I don't know about the passing out in the fall, but I did have a truly near fatal fall, and I will attest to the fact that I was left with only the memory before and a bit of the rush down and that actually had a very calm and dream like quality. Absolutely nothing after that for 4 days.
I have seen photos of folks falling from heights and they look damned scared, but I would suspect the experience is close to surreal, and that time may well seem to stop. The human body has a fair amount of 'shock insulation' built into it, and the pain usually only comes later, and the terror is probably largely cut off by the body focusing in on trying to survive. In the case of someone jumping off the WTC, there would be no pain on impact I am sure.
I extend to you my condolences and sympathies, but I do not find solace in the notion of doing more of the same unto others who had no real part in it.
Not to fear, there will absolutely be no innocent muslims taking headers out of 110 story buildings!.