Suppose a box of mass m slides toward a spring with a speed of vii, presses 1.20
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Suppose a box of mass m slides toward a spring with a speed of vii, presses 1.20 mm into the spring, and then bounces away with a final speed of 17.0 m/s. Find the initial speed of the box. Take into account the work due to friction (kk = 0.5).Express your answer with the appropriate units.
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