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Physics 4 Online
OpenStudy (anonymous):

n a tractor-pull competition, a tractor applies a force of 1.3KN to the sled, which has mass 1.1* 10^4 Kg. At that point, the co-efficient of kinetic friction between the sled and the ground has increased to .80. What is the acceleration of the sled? Explain the significance of the sign of the acceleration.

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