Question

A boy lifts a 7 Kg microwave oven 2 meters off the ground. How much work did the boy do on the

microwave?
What is the work?

Answer 1

The answer is 140J or 140Nm

Explanation:

Work done=mgh

W=7×10×2

W=140J or 140Nm

Answer 2

140J

Explanation:

work done = Mass x acceleration x distance

mass = 7kg

acceleration = 10m/s^2

distance= 2m

work = 7 x 10 x 2

= 140j