A ball of mass 0.15kg is kicked against a rigid vertical wall with a horizontal...
PHYSICS
JAMB 1998
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 Answer: D. 12.0Ns
Explanation
Impulse = m(v-u)
= 0.15(50--30)
= 0.15 X 80
= 12N/s
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