A body is pulled over a distance of 500m by a force of 20N. If the power developed is o.4 kW, calculate the time interval during which the force is applied
-
A.
0.2s -
B.
2.5s -
C.
25.0s -
D.
250.0s
Correct Answer: Option C
Explanation
t = (frac{fs}{p} = frac{20 times 500}{0.4 times 1000} = 25s)