Quoting flying_ted:
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I am an engineer and I think you are wrong Mark.
Assuming the plane is coming down at 1700 ft/min or 520m/sec and if we assume it starts to decelerate 0.75m from the ground then I calculate you experience 5G (or a deceleration rate of 50m/s/s). I base the 0.75m on a rough estimate of the distance between ground and bottom for cockpit. For the individuals concerned it would be a little less as they have an extra 0.3m of seat slowing them up. Either way it is quite survivable.
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Probably you meant 520m/min. Or 8.64 m/sec