A body is pulled over a distance of 500m by a force of 20N. If...

WAEC 2011

A body is pulled over a distance of 500m by a force of 20N. If the power developed is o.4 kW, calculate the time interval during which the force is applied

A. 0.2s
B. 2.5s
C. 25.0s
D. 250.0s

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Correct Answer: Option C

Explanation

t = \(\frac{fs}{p} = \frac{20 \times 500}{0.4 \times 1000} = 25s\)

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A body is pulled over a distance of 500m by a force of 20N. If...

Correct Answer: Option C

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