How many watts of power (W) do you expend when you exert a force of 10 N that moves a

book 1.5 min a time interval of 2 s?

7.5

06.7

15

Power = 7.5 watt

Explanation:

Given dа ta:

Power expend = ?

Force applied = 10 N

Distance cover = 1.5 m

Time = 2 s

Solution:

Power = work / time

First of all we will calculate work.

Work = Force * distance

Work = 10 N * 1.5 m

Work = 15 N. m

Now we will calculate the power.

Power = 15 N. m / 2s

N. m/s = 1 watt

Power = 7.5 watt