Photo gallery: Trebuchet day at Boyd-Buchanan School

Carl Joseph Vonnoh IV works on his trebuchet "Sweet Trebuchet O' Mine" before participating in the 12th annual Physics Trebuchet Day at Boyd-Buchanan's David L. Boyd Field on Thursday, Oct. 19, in Chattanooga, Tenn. Nine teams of physics students from Boyd-Buchanan School used their trebuchet to launch softballs onto the football field.
Carl Joseph Vonnoh IV works on his trebuchet "Sweet Trebuchet O' Mine" before participating in the 12th annual Physics Trebuchet Day at Boyd-Buchanan's David L. Boyd Field on Thursday, Oct. 19, in Chattanooga, Tenn. Nine teams of physics students from Boyd-Buchanan School used their trebuchet to launch softballs onto the football field.

Nine teams of physics students from Boyd-Buchanan School used their trebuchet to launch softballs onto the football field.

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