A woman lifts a box from the floor. She then moves with constant speed to the other side of the room, where she puts the box down. How much work does she do on the box while walking across the floor at constant speed?

Question

Quizplus · Accepted Answer

When moving at a constant speed on a horizontal surface, the net work done on the box by the woman is 0 J because the force she applies to move the box horizontally is countered by friction, and there is no change in the kinetic or potential energy of the box.

A Woman Lifts a Box from the Floor