Best way to physics collision

What would be the best approach, to create collision triggered collapse, of physics objects.

In other term, what I'd like to do, is : When the player does the hit animation, and hits a stack of boxes, these boxes react to the angle from whichthey were hit, and fall down.

So far I've been able to get boxes that fell according to the gravity value in the scene, but whenever the player interacts with them they are solid, and cannot be moved.

Will this require heavy JS scripting ? And if so, could anyone point me towards an efficient way to understand how to get it done ? I have basics in scripting with gamemake, actionscript and other object oriented languages. Any help will beappreciated.

Thanks !

• Igor