A block is sliding on a rough horizontal surface with a speed of

PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

A 2 kg2\,\text{kg} block is sliding on a rough horizontal surface with a speed of 6 m s−16\,\text{m\,s}^{-1}. The coefficient of kinetic friction between the block and the surface is 0.200.20. After moving 4 m4\,\text{m} on the horizontal surface, the block ascends a smooth (frictionless) incline and finally comes to rest. Calculate the vertical height risen by the block on the incline. Take g=10 m s−2g = 10\,\text{m\,s}^{-2}. (a) 1.8 m1.8\,\text{m} (b) 1.6 m1.6\,\text{m} (c) 1.0 m1.0\,\text{m} (d) 2.6 m2.6\,\text{m}

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