**Newton's 2nd Law help.** 5. Consider the situation where a person that has a mass of 68 kg is descending in an elevator at a constant velocity of 4.0 m/s. After 3 s, the elevator starts to slow to a stop at a rate of 2.0 m/s2. a. Using Newton’s 2nd Law, find the net force acting on the person in the elevator when it is descending at constant speed. b. Using Newton’s 2nd Law, find the net force acting on the person in the elevator when it is accelerating. c. Construct __quantitative__ force diagrams (include magnitudes) for the person in the elevator as it descends at constant speed and during its period of acceleration. d. If the person in the elevator were standing on a bathroom scale calibrated in Newtons, what would the scale read while the elevator was descending at constant speed and while slowing to a stop? Please explain your answers. |