Physics, 06.05.2021 18:10 ketabug50

A boy and his skateboard have a combined mass of 60kg. After an initial shove, the boy starts coasting at 5.5m/s along a lever driveway. Friction brings him to a stop in 5.0 s. If the combined force of gravity on the boy and skateboard is 590 N, what is the average coefficient of (rolling) friction between the driveway and the skateboard wheels?

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A boy and his skateboard have a combined mass of 60kg. After an initial shove, the boy starts coasti...