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Momentum

5. A block of...

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5. A block of mass m 1kg, moving on a horizontal surface with speed u-2m/s enters a rough patch ranging fromto x-2.01m. The retarding force F on the block in this range is inversely proportional to x over thisx-0.10mrange.F = -K/x;0.1 x<2,01m-0 for x<0.1m and x>2.01mWhere K0.5J.What is the final kinetic energy and speed of v of the block as it crosses this patch

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