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A body is pulled through a distance of 500m by a force of 20N. If the power developed ...

A body is pulled through a distance of 500m by a force of 20N. If the power developed is 0.4kW, calculate the time for which the force acts
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  • A 250.0s
  • B 25.0s
  • C 2.5s
  • D 0.5s
Correct Answer: Option B
Explanation:
Force x Distance = Power x Time
Time = \(\frac{Force \times Distance}{Power}\)
= \(\frac{20 \times 500}{0.4 \times 1000}\)
= 25.0s

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