* Air resistance is not a fundamental limit: Air resistance is a force that depends on the shape, size, and speed of the object, as well as the density of the air. It is not a universal constant like the speed of light.
* Terminal velocity is the relevant concept: The maximum speed an object can reach due to air resistance is called terminal velocity. This is when the force of air resistance equals the force of gravity, resulting in no net acceleration.
Therefore, there is no specific name for the "fastest speed" due to air resistance because it depends on the specific object and its environment.
However, it is important to note that the speed of sound is often considered a significant factor in air resistance, as it marks a transition point where compressibility of the air becomes a major factor. Objects traveling faster than the speed of sound experience significantly different air resistance characteristics than those traveling slower.
