I want to plot a projectile's path from A to B. This is to be used for AI actors to aim and fire at targets. The thing is, I don't understand the units used in gravity or linear damping. Obviously, I need to take both of these into account but are they pixels per frame/second/update, or some other measurement, entirely? Also, Flash seems to choke on any semi-serious math repeated in behaviors. Finally, there will (normally) be multiple viable paths for the projectile to take, so is it best to start with a launch velocity and calculate the curve from that?

If anyone can provide a working example of this type of targeting, I would really appreciate it.