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
correct option: b
Impulse = m(v-u)
= 0.15(80-50)
= 4.5N/s
= 0.15(80-50)
= 4.5N/s
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