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A 200g hockey puck is launched up a metal ramp that is inclined at a 30° angle. The coefficients of static and kinetic friction between the puck and the ramp are Us= 0.40 and Uk = 0.30, and the puck's initial velocity at the base is 3.8m/s parallel to the sloping surface of the ramp. What speed does the puck have when it slides back down to its starting point?

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