A 2.50 kg ball moving at 7.50 m/s is caught by a 70.0 kg man while the man is standing on ice. How fast will the man / ball combination be moving after the ball is caught by the man?

Question

Physics

Quintin Stewart

19 April, 06:08

A 2.50 kg ball moving at 7.50 m/s is caught by a 70.0 kg man while the man is standing on ice. How fast will the man / ball combination be moving after the ball is caught by the man?

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Answers (1)

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Xiomara Atkinson · Answer 1

Momentum p = mv is conserved.

before: p = 2.5 * 7.5 + 70 * 0

after: p = (2.5 + 70) * v

p before = p after

2.5 * 7.5 = (2.5 + 70) * v

v = 2.5 * 7.0 / (2.5 + 70)