Experimental tests have shown that bone will rupture if it is subjected to a force density of 1.00x108 N/m? . Suppose a 69.0 kg person carelessly roller-skates into an overhead metal beam that hits his forehead and completely stops his forward motion. Part A If the area of contact with the person's forehead is 1.50 cm? , what is the greatest speed with which he can hit the wall without breaking any bone if his head is in contact with the beam for 9.00 ms ?

Experimental tests have shown that bone will rupture if it is subjected to a force density of 1.00x108 N/m? . Suppose a 69.0 kg person carelessly roller-skates into an overhead metal beam that hits his forehead and completely stops his forward motion. Part A If the area of contact with the person's forehead is 1.50 cm? , what is the greatest speed with which he can hit the wall without breaking any bone if his head is in contact with the beam for 9.00 ms ?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Mechanical Properties of Solids

There are three types of matter- solid, liquid and gas. Out of them, solids have a rigid shaped and size. The intermolecular forces of attractions in solids are greatest. Mechanical properties are the physical properties of a material which it shows, when it is provided with certain amount of force or load. These properties are to be kept in mind for various purposes. When a force is applied to an object, the object may or may not get deformed depending upon its elastic property. But every time the object develops a restoring force against the force applied. This is commonly known as stress. If the object changes its dimensions due to the force applied it develops strain ( which is the ratio of change in dimension to the original dimension).

Question

Experimental tests have shown that bone will rupture if it
is subjected to a force density of 1.00x108 N/m².
Suppose a 69.0 kg person carelessly roller-skates into an
overhead metal beam that hits his forehead and
completely stops his forward motion.
Part A
If the area of contact with the person's forehead is 1.50
cm? , what is the greatest speed with which he can hit
the wall without breaking any bone if his head is in
contact with the beam for 9.00 ms ?
ΑΣφ
?

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