A ball of mass 5.0kg hits a smooth vertical wall normally with a speed of...

WAEC 1996

A ball of mass 5.0kg hits a smooth vertical wall normally with a speed of 2ms^-1 and rebounds with the same speed. Determine the impulse experienced by the ball

A. 20.0kg ms^-1
B. 10.0kg ms^-1
C. 5.0kg ms^-1
D. 1.3kg ms^-1
E. 0.0kg ms^-1.

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Correct Answer: Option A

Explanation

Impulse = Ft = mu - (-mu)
= mu + mu = 2mu = 2 x 5 x 2 = 20kgms^-1

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A ball of mass 5.0kg hits a smooth vertical wall normally with a speed of...

Correct Answer: Option A

Explanation

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