When an object is falling, the two main forces acting on it are weight close weightA force that acts on mass, pulling it down, due to gravity. Weight is a force and forces are measured in newtons (N).

Newton's Second Law states that force equals mass times acceleration. This can be investigated using a set-up like this one. You can use this set-up to investigate how changing two separate factors, ...

So in the interest of being a proper geek redneck, I want to make an air-powered version of my butane-powered golfball cannon. I use 2" thinwalled PVC for the barrel, which fits a regulation golf ball ...