Originally Posted by
brandtzag 
Flintstone:
Perhaps you would kindly explain "kinetic" energy an why the engines, if moving at the same speed as the airframe, suddenly appears ahead.
There are several things that would cause the enginies to be forward of the rest of the wreckage:
1. There is a centrifugal force effect that would cause the engines to be hurled forward. See post #739. High ROD with a nose high attitude at impact would cause the fuselage to rotate such that the engines move through an arc as the pitch up angle rapidly goes to zero after the tail hits the ground but before the nose hits the ground. This motion is something like a hammer swinging. If the head disconnects on impact it will move in the direction that the handle points.
2, The 41 section appears to have dug into the soft ground causing the fwd fuselage to decelerate more rapidly than the 43 Section behind it, and the engines that appear to have remained above the ground.
3. The main gears and nose gear may have penetrated the ground, at least partially, retarding the main weckage from moving as easily as the detached engines.
As far as alignment goes, the main wreckage is twisted a bit due to the effect of the seperate parts having differnet rates of decleration due to appendages such as the landing gear and open wheel wells that may have dug into soft earth.