Thanks Max, will give this a go, thank you very much for taking the time to reply.
What I am trying to achieve is, say for eg in my cinematic, the hero moves forward and some rocks fall down in front of him, I want to trigger or keyframe this, this is for a movie, not gameplay, so if I check use physics, then I PIE, the rock falls really nice but when playing my shot 1 in sequence for e.g., then nothing happens?
I could of course animate the rocks, but if there is a lot of them and also using the physics makes it look and fall more naturally.