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Mini-Quiz: Problems Caused by Friction

by Ron Kurtus (20 May 2016)

Take this Mini-Quiz to check your understanding of the lesson material.



1. What happens when friction is increased?

You need less energy to move an object

Materials slide easier

You need a greater force to move the object

2. How are materials heated through friction?

Energy lost from the friction turns to heat energy

Friction actually cools a material

By warming the materials before rubbing them together

3. How do objects wear out from adhesion friction?

Molecules are turned into adhesion atoms

Molecules can get torn loose from the material

Adhesion friction seldom occurs

If you got all three correct, you are on your way to becoming a Champion in Physics. If you had problems, you had better look over the material again.


Know why things happen


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Mini-Quiz: Problems Caused by Friction




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