College Physics
10th Edition
ISBN: 9781285737027
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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Chapter 5, Problem 69AP
(a) A 75-kg man steps out a window and falls (from rest) 1.0 m to a sidewalk. What is his speed just before his feet strike the pavement? (b) If the man falls with his knees and ankles locked, the only cushion for his fall is an approximately 0.50-cm give in the pads of his feet. Calculate the average force exerted on him by the ground during this 0.50 cm of travel. This average force is sufficient to cause damage to cartilage in the joints or to break bones.
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Chapter 5 Solutions
College Physics
Ch. 5.1 - In Figure 5.5 (a)-(d), a block moves to the right...Ch. 5.3 - Three identical halls are thrown from the top of a...Ch. 5.3 - Bob, of mass m, drops from a tree limb at the same...Ch. 5.5 - Prob. 5.4QQCh. 5 - Physics Review A crane lifts a loud of bricks of...Ch. 5 - Physics Review A crate of mass 20.0 kg rest on a...Ch. 5 - Calculate the work done by an applied force of...Ch. 5 - Prob. 4WUECh. 5 - Prob. 5WUECh. 5 - A 4.00-kg crate Marling at rest slides dawn a...
Ch. 5 - A skier leaves a ski jump at 15.0 m/s at some...Ch. 5 - A block of mass 3.00 kg is placed against a...Ch. 5 - What average mechanical power must a 70.0-kg...Ch. 5 - A puck of mass 0.170 kg slides across ice in the...Ch. 5 - Consider a tug-of-war as in Figure CQ5.1, in which...Ch. 5 - During a stress test of the cardiovascular system,...Ch. 5 - (a) If the height of a playground slide is kept...Ch. 5 - (a) Can the kinetic energy of a system be...Ch. 5 - Roads going up mountains are formed into...Ch. 5 - A bowling ball is suspended from the ceiling of a...Ch. 5 - As a simple pendulum swings back and forth, the...Ch. 5 - Discuss whether any work is being done by each of...Ch. 5 - When a punter kicks a football, is he doing any...Ch. 5 - The driver of a car slams on her brakes to avoid...Ch. 5 - A weight is connected to a spring that is...Ch. 5 - In most situations we have encountered in this...Ch. 5 - Suppose you are reshelving books in a library. 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