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I need help with Conservation Laws!

 
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Sep19-05, 02:54 PM   #1
 

I need help with Conservation Laws!

The question I'm doing for homework that I can't get is...

A spring is compressed 10.0 cm by an average force of 50.0 N. If the spring shoots a 20.0 g pebble straight up into the air, how high will it rise?

It would be sooper awesome if you could help with this![COLOR=DarkSlateBlue]
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Sep19-05, 03:08 PM   #2
 
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Where did you get stuck? Show your work to get help. (Hint: Spring PE gets transformed to Gravitational PE.)
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