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The force F, acting in a constant direction on the 20-kg block, has a magnitude which varies with the position s of the block. Determine how far the block
slides before its velocity becomes 5 m/s. When s=0 the block is moving to the right at 2m/s. The coefficient of kinetic friction between the block and
surface is Mk= 0.3.
F (N)
F.
F = 50s?
-s (m)

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