Hello all, love the forum! I've signed up here because I absolutely hate 9/11 conspiracy theories. I am currently arguing with a guy who is absolutely hung up on Flight 93's crash physics. As we know debris was buried in the crater, and also found above ground. This guy simply cannot get over the fact that debris was buried and fragmented. He thinks that either the plane should have fragmented when it hit the ground (but not buried), or I guess should have buried in whole parts?? I'm still not sure on that front, however he simply cannot see how a plane could fragment and still bury itself. If I understand his super-duper 9/11 truth logic, he thinks all the momentum would be gone when the plane hit the ground and parts could not have had any more momentum to carry them (especially aluminum parts) into the ground. Follow? He also annoyingly keeps citing Newton's 3rd law, but has yet to fully explain how Newton's third law applies. Northwest Airlines Flight 710 has also been pointed out to him repeatedly but he is sort of dancing around that one. I'm sure this has been explained before. Anyone have a link or explanation for how the plane fragmented and buried? Thanks!