The green square can be repositioned to set the center of the force that will eminate outward at the rate entered in the Speed box (px/s). The wave will have a starting intensity based on the value in the Intensity box (kg*px^2/s^2). The Drag field will control the deacceleration (px/s^s) of each box. This demo makes heavy use of the TimelineLite object to control the timing of the animation. You can step through the animation one "frame" at a time, run it in slow-motion, or use the slider control to move through the sequence. Please read my blog post for a detailed look at how this demo was created.