Sagot :
———— QUESTION ————
A tennis player hits an approaching ball with a farce of 500N. If he hits the ball in 0.005 seconds, how much impulse is imparted to the tennis ball?
———— ANSWER ————
A. 2.5 N/s
——— Explanation ———
J = f × t
J = f × tJ = 500N × 0.005 secs
J = f × tJ = 500N × 0.005 secsJ = 2.5 N/s