A 5,400 W motor is used to do work. If the motor is used for 640 s, about how much work could it do?

Question

Patricky

Physics

5 August, 00:18

A 5,400 W motor is used to do work. If the motor is used for 640 s, about how much work could it do?

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Answers (1)

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Liu · Answer 1

Since P=E/t,

where P=power (W),

E=energy (J) and

t=time (s).

Just rearrange this formula to obtain E=P*t=5400*640=3456000 J.

Energy and work are very related since energy is defined like the ability of doing work. Actually work is also measured in J so the answer is the one above.

Work = 3456000 J