Sigh! Whether it hit the ground flat, nose high or like a dart in a flamin' dartboard, it's after the event that caused the ground impact. Whether the engines are 100 m in front of the aeroplane or 100 m behind it (I seem to recall a 757 going off the runway in Spain somewhere, where the engines went up and over the wing), it's after the event, a result of the impact, not the cause. All these physics formulae being bandied around about where the engines ended up tell us nothing about the event that initiated the chain to impact with the ground, they could have been flipped forward like tiddlywinks for all I care. In fact, given their position on the wing and a low forward airspeed and a high vertical component, they might well have been
I wanna know WHY it hit the ground, not HOW it hit the ground. All the important bits in this accident, except maybe survivability issues, are pre-impact, not post impact.