Thats the first thing i did it gives weiping did 20 J and Bubba did 2 J but what confuses me is that the object is moving with a constant velocity so has some kinetic energy so shouldn't work done by bubba be the sum of the kinetic energy and the work done in moving the object?
ok so if we assume the Gravitational field is constant and there is no friction then who did the greater amount of work?
But if we assume there is no friction then a forward force of 1 N would cause the table to accelerate forward but it moves at a constant velocity so let's assume there is 1 N...
[Mentor's note: this post does not use the homework template because it was originally posted in a non-homework forum. It was moved here because it had already received some help.]
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Weiping lifts a rock with a weight of 1.0 N through a height
of 1.0 m, and then lowers it back...