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A constant horizontal force of 9 N pushes a 25 kg-mass through a medium that resists its motion with 0.9 N for every m/s

A constant horizontal force of 9 N pushes a 25 kg-mass through a medium that resists its motion with 0.9 N for every m/s of speed. The initial velocity of the mass is 10 m/s in the direction opposite to the direction of the applied force. Find the velocity of the mass after 30 seconds. 5.2663 m/s

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