Question

A group of people move a large box that weighs 90 Newtons, 10 meters in 20 seconds, how much power was used?

Answer 1

Given,

Weight of the box or Applied force = 90 N

Displacement = 10 metres

Time elapsed = 20 seconds

To find,

The amount of power used.

Solution,

We can simply solve this mathematical problem by using the following mathematical process.

First of all, we have to calculate the work done,

Work done = Force × Displacement

= (90×10) [Putting the given values.]

= 900 joules

Power used = Work done/Time elapsed

= (900/20)

= 45 joule per second

= 45 watts

Hence, 45 watts of power is used.