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Originally Posted by willravel
I think we can all agree that there was an original collapse that had nothing to do with another floor collapsing.
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guess again.
as I see it, a floor in close proximity to the crash (a bit above) collapsed due to all manner of things, the heat, the fire, the expansion of the horizontal girders (Thermal Expansion Is Real), ect, this collapse cause the floors above the impact to fall. as they impacted the floors below, they buckled, as seen in the pictures provided by will, however, each floor hit harder and harder because it was falling faster and faster, eventually this force was greater than what the floors below the impact could handle and they collapsed, after that it pancaked into its self.
I spoke with my physics professor (PHD) and he corrected me on the time for an impact of 2 rigid bodies, it is closer to a fraction of a ms, not 50 ms, so the forces felt by the falling weight onto will's shoulders would be on an about 100 times as strong. of course bending of wills legs to spread the impact out would allow him to catch it, however, buildings don’t have nice springy legs.