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The Great Pyramid of Khufu in Egypt used to have a height of 147 m and...

The Great Pyramid of Khufu in Egypt used to have a height of 147 m and sides that sloped at an angle of 52.0 degrees with respect to the ground. Stone blocks with masses of 1.37 x 10^4 kg were used to construct the pyramid. Suppose that a block with this mass at rest on top of the pyramid begins to slide down the side. Calculate the block's kinetic energy at ground level if the coefficient of kinetic friction is 0.45.

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