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2. A 12 kg block has a velocity of 4 m/sec to the right as it passes point A on a frictionless surface. It slides up to point B, then slides back past point A. To the left of point C, the surface has a coefficient of kinetic friction of 1/4. It finally comes to rest at point D. (a) What is the height h of point B? (b) What is its speed when it passes point A going to the left? (Justify your answer.) |← frictionless (c) How far to the left of point C does it come to rest?
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UN 2 2 0 2 a = 3.265m 2x 2.4S

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