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Three sisters go skiing. Each has a mass of m = 50 kg. There are three different routes to the bottom. Route A: a constant slope of 3.81 degrees for 12,027 meters. Route B: a gentle slope of 1.83 degrees for 25,013 meters. Route C: a steep slope of 18.43 degrees for 2527 meters. Each sister takes one route, and each starts from rest at the top of the hill letting gravity do the work. Ignore friction.
(a) How much work does gravity do on each sister during the descent?
(b) How fast is each sister going when she reaches the bottom?
When you drop a rock into a well you hear the splash 1.0 seconds later. How deep is the well
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A ball on a porch rolls 44 cm to the porch's edge, drops 94 cm, continues rolling on the grass, What is the magnitude of the ball's net displacement
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