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4. A 2.0 kg block is pulled across a horizontal surface by a 15 N force at a constant velocity. a. What is the net

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4. A 2.0 kg block is pulled across a horizontal surface by a 15 N force at a constant velocity. a. What is the net force acting on the block? b. What is the force of friction acting on the block? c. What is the coefficient of friction between the block and the surface

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