JAMB - Physics (1992 - No. 6)
A man weight 800N climbs up a stairs to height of 15m in 12.5s. What is the man''s average power output?
667W
810W
960W
15000W
解释
power = \(\frac{\text {work done}}{time}\)
= \(\frac{800 \times 15}{12.5}\)
= 960W
= \(\frac{800 \times 15}{12.5}\)
= 960W