posted on Mar, 7 2007 @ 12:10 AM
Okay, if you're talking about how fast can you move an object through a tube with pressure behind it, you will of course be using that pressure as
your driving force... then you have to take into account the coefficient of friction of the object against the walls of the tube, and the pressure
ahead of the object in the tube.
If you're talking about a fixed force acting on the object and how much the pressure will cause decelleration, you will again have to find the
coeficient of friction, only this time for the objects skin against air molecules that close together... from that you can find how fast you can move
the object with different forces acting upon it...
We really need an example of this to know what youre asking here.