1. The problem statement, all variables and given/known data A 50 kg is pushed across a floor by a constant horizontal force of 200 N. What is the force of friction? 2. Relevant equations Ffr = coeff*Fn 3. The attempt at a solution I'm not sure how to find it as I don't know the coefficient. The answer says the answer is 200 N, but I don't know why it's equal to the applied force. The problem didn't say it was being moved at a constant velocity, it only has a constant applied force.