PHYSICS · Subjective · AP · Physics 1: Algebra-based · Force and Translational Dynamics · Force and Translational Dynamics
Problem
An elevator starts from rest at the ground floor. It accelerates upward at 3.0m/s2 for 4.0s, then immediately accelerates downward at 2.0m/s2 for 3.0s. A 70kg teacher is standing on a bathroom scale during the entire motion. Determine (a) the maximum and (b) the minimum readings the scale registers during this seven-second interval.