Glitch99 wrote:And Google says you fall 1,000 ft in about 5.5 seconds, so given some liberties with what's considered height verses the fall, 2.5 seconds would "fit".
ok. not sure what Google told you about falling objects. Let's do a little math...
The force of gravity is 9.8 m/s(squared). That means that for every second you fall, your fall rate increases by a factor of 9.8 m/s. (32.15 feet per second) After the first second, you're falling at 32 feet per second... after the second second, you're falling at 64 feet per second... etc.
Fall time = square-root of ( 2 * height / 9.8 ).
Of course all of that doesn't take into account the factor of terminal velocity which is when your mass against air resistance evens out. (happens at roughly 120mph for a skydiver).
So, with a height of 500 feet (152.4 meters)
2*152.4 = 304.8
304.8 / 9.8 = 31.1020408...
squareroot of 31.1020408... = 5.57692...
... it will take 5.58 seconds to fall 500 feet.
I'll spare you the calculation but your speed when you hit the ground falling from 500 feet will be about 122 mph (not accounting for wind resistance of course).
incidentally, it will take 7.89 seconds to fall 1000 feet. (again not accounting for wind resistance.)
AND... a fall from 100 feet (30.5 meters) will take about 2.5 seconds. (again not accounting for wind resistance.)
Incidentally, terminal velocity for a 10000 pound roller coaster train is going to be a LOT higher than a man (around 300mph) so terminal velocity wouldn't really factor in for something that massive this close to the ground.