Circular Motion Answers

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The formula v2 = G is very useful for astronomers because it does not require them to know T. What does T stand for?

orbital period

tangential speed

satellite radius

Use the following information about Earth and its moon to determine the distance between them.

4.6 × 106 m

3.8 × 108 m

3.9 × 1011 m

What is the only force that acts on an object in free fall?

centripetal

friction

gravity

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