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A person stands on a scale in an elevator. He notices that the scale reading is less than his usual weight. Which of the following could possibly describe the motion of the elevator?

A person stands on a scale in an elevator. He notices that the scale reading is less than his usual weight. Which of the following could possibly describe the motion of the elevator? Correct Answer It is moving upward and slowing down.

B-The scale reading is less than the man's weight; that means that the net force is downward. By Newton's second law, the person's acceleration is downward too. Downward acceleration means either moving down and speeding up, or moving up and slowing down. Only choice B works.

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