You want to try the Spring Behavior.
Apply it to your layer or group, and then create an attractor object (any shape will do and hide it once you’ve made it) to create the centre point of the spring action.
(Make sure not to put your dummy object in a group that you are also applying the spring behavior to – it needs to be in a group of its own in that case otherwise you’ll get some weird behavior.)
Now place the object that you want to bounce at the top of the screen and it will be dragged down by the spring action and it will bounce around the attractor object. Increase the Spring Tension parameter as required.
To get the spring action to slow down progressively, add a Drag behavior on top of the Spring behavior.
Simon Ubsdell
tokyo productions
hawaiki