NIST never mentioned why there was no resistance from the below-the-impact zones. I understand that the portion above the impact zones were very heavy, but it just seems so odd that the portions above the impact zones (14 and 32 floors respectively) had enough momentum to crush both the towers ENTIRELY in 11 and 9 seconds respectively. Now if it is estimated that the free-fall speed at the height of the towers was about 9.22...then why did the towers fall in about that same time? Shouldn't the buildings have encountered more resistance? because it did have 47 core columns and 240 perimeter columns and had 93 and 77 floors of mass beneath the impact zones. Does this defy the law of momentum?
2007-03-10
12:16:04
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6 answers
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asked by
Anonymous
in
Physics