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# Quiz2 - 7A-C/D Win 09 Quiz 2 DL Sec Last 6 digits ID...

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7A-C/D Win 09 Quiz 2 DL Sec Last 6 digits ID # Name (Last, First) Grade 1. A skier begins sliding down a hill from an initial stop at a height of 30 m. a) If we ignore any air resistance or friction from the snow, how fast would the skier be moving when she reaches a height of 20 m? Justify fully your answer. b) In a more realistic problem, we can't ignore friction. Suppose the skier has reached 10 m/s speed at a height of 20 m, and still is traveling 10 m/s at the bottom of the hill. Write down (and explain how you got it) an energy conservation equation describing the skier's path from 20 m to the bottom of the hill.
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