You also would have to take into account the ‘give’ factor in the U/C such as tires, the oleo components (if any) as well as the seat cushion/s etc when arriving in a somewhat normal attitude and the crumple factor of the airframe if going more vertical, none of these would come into play impacting the ground as a stand alone human body. The human body can take a lot of punishment but extreme blunt force trauma usually means it’s lights out, for good!