May 28, 2016

Homework Help: physics

Posted by johnny on Saturday, December 13, 2008 at 3:07pm.

The people move toward the door at speed vs = 3.7 m/s, are each d = 0.20 m in depth, and are separated by L = 1.75 m. The arrangement in the figure occuurs at time t = 0.
(a) At what average rate the layer of people at the door increase?

(b) At what time does the layer's depth reach 5.9 m? (The answer reveals how quickly such a situation becomes dangerous.)

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