Actionscript 3 :: How To Create A Fake Throw Effect

I'm learning AS3 and I'm trying to build a little interaction where I can throw a square off the stage. It just need to stay on the x-axis, to be thrown either to the left or right.I found quite a few tutorials where it involves physics. I don't need anything as complicated as that. With mine, as long as you click down on the square and throw it a bit, doesn'tmatter how hard that throwing action is, the square will always be thrown off the stage, depending on the direction of your mouse.I kind of have the idea in my head that the "throw" feel can be done with tween in a movieclip (since it only need to go to either left or right), which will be activated depending on the direction of the mouse.