The coefficient of kinetic friction for a 21 −kg bobsled on a track is 0.10.   What force is required to push it down a 5.0 ∘∘ incline and achieve a speed of 60 km/h at the end of 75 mm? Express your answer using two significant figures.

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Static and Kinetic Friction

Kinetic friction comes into existence when there are moving surfaces means in other words we can say that the force which comes into existing between moving surfaces is known as kinetic friction.