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    Force applied to pushing a crate.

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    A 1000 newton crate is being pushed across a level floor at a constant speed by a force of 300 newtons at an angle of 20 degrees below the horizontal
    A-what is the coeffecient of kinetic friction between the crate and the floor.
    B-if the 300 newton force is instead of pulling the block at an angle of 20 degrees above the horizontal
    -What will be the acceleration of the crate assume that the coeffient of friction is the same as found in A.

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