College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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Jumping up before the elevator hits. After the cable
snaps and the safety system fails, an elevator cab free-falls from a
height of 36 m. During the collision at the bottom of the elevator
shaft, a 90 kg passenger is stopped in 5.0 ms. (Assume that neither the
passenger nor the cab rebounds.) What are the magnitudes of the (a)
impulse and (b) average force on the passenger during the collision?
If the passenger were to jump upward with a speed of 7.0 m/s relative
to the cab floor just before the cab hits the bottom of the shaft, what are the magnitudes of the (c) impulse
and (d) average force (assuming the
same stopping time)?
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