An Otherwise Trivial Mistake in Physics Derates this Film for Me

Rating: 6/10 (2 August 2006)

I do like Tom Hanks. He puts in a fine acting stint here, almost a tour de force.
But why don't movie-makers, especially Directors, take remedial classes in Basic Physics? Usually I am quite forgiving of trivial mistakes, but this one in "Cast Away" rather spoiled the entire film for me. As the doomed FedEx jet heads, in what appears to be a damned steep dive, into the Pacific Ocean, our hero is facing the cockpit, watching, through the pilot's window, the ocean's surface rapidly approaching. At impact, any non-secured object (e.g. our hero) would experience, with the plane's interior as our reference system, a tremendous acceleration FORWARD (basic Physics), i.e. towards the water. Yes, virtually instantly accelerated to maybe 125-150 mph, depending on how fast the jet was moving. This would quite quickly be followed by a similar DEceleration as this moving thing (our hero) hit some immovable object, e.g. the pilot's window, now buried in the water.
But these basic laws of Physics apparently do NOT apply to our hero; he gets propelled BACKWARDS, at a velocity that is definitely not death-dealing. All the other guys in the plane die, probably due to that instant acceleration / deceleration, but NOT our hero!
I tend to rate movies highly I can watch over and over again. I just can't watch this one more than once, at least until maybe a month goes by. Our hero's suffering is just too darned interminable...
*Sigh*