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A man weight 800N climbs up a stairs to height of 15m in 12.5s. What...

Physics
JAMB 1992
A man weight 800N climbs up a stairs to height of 15m in 12.5s. What is the man''s average power output?
  • A. 667W
  • B. 810W
  • C. 960W
  • D. 15000W
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Correct Answer: Option C
Explanation
power = \(\frac{\text {work done}}{time}\)

= \(\frac{800 \times 15}{12.5}\)

= 960W
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