A 0.060-kg handball is thrown straight toward a wall with a speedof 10 m/s. It r

Question

A 0.060-kg handball is thrown straight toward a wall with a speedof 10 m/s. It rebounds straightbackward at a speed of 8.5 m/s. (a) What impulse is exerted on thewall?

(b) If the ball is in contact with the wall for 3.0 ms, whataverage force is exerted on the wall by the ball?
(c) The rebounding ball is caught by a player who brings it torest. During the process, her hand moves back 0.40 m. What is the impulse received by theplayer?
(d) What average force was exerted on the player by theball?
(a) What impulse is exerted on thewall?

(b) If the ball is in contact with the wall for 3.0 ms, whataverage force is exerted on the wall by the ball?
(c) The rebounding ball is caught by a player who brings it torest. During the process, her hand moves back 0.40 m. What is the impulse received by theplayer?
(d) What average force was exerted on the player by theball?

Explanation / Answer

(a) The impulse I = 0.06kg ( 8.5 + 10m/s ) = .1.11 kgm/s (b) the avg force F = I/ t = 1.11 / 3.0*10-3 = 370N (c) Impulse I = 0.06(8.5) = 0.51 kgm/s (d) time taken t = 0.4m/8.5m/s = 0.047s avg force   F = I/t = 0.51/0.047 =10.85 N

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