Daily Press file photo
Members of Greg Libby’s physics class tested their homemade catapults in the Escanaba Area High School gym just prior to Christmas break in 1994. The hands on trajectory test is an annual feature of Libby’s course.
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Daily Press file photo
Members of Greg Libby's physics class tested their homemade catapults in the Escanaba Area High School gym just prior to Christmas break in 1994. The hands on trajectory test is an annual feature of Libby's course.
