Creative Speculation
In reply to the discussion: Martin Sheen: 9/11 Questions 'Unanswered,' Building 7 'Very Suspicious' [View all]William Seger
(11,042 posts)... from the last reading on the the Flight Data Recorder: 465 knots = 535 MPH. That's in good agreement with multiple radar readings and estimates based on impact damage.
Whether or not a 757 has enough power accelerate to that velocity in level flight at 100 feet is moot, since as tomk52 pointed out, the plane was in a dive, and as all pilots and cyclists know, altitude is energy. There is simply no good reason to think that velocity is impossible or that a 757 would break up at that speed.
But the really silly thing about that claim is the apparent conclusion being advanced: If the 535 MPH number is wrong, then no plane hit the Pentagon? What do you get when you start with a dubious premise, toss out an important fact, and then apply absurd logic?
Speaking of which, what do you get when you base your conclusions on what you haven't seen in the photos you've looked at? Here's a composite photo which should help you identify where the engines hit:
You deleted the post I was replying to, but I believe you also stated that you thought the engine parts looked to small. We were just discussing that in another thread, and the answer is no, they are parts from a 757 engine: