I am in a disagreement with someone on another forum. There is wheel with a freewheeling hub constrained to roll on a particular surface by applying force to the hub in the horizontal x direction. This person claims the tangential force applied to a wheel from the surface will also act on the center mass or fulcrum in the -x direction. We both agree that friction acts against forward motion in the -x direction but my position is that this is the only force acting against it, the rolling resistance which is a constant for the type of wheel and is a limited finite value and independent of the acceleration of the wheel. He is trying to tell me that acceleration will increase the amount of force in the -x vector. Who is correct?