A body is pulled through a distance of 500m by a force of 20N. If...
PHYSICS
WAEC 2012
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
- A. 250.0s
- B. 25.0s
- C. 2.5s
- D. 0.5s
Correct Answer: B. 25.0s
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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