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68. REASONING AND SOLUTION From Newton's second law and the equation: v = v 0 + at , we have 0 vv Fm am 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 t − − = × b. When the skier lets go of the tow rope and glides to a halt (
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This note was uploaded on 01/29/2010 for the course CALC 01:640:135 taught by Professor Soffer during the Spring '08 term at Rutgers.
- Spring '08