Flash CS3 Tutorial
How to Break Object into Multiple Pieces in Flash
Exploding your objects can create visual fireworks in the animation. The base object is broken into several pieces and shot across the stage.
Add a rectangular object to the workspace with the Rectangle tool (r key).
With the rectangle selected, choose Insert > Timeline Effects > Effects > Explode.
In the dialog box, input values for the Effect Duration and Direction of Explosion.
Click the Update Preview button to see the changes before accepting the animation.
You can adjust the Arc Size and Rotation of Fragments.
The Fragment Size and Alpha can also be set.
Once you are satisfied, click OK. A new graphic symbol is added to the workspace.