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prob_068 - 68 REASONING AND SOLUTION From Newton's second...

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68. REASONING AND SOLUTION From Newton's second law and the equation: v = v 0 + at , we have 0 v v F ma m t = = a. When the skier accelerates from rest ( v 0 = 0 m/s) to a speed of 11 m/s in 8.0 s, the required net force is 2 0 (11 m/s) 0 m/s (73 kg) 1.0 10 N 8.0 s v v F m t = = = × b. When the skier lets go of the tow rope and glides to a halt (
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