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brnnpink4
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Homework Statement
a .4 kg mass compresses a spring of .2m. The spring constant is 400n/m How fast is the mass moving after the mass is released and the spring uncompresses? If the mass is going up a .5m hill, how fast is it going?
Homework Equations
PE+KE=w
PE=mgh
KE=.5mv^2
The Attempt at a Solution
PE=.5(9.8)(x)