[Fubarable]

So xSpeed and xPos are easy to deal with since xSpeed is a constant and doesn't change with time.

ySpeed however changes continuously with time under the influence of gravity, and this will have to be dealt with. First your equation:

ySpeed = V * sin(A)

This only defines y's starting speed, that's it, and so you can only use this equation at the beginning of your calculations. Perhaps you should think of V * sin(A) as ySpeed0. So to do this correctly, you'd have this equation before the loop. something like so:

// pseudocode

double xSpeed = v * cos(angle)
double ySpeed = v * sin(angle)

loop incrementing time {
   xPos = xPos + xSpeed * time;
   yPos = yPos + ySpeed * time;

   ySpeed = ySpeed - gravity * time;
}