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2. A 61-kg skier, coasting down a hill that is at an angle of 23 to the horizontal, experiences a force of kinetic friction

2. A 61-kg skier, coasting down a hill that is at an angle of 23 to the horizontal, experiences a force of kinetic friction of magnitude 72 N. The skier's speed is 3.5 m/s near the top of the slope. Determine the speed after the skier has travelled 62 m downhill. Air resistance is negligible.

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