What happens when a ping pong ball moving at supersonic speed hits a paddle? Here’s a video explaining the physics of how a ping pong ball can be accelerated to supersonic speed along with some clips showing test shots.
swans on tea
Just another SFN Blogs site
Did you see this Dot Physics blog – same concept although only the subsonic version
http://www.wired.com/wiredscience/2012/10/super-fast-ping-pong-ball-gun/