Homework Help: 9th grade -physical science

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 ?

9th grade -physical science - Draven, Wednesday, September 15, 2010 at 5:55pm
1.85x10-3 cm x 5.22 x10-2 cm in scientific notation
9th grade -physical science - jade johnson, Wednesday, January 18, 2012 at 9:08pm
gases in earth's atmosphere exert______________ on everything

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