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An earthball with a mass of 125 kg and a radius of 1.5 m rolls down...

An earthball with a mass of 125 kg and a radius of 1.5 m rolls down a regular hill. The hill is 60 meters high and inclined at 15 degrees to the vertical.

How fast is the ball moving at the bottom of the hill?

At the bottom of the hill is an ice covered ramp. The ball begins to go up the frictionless ice ramp. What is the maximum height up the ramp that the ball reaches?

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