A force acting on a body causes a change in the momentum of the body…

Physics WAEC 2004

A force acting on a body causes a change in the momentum of the body from 12kg ms-1 to 16kg ms-1 in 0.2s. calculate the magnitude of the force

  • 140.0N
  • 20.0N checkmark
  • 4.0N
  • 0.8N

The correct answer is: B

Explanation

F = \(\frac{mv - mu}{t} = \frac{16 - 12}{0.2} = 20N\)
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