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A ball of mass 0 15kg is kicked against a rigid... - JAMB Physics 1998 Question

A ball of mass 0.15kg is kicked against a rigid vertical wall with a horizontal velocity of 50ms-1. If it rebounced with a horizontal velocity of 30ms-1, Calculate the impulse of the ball on the ball · ·

A
3.0Ns
B
4.5Ns
C
7.5Ns
D
12.0Ns
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Correct Option: B

Impulse = m(v-u)

    = 0.15(80-50)<br />

    = 4.5N/s
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