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September 3, 2015

Homework Help: physics

Posted by nancy on Monday, March 21, 2011 at 11:59pm.

A racing dog is initially running at 20.0 m/s, but is slowing down.
Question: How fast is the dog moving when its kinetic energy has been reduced by half?
Question: By what fraction has its kinetic energy been reduced when its speed has been reduced by half?

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