Reply #66: It is for free fall in a vacuum.

[Make7]

I am not vouching for the accuracy of any data in that graph (other than the free fall line which I added). The source had compared their calculated velocity data to the velocity of a free fall under only the acceleration of gravity, therefore I added that line to visually represent what was being compared.

Since you seem to be aware of how much of a factor air resistance would be, it would be helpful to the discussion if you could either plot a curve on that graph, make your own graph, or post the velocity data for the first few seconds of the collapse. It seems to me that there should probably still be a significant difference between measured fall velocities and theoretical free fall times in the earth's atmosphere, but I guess we'll see what the graph looks like with your numbers included.

- Make7