Re: If someone falls off a building do they die before they hit the ground?

No, he will not.
That sort of "free fall" is similar, considering the speed, to a classical 
free fall when you practice parachute jumping.
The maximum speed is around 200 km/h, wich is 120 mph. At that speed, you 
do not risk asphyxia or repiratory injury.
The death will therefore be related to the body hitting the ground.....

By the way, a little joke: two Americans and a foreigner visit New York. The 
first American tell the foreigner that if he falls from the top of one of 
the twin towers of the world trade center, he will reach the ground with no 
damage, because of an accurate design, taking into account the vortex 
created by the vicinity of the towers. The foreigner remains suspicious, so 
the American boards the lift, goes to the roof, jumps over the barrier, and 
lands safely one minute later. "Incredible, I want to try it myself !" The 
foreigner follows the same path, jumps, and Craaaaaaaaaashes on the 
pavement. The second American says to the first: "Superman, this is a 
stupid joke, I told you previously."

Luc

Luc Ronchi
Ped Anesthesia
Hopital de Saint Nazaire, France