in case you are worried about living in only three special dimensions.... you maybe happy to find out there are at least 4 more special dimensions including time.....
There is no g force in space rapid or even hyper warp speed acceleration science fiction movies but in reality its a huge problem. say you get up to the speed of light in a space ship how do you brake it? if you get up to that speed you can step off of your space ship on to a planet going that same speed or beam yourself down maybe even....so you put a thruster in the tip of your spaceship to slow down and that with the speed of light momentum you already have crushes your spaceship like an accordion as if it hit a wall.....so you think that there are only 3 dimensions before you get to time? Heck no. your sustained momentum without acceleration is a dimension/ dimensioning process and add to that acceleration in going faster or braking and you have yet another dimension. It is pretty obvious to me. I am concerned about parts of atoms that get dragged along some more than others. the outermost electron in atoms can act with acceleration just like a person without a seat belt in an automobile. the more locked in the subatomic particles are the less probability of flying off there is with acceleration deceleration. Its all getting towards one of my new laws of physics....it should not be new but than no one else seems to realize these are dimensions. if time is the 4th probability is the 5th . momentum is 6th and 7 is acceleration/ deceleration. I am not sure If I need a revision or not.