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Mini-Quiz of Overview of the Force of Gravity by Ron Kurtus - Succeed in Understanding Physics. Also refer to physical science, Isaac Newton, Universal Gravitation, acceleration, mass, weight, Earth, Moon, planets, Sun, School for Champions. Copyright © Restrictions

Mini-Quiz: Overview of the Force of Gravity

by Ron Kurtus (revised 2 September 2010)

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

1. What is required for the gravity equation to apply?

There are no requirements, and it always applies

Objects must be relatively close to the Earth

There must be no air resistance

2. Does a piece of tissue and a ball fall at the same rate?

Yes, because everything falls at the same rate

Scientists aren't sure, because it has never been tried before

No, because air resistance slows down the tissue

3. Why would an object fall slower on the Moon?

Because the acceleration due to gravity on the Moon is less than on Earth

It would actually fall faster because there is no air resistance

Gravity from the Earth would slow it down

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.


Look toward the future


Resources and references

Author's Credentials

The following resources provide information on this subject:

Websites

Force of Gravity - Universe Today Magazine

Earth's gravity - Wikipedia

How does gravity work? - How Stuff Works

Standard gravity - Average value, as compared to variation due to position on Earth - Wikipedia

International Gravity Formula - Variation of gravity with distance from equator - Geophysics dept. University of Oklahoma

I feel 'lighter' when up a mountain but am I? - National Physics Laboratory FAQ

Gravity Resources

Books

Top-rated books on Simple Gravity Science

Top-rated books on Advanced Gravity Physics


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