>>>I would imagine though that a person can greatly increase terminal velocity by tucking in arms or by assuming a fetal position. <<<

If you wait until you are 3-4 feet above ground and quickly step down you can land safely no matter how high you started. I saw Bugs Bunny do it once.


>>> And GoPro terminal velocity is probably less than human terminal velocity. <<<

I think all things accelerate at same speed and hit the ground at the same time, no matter how heavy they are. Exception would be something like a feather or paper and obviously a parachute because drag becomes a factor. But cars, humans or a small cameras would fall at pretty much the same speed.