I'm pretty sure I saw an animation option in the assembly mode. If applied to a part that would affect other parts due to the relations, I think you could simulate actions.
When I was playing with that there was no obvious collision detection (including detection of one part moving beyond the bounds of the part it's in relation to). So if you had a linear bearing on a rail, the relation between them would be in effect even after the bearing has been moved through the endstop and off the end of the rail.
That said, it's still being actively developed (I think it's run by one of the solidworks founders?) And there's been a number of improvements since I last played. It looks like you can script in any features it's lacking now too.