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A block of mass 2.60 kg is placed against a horizontal spring of constant k =...

A block of mass 2.60 kg is placed against a horizontal spring of constant k = 775 N/m and pushed so the spring compresses by 0.0800 m.

a) What is the elastic potential energy of the block-spring system (in J)?

b) If the block is now released and the surface is frictionless, calculate the block's speed (in m/s) after leaving the spring. (in m/s)

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