Two men,Joel and Jerry,push against a car that has stalled,trying unsuccessfully to get it moving.Jerry stops after 10 min,while Joel is able to push for 5.0 min longer.Compare the work they do on the car.
A)Joel does 75% more work than Jerry.
B)Joel does 50% more work than Jerry.
C)Jerry does 50% more work than Joel.
D)Joel does 25% more work than Jerry.
E)Neither of them does any work.

Question

Quizplus · Accepted Answer

Work is defined as the product of force and displacement in the direction of the force. Since the car does not move, there is no displacement, and therefore, neither Joel nor Jerry does any work on the car, regardless of the time spent pushing.

Two Men,Joel and Jerry,push Against a Car That Has Stalled,trying