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October 26, 2014

Homework Help: physics

Posted by Kinetic Energy #2 on Friday, February 4, 2011 at 3:16am.

In compressing the spring in a toy dart gun, 0.5 J of work is done.
When the gun is fired, the spring gives its potential energy to a dart with a mass of
0.02 kg.
(a) What is the dartís kinetic energy as it leaves the gun?
(b) What is the dart speed?

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