A 615 N student standing on a scale in an elevator notices that the scale reads 645 N.From this information,the student knows that the elevator must be moving upward.

Question

Quizplus · Accepted Answer

The scale reading higher than the student's weight indicates that the elevator is accelerating upward, not necessarily moving upward. The elevator could be moving downward but decelerating.

A 615 N Student Standing on a Scale in an Elevator