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Q. A 21.0-kg sled is being pulled across a horizontal surface at a constant velocity. The pulling force has a magnitude of 80.5 N and is directed at an angle of 30.0° above the horizontal. Determine the coefficient of kinetic friction.

Q. Calculate the work done on the tool by if the tool is first moved out along the x-axis to the point 3.45 , and then moved parallel to the y-axis to 3.45 , 3.45.

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Category:- Physics
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