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ex01 - Midterm 1 There are three problems worth 33 points...

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Midterm 1 There are three problems, worth 33 points each. You must justify your answer to receive full credit. 1. Two planets of mass m and 2 m have the same radius R . They start at rest with their centers a distance r i apart ( r i > 2 R ). The gravitational attraction between the planets then brings them together, and they collide. What is the speed of each planet just before they collide?
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2. An inclined plane makes an angle θ with the horizontal. A spring with unstretched length 0 used to launch a block of mass m up the inclined plane. The spring is compressed until it has a length i and then the block is released from rest. There is a constant frictional force f between the block and the plane. The maximum vertical
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ex01 - Midterm 1 There are three problems worth 33 points...

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