Question

A mover hoists a 50 kg box from the ground to a height of 2 m. What was the change in the box's energy

Answer 1

This is late, but your answer would be 1,000 J

Step-by-step explanation:

How I got my answer was I used the Gravitational Potential Energy Calculator on the calculator soup. the answer I got when I plugged 50 and 2 into the calculator is 980, but since it's not on the list of choices, I went with the closest one, 1,000 J

I got it correct on my test; here is the proof

Answer 2

980 J

Step-by-step explanation:

The change in box's energy is equal to its change in gravitational potential energy:

`\Delta U = m g \Delta h`

where

m = 50 kg is the mass of the box

g = 9.8 m/s^2 is the acceleration due to gravity

`\Delta h= 2m` is the change in height of the box

Substituting numbers, we find

`\Delta U = (50 kg)(9.8 m/s^2)(2 m)=980 J`