A boy in a wheelchair total mass 505 kg has speed 140 ms at, Physics

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A boy in a wheelchair total mass 505 kg has speed 140 ms at

Question: A boy in a wheelchair (total mass 50.5 kg) has speed 1.40 m/s at the crest of a slope 2.40 m high and 12.4 m long. At the bottom of the slope his speed is 6.50 m/s. Assume air resistance and rolling resistance can be modeled as a constant friction force of 41.0 N. Find the work he did in pushing forward on his wheels during the downhill ride.

Solve the above question and show each and every step of calculation.

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Physics: A boy in a wheelchair total mass 505 kg has speed 140 ms at

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