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A 200 kg sled is descending on a 34º inclined plane. The sled begins its descending...

A 200 kg sled is descending on a 34º inclined plane. The sled begins its descending with a velocity of 10 m/s. Between the sled and the plane there is a kinetic friction coefficient µ_κ = 0.2. If the sled finishes its descend with 70 m/s, at which height, the sled would have a 30 m/s velocity?

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