A ball of mass 0.15kg is kicked against a rigid vertical wall with a horizontal…

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: Option B
Explanation

Impulse = m(v-u)
= 0.15(80-50)
= 4.5N/s

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