Supersonic Ping Pong Ball Cannon Destroys Watermelon

Комплекс уроков “Электричество“ [club51080272|Проект “Научная Критика“] [club51080272|Вся правда о сверхъединичных устройствах] Cub Scouts shoot a ping pong ball at 880 mph (Mach ) using nothing but a vacuum and compressed air. We achieved 404 mph with nothing but a vacuum chamber. Adding compressed air with the vacuum chamber achieved supersonic speeds.