The graph below shows the acceleration of a hydraulic elevator in a four story school building as a function of time:- The graph begins at t = 0 s when the elevator door closed on the second floor and ends at t = 20 s when the door opened on a different floor. Assume that the positive directions for displacement, velocity, and acceleration are upward. Determine… the maximum speed of the elevator the duration of the brief jerk experienced by the elevator centered on 17.5 s  Sketch the corresponding graphs of… velocity-time position-time Determine… the most likely floor on which the elevator stopped

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Conservation of Energy

In physics, the rule of the conservation of energy states that energy doesn’t disappear from the atmosphere; instead, it changes its form from one type to another. Energy is one of the most important physical quantities in nature, and it cannot be created or destroyed — only transformed.