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The sledder shown inFigure 1starts from the top of a frictionless hill and slides down into the valley. Suppose that h1 = 4.5 m &h2 = 5.8 m ?

The sledder shown in (Figure 1) starts from the top of a frictionless hill and slides down into the valley. Suppose that h1 = 4.5 m and h2 = 5.8 m .

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