Physics, 14.04.2021 21:00, baeethtsadia

Tommy pushes a 40 kg crate along a rough surface with 90N of force. He observes that it is only accelerating a a rate of 200 km/s. What must the value of the force of friction be? (Assume the only two forces acting on the
object are friction and Derek)

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Tommy pushes a 40 kg crate along a rough surface with 90N of force. He observes that it is only acce...