Starting from rest, a 31.4 kg child rides a 8.75 kg sled down a frictionless ski slope. At the bottom of the hill, her speed is 6.0 m/s. If the slope makes an angle of 13.1° with respect to the horizontal, how far along the hill did she slide on her sled?   distance=   m

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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.