Okay so if speed has no factor.
And g-force effect on the body is the fact that it is trying to stay still while the other object is speeding up.
And That this effect is lessened in 0G environments.
And that it is lessened even more when there is no way for lets say air to make drag, and de-pressurize the area.
And that A self contained environment, like the earth, can move at 490k mph and still make no effect on any thing in or on it, because of the gravity bubble effect.

Then why are we passing out in space, where yes there is little to no gravity, which an increase of speed makes drag with, which pulls you backwards, And a fully sealed environment, with its own gravity system inside of its self, which is also not falling to the earth, with what i hope is also i pressurized air system, where if there was a string in the air would not move back much if not at all.

I mean the air in such an environment wouldn't be moving around, would it even get more pressurized from the movement? I mean sure it would on earth just because our bodies are effected by gravity.

I am also not a scientist, and i am truly wondering why this is.

or is it just that while your body is speeding up to the speed of the ship it will be effected? because like the effect of throughing an apple while driving a car, the apple will stay the same speed until the drag from air slows it down.

and then if none of that is right how do shows like startreck and on explain it.

edit:

So the first part was answered the last question i have is, wouldn't g-forces lessen once your body, blood brain ect, speeds up with the ship, which would be in like 2 seconds because.
A. there is no drag on your body stopping/slowing you down unlike the out side of the ship.
B. if the ship stops wouldn't you fly through the window, just like in a car, becuase your body is still travling at the same speed the car was.

And so because of those 2 reasons wouldn't g-force stop happening once your body matches the speed of the ship.