You've always wondered about the acceleration of the elevators in the 101 story-tall Empire State Building. One day, while visiting New York, you take your bathroom scale into the elevator and stand on them. The scales read 150lb as the door closes. The reading varies between 120lb and 170lb as the elevator travels 101 floors.
Q1. What is the magnitude of the acceleration as the elevator starts upward?
Q2. What is the magnitude of the acceleration as the elevator brakes to a stop?