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Course: AP??/College Physics 1?>?Unit 3
Lesson 7: Applications of circular motion and gravitationApplications of circular motion and gravitation
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Problem
On a planet with no atmosphere and a mass twice that of Earth's, a rock falls off of a cliff. Beginning at an arbitrary time during free fall, the resulting vertical velocity of the rock as a function of time is shown in the graph.
Determine the radius of this planet in terms of Earth radii, .
Write your answer to two significant figures.
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