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 straight backward ata speed of 9.2 m/s.
(a) Whatimpulse is exerted on the wall?
(b) If theball is in contact with the wall for 3.0 ms, what average force isexerted on the wall by the ball?
(c) Therebounding ball is caught by a player who brings it to rest. Duringthe process, her hand moves back 0.50 m.What is the impulse received by the player?.. and thedirection?
(d) Whataverage force was exerted on the player by the ball?
(a) Whatimpulse is exerted on the wall?
(b) If theball is in contact with the wall for 3.0 ms, what average force isexerted on the wall by the ball?
(c) Therebounding ball is caught by a player who brings it to rest. Duringthe process, her hand moves back 0.50 m.What is the impulse received by the player?.. and thedirection?
(d) Whataverage force was exerted on the player by the ball?

Explanation / Answer

(a)    Impulse I = mvf -mvi = m( v f - vi ) = 0.06(9.2 - 10 ) =-0.048 (b) force F = I/t = 16N (c) Impulse I = mvf = (0.06)*(9.2) = 0.55 (d) Force F = ma = 5.07N here a = vf2 /2s = (9.2)2 /2(0.5) = 84.64

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