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September 30, 2014

September 30, 2014

Posted by **Justin** on Sunday, October 8, 2006 at 3:36pm.

A 20.0 kg rock slides on a rough horizontal surface at 9.00 m/s and eventually stops due to friction. The coefficient of kinetic friction between the rock and the surface is 0.300.

What average thermal power is produced as the rock stops?

Answer expressed in W.

The work done is forcefriction*distance. Power is that work divided by time in seconds.

- Physics -
**susan**, Thursday, September 12, 2013 at 8:49pma steel ball rolls with constant velocity across a tabletop 0.95 m high. it rolls off and hits the ground 0.35 m from the edge of the table. how fast was the ball rolling

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