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Q: If a boy covers a distance of 20 meters with 600 Newton force in 4 minutes, then the amount of power consumed by the boy is?
  • A. 50watt
  • B. 100watt
  • C. 80watt
  • D. 25watt
Correct Answer: Option A - Time taken by the boy = 4×60=240sec Here, F=600N, and d=20m Now, work done = 600×20=12000J Total power consumed by the boy =12000/240=50 watt
A. Time taken by the boy = 4×60=240sec Here, F=600N, and d=20m Now, work done = 600×20=12000J Total power consumed by the boy =12000/240=50 watt

Explanations:

Time taken by the boy = 4×60=240sec Here, F=600N, and d=20m Now, work done = 600×20=12000J Total power consumed by the boy =12000/240=50 watt