A 66.0-{rm kg} person stands on a scale in an elevator.What does the scale read (in {rm N}) when the elevator is at rest? What does the scale read (in {rm N}) when the elevator is climbing at a constant speed of 3.0 {rm m}/{rm s}? What does the scale read (in {rm N}) when the elevator is descending at 3.0 {rm m}/{rm s}?What does the scale read (in {rm N}) when the elevator is accelerating upward at 3.0 m/s^2? What does the scale read (in {rm N}) when the elevator is accelerating downward at 3.0 m/s^2?