Originally Posted by
gestrich19
Assuming a constantly-banked level turn:
The aircraft turns due to the horizontal force.
This is right. The rest, go back to the drawing board IMO. I would avoid discussing forces to explain rate and radius. First, you clearly don't understand what you are talking about. Apologies if that sounds harsh, I am only trying to be straight with you. Second, most students, even when explained forces by a teacher that has a thorough understanding of them, will still be lost.
Also:
It could be said that the direction of the relative wind is directly opposite the flight path.
Not it could be said, it is. Relative wind is parallel to, and directly opposite, the direction of flight.