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Starting from rest, a 1.20 kg block slides 1.50 m down a 40.0 inclined plane. If the speed of the block at the bottom

Starting from rest, a 1.20 kg block slides 1.50 m down a 40.0 inclined plane. If the speed of the block at the bottom is 2.21 m/s, find the work done by friction on the block.

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