Question on: WAEC Physics - 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
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Correct Option: B
F = (\frac{mv - mu}{t} = \frac{16 - 12}{0.2} = 20N)
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