17.) Ejection Seat
This semitrailer-mounted slingshot launches riders 200 ft. Into the air at a speed of 60 mph. The two-seat pod in which passenger’s sit is held to the base of the machine by an enormous magnet. After the elastic ropes pulled tight, the conductor releases the attraction, blasting the pod toward the sky. Technical Park, the manufacturer of this particular reverse bungee, says on its website that the Ejection Seat subjects riders to 4.8 gs.