Because you ride in it, and they are expensive.
gouse
The length of an airplane's wings affects its range more than the length of its fuselage. The length of the fuselage has more to do with handling characteristics and aircraft stability. The longer the fuselage, the smaller the necessary volume of the tail surfaces (weight [force] x arm = moment).
Wing will give stability to the aircraft . This gives a lift to the airplane
The longitudinal stability of an airplane is primarily determined by the location of the center of gravity (CG) in relation to the aerodynamic center of the wing. If the CG is in front of the aerodynamic center, the airplane tends to be stable. If the CG is too far behind the aerodynamic center, the airplane can become unstable. Pilots use the elevator control surface to adjust the pitch and maintain longitudinal stability.
There is no such large airplane so far and such large ones will be necessary and impossible
That would be the air pushing against the airplane's wings.
A paper airplane's shape matters when considering speed, stability, effectiveness and efficiency.
Courtland Davis Perkins has written: 'Airplane performance, stability and control'
Yes, it is necessary to use a FAA approved child restraint system or safety seat when traveling with a child on an airplane for their safety.
An airplane uses engines to generate thrust, which propels it forward. The engines work to overcome the drag force that resists the airplane's forward motion, allowing it to achieve the necessary airspeed for flight. This is necessary to create the lift that keeps the airplane airborne.
Stability
Windsor L Sherman has written: 'Airplane stability calculations with a card programmable pocket calculator' -- subject(s): Mathematical models, Stability of airplanes