WAEC Physics 2021 Objective — Question 34
Question 34 of 50 from the West African Examinations Council (WAEC) Physics 2021 Objective paper, with the correct answer and a full explanation.
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34. Aman weighing 200 N runs up a staircase in 5 s. If the height of the staircase is 9 m, calculate the power of the man.
- A. 1000 W
- B. 360 WCorrect
- C. 40 W
- D. 1800 W
Explanation
Power = Work/time = (Weight×height)/time = (200×9)/5 = 360 W.
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