Question

The power of a
100 kg man is 150 W. Calculate the time taken
by him to climb the height of
20m.​

Answer 1

Explanation:

Time =work/power

So time =100/150 =2/3

Answer 2

solution

$p = \frac{w}{t} \\ = > p = \frac{mgh}{t } \\ = > t = \frac{mgh}{p} = \frac{100 \times 9.8 \times 20}{150} = > t = 130.67 \: \: sec$