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May 25, 2015

Homework Help: physics

Posted by nancy on Friday, March 18, 2011 at 12:47pm.

A racing dog is initially running at 20.0 , but is slowing down.
Q1. How fast is the dog moving when its kinetic energy has been reduced by half?
Q2. By what fraction has its kinetic energy been reduced when its speed has been reduced by half?

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