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A skier starts from rest at the top of a 45. m high hill (point A), skis down a 30.º incline into a valley, and continues up a 35. m hill (point B). Both hill heights are measured from the valley floor. Assume you can neglect friction and the effect of the ski poles.
a.) How fast is the skier moving at the bottom of the valley?
b.) What is the skier's speed at the top of the next hill?
The velocity of the bal
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