Quote:
Originally Posted by Smittie61984
You're right except that in free fall in a vacuum where you have absolutely no forces acting on your at all the molecules in your body are going to fall at the same rate as yoru space suit or as if you were made out of solid steel. Everything falls at the same rate in a vacuum. If for some magical reason your stomach fell at say 9.80 meters per second per second and the rest of your body fell at 9.81 meters per second per second then you'd feel your stomach because your stomach would exert a force against your nerves which are trying to travel at a different velocity.
When you jump out of an airplane you are immediately subject to the affects of air resistance and pressure, like it or not. So in a sense, inside your body your guts want to fall at 9.81m/ss but due to air resistance you are actually falling at 9.70m/ss. Because of that you have a net Force and no matter how small a force, something with mass will experience acceleration.
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This right here makes sense.
As for your vector post with arrows & shit, I only comprehended the first two-thirds of it. Sorry.
But this post right here makes sense.
So, I can see how air resistance would cause a difference in acceleration between your body and your guts, until terminal velocity is reached.
I would still argue that the initial shift from weighted to weightlessness is something anyone could feel, because as soon as you step off that platform, suddenly there is no force being exerted on your feet, knees, hips, back, neck, etc. Of course, that feeling would probably cease after a split second, so maybe Felix chose not to bother mentioning it, because it was so trivial when compared to the lack of freefalling sensation caused by the lack of air pressure.