Paper airplanes are effected by aerodynamics just as anything else in the air is. Drag is encountered, and air resistance is related to this.
A Lot
American footballs and Rugby balls are both considered 'balls' but neither are spheres.
A lot
They do not necessarily have pentagons. See for example, the brazuca, the official football design for the 2014 World Cup.
no, nfl footballs are a little larger than ncaa footballs
Aerodynamics
footballs aren't green, they are usually brown.
yes
footballs are kept at 71o F
Blue footballs or xanex are .5 mg
aerodynamics can be tested by a wind tunnel
the aerodynamics is the stupid answer that no one knows
Super Bowl footballs are made of the same leather that is used on the regular season footballs.
The footballs are not that expansive ,but there are all different prices depends where you buy them.
T90 size 5 nike footballs
internal aerodynamics and external aerodynamics. internal is related to flow of ducts and external to going away from the bodies.