I have to tie the construction and dynamics of a potato gun with one chapter from my physics book. That's fairly hard to do because a potato gun has much to do with more than one chapter, but my teacher just wants one... Does anybody have an idea on what the best chapter would be? I have included a list of chapters that deal with mechanics below: Projectile Motion Newton's 1st Law of Motion: Inertia Newtons 2nd Law of Motion: Force and Acceleration Newton's 3rd Law of Motioin: Action and Reaction Momentum Energy The physics behind the potato gun lies in principles in all chapters, and I'm having a difficult time choosing the "best" one... Does anybody have an idea on which subject may have the most to do with a potato gun? I will appreciate any help. Thank you.