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Mini-Quiz of Gravity and Newton's Cannon by Ron Kurtus - Succeed in Understanding Physics. Also refer to Isaac Newton, thought experiment, cannonball, mountain, elliptical, circular orbit, escape velocity, physical science, School for Champions. Copyright © Restrictions

Mini-Quiz: Gravity and Newton's Cannon

by Ron Kurtus (revised 7 March 2011)

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

1. Would Newton's Cannon have similar results on the Moon?

No, because the Moon has no gravity

It depends if a rocket could bring a cannon up to the Moon

Yes, except you use different values of g and R

2. How would Newton increase the radius of the circular orbit?

Shoot the cannonball from a higher mountain

Shoot the cannonball straight up

There is only one possible radius

3. How could a cannonball possibly fly off into space?

Newton had some magical powers

This is a thought experiment that follows laws of Physics

A very small cannonball would be necessary

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.


Imagination is great


Resources and references

Author's Credentials

The following resources provide information on this subject:

Websites

Newton's Cannonball - Wikipedia

Flash animation - http://waowen.screaming.net/revision/force&motion/ncananim.htm

Acceleration due to Gravity Calculations - from Western Washington University

Gravity Resources

Books

Top-rated books on Simple Gravity Science

Top-rated books on Advanced Gravity Physics


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