A 12 gauge shotgun to the temple, using slug.
Plunge at terminal velocity, so at least the height of 1,500 feet high. Remember free fall, meaning just your body go straight at terminal velocity down.
No, not with a chute. No, not like that airliner woman who crash out of the airplane but then got strap into the airplane wing cabin and land on deep snow. The airplane cabin broke apart carried her strap inside meaning the cabin absorb her fall, that NOT free fall. Free fall means you fall with just your body.
Yeah, you don't survive a 1,500+ feet free fall with nothing helping you.
I prefer the shotgun to my head though method though, I bet it be super quick, pull the trigger BAM, done.
But I chose jumping, because I want gravity to do it work. I do have a 2,000 feet height place to jump. A physicist told me, no way you can survive that if it free fall down, you be going 200km/h, even a metal car crash on the freeway you see how smash up it was, let alone your flesh and blood human body.
I believe it will be over quick, just picture you going 200km/h, BAM, straight down from 2,000 feet. Yeah, it be over so quick, after the BAM I bet all I see is blackout, and there come death.