A boy and his skateboard have a mass of 50 kg. The boy descends a slope...

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A boy and his skateboard have a mass of 50 kg. The boy descends a slope inclined at 12° to the horizontal starting from rest. At the bottom of the incline, the ground becomes horizontal for 10 m before rising at 8° to the horizontal. The boy travels 30 m up the inclined before coming to rest again. By modeling the boy and the skateboard as a particle, find the distance the boy traveled down the slope knowing that throughout the motion, the boy is subject to a constant resistance of 20 N. A boy and his skateboard have a mass of 50 kg. The boy descends a slope inclined at 12° to the horizontal starting from rest. At the bottom of the incline, the ground becomes horizontal for 10 m before rising at 8° to the horizontal. The boy travels 30 m up the inclined before coming to rest again. By modeling the boy and the skateboard as a particle, find the distance the boy traveled down the slope knowing that throughout the motion, the boy is subject to a constant resistance of 20 N.

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