Having had success using a student constructed catapult last year in my physics classes in demonstrating the principles and mathematics of projectile motion, I was ready to repeat the experience, when a student reminded me of a cannon I made when I was younger.
Iowa Science Teachers Journal
© Copyright 1976 by the Iowa Academy of Science
Sweedy, Peter H.
Iowa Science Teachers Journal: Vol. 13
, Article 2.
Available at: https://scholarworks.uni.edu/istj/vol13/iss1/2