Two 100 kg football players wearing regulation helmets collide helmet to helmet while each is moving directly

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Two 100 kg football players wearing regulation helmets collide helmet to helmet while each is moving directly at each other at 10.0 m/s and come to a near instantaneous (<1 millisecond) stop. The area of contact is 0.010 m2, and the helmets are each designed to provide a crumple zone of 0.025 m. What is the maximum stress exerted on each player?

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Exploring Engineering An Introduction to Engineering and Design

ISBN: 978-0123747235

2nd edition

Authors: Philip Kosky, George Wise, Robert Balmer, William Keat

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