Supersonic Ping Pong Ball Cannon (Photos+VIDEO)

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“The fastest serve ever recorded by a ping-pong player moved at about 70 mph (113 km/h). Professor Mark French of Purdue University’s Mechanical Engineering Technology department and his graduate students, Craig Zehrung and Jim Stratton, have built an air gun for classroom demonstrations that fires a ping-pong ball at over Mach 1.2 (900 mph or 1,448 km/h). As the picture above shows, that’s fast enough for the hollow celluloid balls to blow a hole through a standard paddle.”

Next time someone says projectile velocity isn’t important, projectile mass is… show them this.

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