A 500 ft drop results in a relative speed of 122 MPH
A .5" deceleration distance results in 12,000 G-force
A 1" deceleration distance results in 6,000 G-force
A 4" deceleration distance results in 1,666 G-force
A 6" deceleration distance results in 1,000 G-force
A 1 ft deceleration distance results in 500 G-force
A 2 ft deceleration distance results in 250 G-force
A 10 ft deceleration distance results in 50 G-force
A 100 ft deceleration distance results in 5 G-force

Summary: For example, what this is saying is that if the proper padding is used so as to uniformly stop a fall from 500 ft in a 6" distance, that the body falling would experience a force of 1000 times it's weight as it stops. To put this in simple terms. Stack 1000 bodies your same weight on top of yours, put them on a typical mattress and we have two problems. Your body at the bottom is probably crushed with broken bones and the mattress went flat a long time ago, offering no padding. All this would happen rapidly depending on the padding thickness or stopping distance "s". Yet the G-forces will be there. Now if one wanted to experience less than 5 G-force then expect to use over a 100 ft of padding on all sides. This becomes absurdly ridiculous.

Even "Jerking" at High Velocity can put Huge G Force on the Human Body. This is called Jerk(Physics)

Your avg Drag Racer pulls 5.7 Gs Jet Pilots pull much more. But stopping suddenly puts the Most~