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
- A. 140.0N
- B. 20.0N
- C. 4.0N
- D. 0.8N
Correct Answer: B. 20.0N
Explanation
F = \(\frac{mv - mu}{t} = \frac{16 - 12}{0.2} = 20N\)
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