Posted by **robbie** on Monday, May 3, 2010 at 4:32pm.

a the top of a hill a rollercoaster has 67,500j of kinetic energy and 290,000j of potential energy. gradually the roller coaster comes to a stop due to friction. if the roller coaster has 30,000j of potential energy when it stops, how much heat energy is generated by friction from the top of the hill until ot stops ?

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