I guess your talking about the big bang.

as in any explosion there would be differences in the magnatude of the force that caused all the stuff to move outward , so no everything would not move at the same speed.'

I would think that the first stuff moved slower because there was more for the explosion to push.

the middle would have moved faster.

the last stuff would move even faster.

sort of an inverted ball.
3/4 inch of dust build up on the moon in 4.527 billion years,LOL and QM is fantasy science.