i wanna figure the question on my own, the help i need is that....when calculating total time of flight, do u use the velocity of the plane relative to air (eg 300km/h) or velocity of plane relative to groung (eg 250 kn/h)?????
2007-02-19 08:04:16 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Physics
Use ground speed. Air speed is affected by wind direction & strength. i.e. in a 100mph headwind, one could not move at all and register 100mph in air speed. The planes true progress is measured in how long it took to travel between two points on the surface. Also, knots per hour, kilometers per hour, mph? No difference - just units.
2007-02-19 08:55:33 · answer #1 · answered by Anonymous · 0⤊ 0⤋
The parameters you listed show that the answer to your question lies in another realm. Since the plane is not approaching light speed, the theory of relativity does not apply. So, if the plane is going at X number of km per hour, it is that velocity, relative only to itself, which determines the total time of the flight. Honestly, the best way to determine the total flight time is by use of a simple watch. Since you and it are moving at the same velocity as the plane, the answer will be correct.
2007-02-19 08:20:55 · answer #2 · answered by andromedasview@sbcglobal.net 5 · 0⤊ 1⤋
Relative to the ground as it is traveling between two points on the ground.
2007-02-19 08:07:52 · answer #3 · answered by tanner_nathan_69 2 · 1⤊ 0⤋