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Mini-Quiz: External Force and Sliding Kinetic Friction

by Ron Kurtus (17 November 2016)

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



1. What happens if you keep the same external force used to start the object sliding?

No one is sure, since it never has been tried

You cannot keep the same external force

The object accelerates

2. How do you an object to slide at a constant velocity?

Make the external force from pushing equal to the kinetic sliding friction force

Stop pushing the object

Push as hard as you can

3. When does a moving object stop?

When the external force is greater than the friction force

When its velocity is zero

When the external force equals the friction force

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.


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Mini-Quiz: External Force and Sliding Kinetic Friction




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