physics
posted by andrea .
A block slides a distance d down a frictionless plane and then comes to a stop after sliding a distance s across a rough horizontal plane.
What fraction of the distance s does the block slide before its speed is reduced to onethird of the maximum speed it had at the bottom of the ramp?
A. s/3
B. 2s/3
C. s/9
D. 8s/9
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