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Reply #30: From Lared's post [View All]

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Home » Discuss » Topic Forums » September 11 Donate to DU
hack89 Donating Member (1000+ posts) Send PM | Profile | Ignore Thu Jul-21-05 10:34 PM
Response to Reply #29
30. From Lared's post
Edited on Thu Jul-21-05 10:34 PM by hack89
"The graph states the the second discrete floor is only under the influence of gravity or potential energy. This cannot be true because the momentum transfer from the first to the second must transfer kinetic energy creating a much higher initial velocity and far shorter fall time."

The point is simply that due to the great mass of the building above the impact zone there was tremendous KE that easily overcame any resistance the second floor might have. The floors were overwhelmed by the dynamic forces placed on them and collapsed with almost no resistance.
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