40.0 m/s.
Part i) Determine how fast is her racket moving instantly after the impact? You can avoid the interaction of the racket with her hand for the concise duration of the collision.
Part ii) When the tennis ball and racket are in contact for 7.00, determine the average force which the racket applies on the ball?