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Mini-Quiz: Newton's Cradle

by Ron Kurtus (revised 6 August 2013)

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



1. If you release four balls in Newton's Cradle, how many will move on the other end?

One ball at four times the initial velocity

Four balls at the same velocity of the initial balls

You not are allowed to release four balls

2. What would happen if each ball was held by only one wire?

The wire would break because of the weight of the ball

The balls might move in various directions

The name would have to be changed to Newton's Pendulums

3. Why won't the balls bounce forever?

Energy is lost due to friction and absorption

They do, if you swing them hard enough

Energy is lost due to the Conservation of Momentum

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.


Be observant


Resources and references

Ron Kurtus' Credentials

Websites

Newton's Cradle - by Donald Simanek, Lock Haven University

Newton's cradle - Wikipedia

How Newton’s Cradles Work - HowStuffWorks.com

Conservation of Momentum - Mathematical explanation from the University of Winnipeg, Canada

Physics Resources

Books

Top-rated books on Pendulums

Top-rated books on the Physics of Motion


Questions and comments

Do you have any questions, comments, or opinions on this subject? If so, send an email with your feedback. I will try to get back to you as soon as possible.


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