[momavujisic]

I'm not going to question you, because the plane did indeed have enough energy to the "flip". I'm just going to suggest things about the speed. The approach speed a 777 at 250km/h, is correct, that's 134 kts which is maybe a tad bit slower then what it should be. However, the NTSB confirmed today that the aircraft was significantly slower than that – which why the plane ended up coming up short and stalling. Furthermore there is at least a couple seconds of the plane skidding on the ground which would have slowed it yet even more before it did the "flip".

[Someone]

OK. Let me question myself, then :-) . Energy-wise, I still think it is easy to flip a plane in a crash. I would only call it cartwheeling if there were two flips in succession. That would be tight, as the impact on the ground after the first flip would be quite inelastic.

Also, for both flips, you would have to have the mass of the plane straight behind the pivot point. That is hard to achieve, as everybody who has done cartwheels will know (if not, imagine maiign a handstand on one hand with too much rotation that continues into a landing on one leg)