Have fun "cipherin".....

where
FD is the force of drag, which is by definition the force component in the direction of the flow velocity,[1] ρ is the mass density of the fluid, [2] v is the velocity of the object relative to the fluid, A is the reference area, and CD is the drag coefficient — a dimensionless constant related to the object's geometry and taking into account both skin friction and form drag.

Short of having a wind tunnel and some way of measuring resistance(like a spring scale....LOL!)I'm not sure what good this will do.Your going to have a few problems coming up with some numbers.

Look mom...I have a wind tunnel and a spring scale.....I'm ready to do some math.....should I get panniers or a trailer....let's find out.....