Connie lifts a 20 pound box from the floor onto a loading dock 2 ft. off the ground. Sam slides the same box along a ramp to move it up another 2 ft. onto a flatbed truck. Who has done more work?

They have done an equal amount of work

Explanation

Work is force multiplied by distance. Because both Connie and Sam moved the same weight the same distance they have done an equal amount of work. Sam employed the mechnacial advantage of an inclined plane so he exerted less effort to do the work but the amount of work done was still the same.

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