1. The problem statement, all variables and given/known data A man is exerting a force of 200 N on a refrigerator and pushing the fridge across a rough floor at a constant velocity to the right. How much friction force acts on the refrigerator ? Give a number and appropriate units. 2. Relevant equations none 3. The attempt at a solution I think that the friction force exerted by the floor would be equal to the man's exerted force on the refrigerator, but at the same time I know that the force exerted by the man and the friction force exerted by the floor are not an action/reaction pair, so I am not sure that they would be equal.