A person stands on a scale inside an elevator at rest. The scale reads W = 610 N. 1. What is the person's mass? 62 kg 2. The elevator accelerates upward momentarily at the rate of a = 3 m/s ^ 2, what does the scale read then? What is N? 3. The elevator then moves with a steady of 7 m/s. What does the scale read now? What is N