Posted by **Jamie** on Wednesday, June 8, 2011 at 10:28am.

4. An 800.0 kg roller coaster car is at rest at the top of a 95 m hill. It rolls down the first drop to a height of 31 m. When it travels to the top of the second hill, it is moving at 28 m/s. It then rolls down the second hill until it is at ground level.Calculate the kinetic and potential energy at the top and bottom of each hill

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