A spring with a spring constant k=440.0 N/m is attached to a mass of m=7 kg and stretched -0.5 m ?!?!?

A spring with a spring constant k=440.0 N/m is attached to a mass of m=7 kg and stretched -0.5 m from its equilibrium position and released.

What is the speed of the block when it is at the equilibrium position?

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