(a) A 70-kg man steps out a window and falls (from rest) 1.2 m to a sidewalk. What is his speed just before his feet strike the pavement? m/s (b) If the man falls with his knees and ankles locked, the only cushion for his fall is an approximately 0.47-cm give in the pads of his feet. Calculate the average force exerted on him by the ground during this 0.47 cm of travel. This average force is tufficient to cause damage to cartilage in the joints or to break bones.

(a) A 70-kg man steps out a window and falls (from rest) 1.2 m to a sidewalk. What is his speed just before his feet strike the pavement? m/s (b) If the man falls with his knees and ankles locked, the only cushion for his fall is an approximately 0.47-cm give in the pads of his feet. Calculate the average force exerted on him by the ground during this 0.47 cm of travel. This average force is tufficient to cause damage to cartilage in the joints or to break bones.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter5: Energy

Section: Chapter Questions

Problem 67AP: (a) A 75-kg man steps out a window and falls (from rest) 1.0 m to a sidewalk. What is his speed just...

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