Jennifer hits a stationary 0.20-kg ball,and it leaves her racket at 40 m/s.Time-lapse photography shows that the ball was in contact with the racket for 40 ms.
(a)What average force did the ball exert on the racket?
(b)What is the ratio of this force to the gravitational force that Earth exerts on the ball?

Question

Quizplus · Accepted Answer

The Answer of Jennifer hits a stationary 0.20-kg ball,and it leaves her racket at 40 m/s.Time-lapse photography shows that the ball was in contact with the racket for 40 ms.
(a)What average force did the ball exert on the racket?
(b)What is the ratio of this force to the gravitational force that Earth exerts on the ball?

Jennifer Hits a Stationary 0