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confusedbyphysics

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"A box is given a push so that it slides across the floor. How far will it go given that the coefficient of kinetic friction is .20 and the push imparts an initial speed of 4.0 m/s?"

It does not seem like there is enough information. Friction Force(kinetic) = .20 X Force (Normal). The normal force is mass X force of gravity. But there is no mass given so I can't figure that out. I don't know the time so I don't know what to do with the velocity to get it to accelecration. I'm so lost. Please help me, thank you so much for ANY help!