When a 45-Kg Person Steps on a Scale in an Elevator

question 106

Multiple Choice

When a 45-kg person steps on a scale in an elevator, the scale reads a steady 410 N. Which of the following statements must be true? (There could be more than one correct choice.)

• A) The elevator is accelerating downward at a constant rate.
• B) The elevator is moving downward at a constant rate.
• C) The elevator is accelerating upward at a constant rate.
• D) The elevator is moving upward at a constant rate.
• E) From the given information, we cannot tell if the elevator is moving up or down.

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