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Topic: Physics - Potential Energy Person A lifts a rock with a weight of 1.0 N...

Topic: Physics - Potential Energy

Person A lifts a rock with a weight of 1.0 N through a height of 1.0 m, and then lowers it back down to the starting point. Person B pushes a table 1.0 m across the floor at constant speed, requiring a force of 1.0 N, and then pushes it back to where it started.

(a) Compare the total work done by person A and person B.

(b) Check that your answers to part (a) make sense, using the definition of work: work is the transfer of energy. In your answer, you’ll need to discuss what specific type of energy is involved in each case.

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