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主题:【原创】台北101阻尼器 -- 長禾

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家园 911 airplanes did penetrate

due to their speeds.

It is estimated that the power of

the plane&fuel is around 1000 ton TNT.

http://zh.wikipedia.org/wiki/%E5%8F%B0%E5%8C%97101

101 building height is 450 m at

101 celling. This TMD is about 90%

of that hight, around 400 m.

The max speed without considering the

air drag is 90m/s. The airplane speed

can be nearly 3 time of it. A fully

loaded 767 is nearly 1/5 or more of

weight of this ball. SO the pure

kinetic energy is larger than this

ball after falling all 400m. Plus up

to 50 tons of fuel burning and

exploding.

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