Question

A tow truck exerts a force of 8000 N to move a car a distance of 4 m in 20 seconds. Calculate the power of the tow truck..

1. 0.01 W
2. 100 W
3. 1600 W

Answer 1

3. 1600 Do the math on the calculator

Answer 2

Power = 1600Watts

Step-by-step explanation:

Power is given by the rate of energy expended or work done by a body (or object).

Power =
`(Workdone)/(time)`

Where;

Workdone = Force x distance

=> Power = Force x distance / time -----------------------(i)

According to the question,

Force = 8000N

distance = 4m

time = 20 s

Substitute these values into equation (i) above

=> Power = 8000 x 4 / 20

=> Power = 1600Watts

Therefore the power of the tow truck is 1600Watts