# physics

A student places her 500 g physics book on a frictionless table. She pushes the book
against a spring, compressing the spring by 4.0 cm, then releases the book. What is the
book’s speed as it slides away? The spring constant is 1250 N/m.
1

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1. book KineticEnergy=Max PE of spring
1/2 m v^2=1/2 k x^2

x= .04m, m=1/2 kg
solve for velocity v

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bobpursley

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