Question

A student lifts a backpack with a force of 50 Newtons. She lifts the backpack 2 meters off the floor. Calcaulate the work she has done.

Answer 1

100 J

Answer 2

W = F*d right?

Answer 3

100 newton-meters? might be a joule lol

Answer 4

thanks

Answer 5

if it was a liquid being lifted, we could use calculus to find the work done :) but this is just a solid mass moved thru a distance so F*d is good

Answer 6

actually she had to move her body through the same distance...so work done by her is >100J