Cannon Shot Questions - Some Physics

[Halsafar]

Alright, I made a little diagram of the situation.
Now, this is suppose to be 3D, but the screeny is a 2D Example.

I understand the following:
- Calculate intial Force based on the yaw of the turret and the pitch of the cannon (angle and up angle).
- vV = vU + (vA * t); I can calculate the velocity and have it accelerate
- vGravity += (0,-9.81,) * Mass; Apply that to the velocity vV += vGravity;

Things I need explained:
- How to apply wind force? is wind force a vector? how come it is always explained in a scalar? do the weather channels take the magnitude of the wind vector?

- Will the simple accelerator and gravity application above cause the parabola effect as a cannon shot should.

- How do I calculate the terminal velocity and apply it? as in the velocity at which an object stop gaining downward speed (right?).

- Does wind resistance or gravity or both apply to acceleration force? or the current velocity?


Thanks in advance,
Halsafar