A toboggan starts from rest on parliament hill which is 5.0 m above road level. The toboggan slides down the frictionless hill, then crosses an 7.0 m patch of level asphalt on which the coefficient of friction is 0.50. What is the speed of the toboggan after it crosses the road?

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A: Work done W = 2.05 × 10-3J Potential difference VA- VB = 40.9 V

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