Grant
Honorary Master
It's the stop that kills - known as a rapid deceleration injury, often coupled with blunt chest trauma usually resulting in a transected aorta.You could even say reaching terminal velocity was what did it.
We jump and land on the ground all the time without dying, the problem is the amount of time/distance between the jumping and the landing that was problematic.
Given we live on a planet with gravity, it's the speed that kills.
A transected aorta requires an emergency thorocotomy - which in turn carries a 94% mortality rate