# Question: A graph is plotted of the vertical velocity vy of

A graph is plotted of the vertical velocity vy of an elevator versus time. The y-axis points up.

(a) How high is the elevator above the starting point (t = 0) after 20 s has elapsed?

(b) When is the elevator at its highest location above the starting point?

(a) How high is the elevator above the starting point (t = 0) after 20 s has elapsed?

(b) When is the elevator at its highest location above the starting point?

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