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Use the following information to answer the next question After performing a trick above the rim of a skateboard ramp, a 56 kg skateboarder lands on the ramp 3.5 m above ground level with a downward velocity of 4.0 m/s. Friction in the wheels of the skateboard and air resistance causes a loss of 9.0 x 102 J of mechanical energy. V = 4.0 m/s 3.5 m 12. The skateboarder's speed at the bottom of the ramp will be 6.0 m/s