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A skier starts down a 28 ∘ slope. After a vertical drop of 35 m ,...

A skier starts down a 28 ∘ slope. After a vertical drop of 35 m , the slope temporarily levels out and then drops at 18 ∘ an additional 40 m vertically before leveling out again. The coefficient of kinetic friction on both slopes is 0.15, the level stretches is frictionless.

a)What is the skier's speed on the higher level stretch?

b)What is the skier's speed on the lower level stretch?

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