do you want to use physics? If so, try the Physics Control component - think of if as of predictable (somewhat determinate) physical motor. You provide target transforms and the physics engine will do the rest to get you there based on input variables.
or should it be a simple projectile that flies in an arc and returns? Use a spline and drive the projectile along it.
and for something truly simplistic, you could provide 3 target vectors describing a rough arc for the vInterpTo to arrive at
If you’re unfamiliar with working with splines, consider one of the many generic tutorials first, then find tuts about movement along a spline. If you get stuck applying it, do tell - any script showcasing the issues will be of great help.