ch06-p082 - 82(a If the skier covers a distance L during...

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82. (a) If the skier covers a distance L during time t with zero initial speed and a constant acceleration a , then L = at 2 /2, which gives the acceleration a 1 for the first (old) pair of skis: a L t 1 1 2 2 2 2 2 200 61 011 == = m s m/s b g b g . . (b) The acceleration a 2 for the second (new) pair is a L t 2 2 2 2 2 2 2 200 42 023 = m s bg b g .. (c) The net force along the slope acting on the skier of mass m is Fm g f m g m a kk
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