Serena Williams can serve a tennis ball with 750 Newtons of force. The ball and racquet are in contact for 0.003 seconds. What is the impulse exerted on the tennis ball?

2.25 Newton. seconds

Explanation:

Impulse is a rate of change of the momentum. It is calculated as a product of the average force over a time interval. Both measures are given here, so we can just apply the formula:

(impulse) = (avg. force) x (duration) = (750 N) x (0.003 s) = 2.25 N. s

2.25 newtons now you can give that person the brainlist.