Because you ride in it, and they are expensive.
Wing will give stability to the aircraft . This gives a lift to the airplane
The location of the CG with respect to the center of lift.
Explain the need for carrier frequency stability in radio transmitters?
A paper airplane's shape matters when considering speed, stability, effectiveness and efficiency.
Courtland Davis Perkins has written: 'Airplane performance, stability and control'
Windsor L Sherman has written: 'Airplane stability calculations with a card programmable pocket calculator' -- subject(s): Mathematical models, Stability of airplanes
The first influential part on a plane helps in stability is the fuselage. The second part is the vertical tail. It's also said that the empennage is an important part as well.
Dihedral is the angle between the mounted position of the wings and the horizontal axis. A dihedral allows better in flight stability.
A single person can build an airplane.
You don't need a degree, you need a license.
Just adding weight will not make a paper airplane fly farther. However, adding weight in exactly the right places can make it fly farther, by improving its balance and stability.