13. A skier, mass m=75kg, accelerates down along the slope at the initial velocity of vo=2m/s, the inclination of the sl
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13. A skier, mass m=75kg, accelerates down along the slope at the initial velocity of vo=2m/s, the inclination of the sl
13. A skier, mass m=75kg, accelerates down along the slope at the initial velocity of vo=2m/s, the inclination of the slope is O=30°, and the distance of sliding down in t=5s is x=60m. Find the net friction (sum of air and ground friction) subjected to the skier. AL mg
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