Currently, launching one kg of payload into orbit with SpaceX's Falcon 9 costs around 2400$/kg. Even after a 10x reduction, this will not be a economical viabl

Currently, launching one kg of payload into orbit with SpaceX's Falcon 9 costs around 2400$/kg. Even after a 10x reduction, this will not be a economical viable for garbage/battery disposal. Note however that Musk had apparently said he's aiming for 20$/kg - take that as you wish. Even then, I'm not sure whether it's economically feasible. In terms of slingshot or catapult type constructions, I recall that the main hurdle is that the payload usually doesn't survive the huge forces applied during the acceleration phase and rips apart. You have to accelerate the payload to about 40'000km/h for it to escape Earth's orbit.