2007-03-09 12:26:33 · 6 answers · asked by Krzysztos L 1 in Cars & Transportation ➔ Aircraft
Mach 1 at sea level is approx 760 mph, Mach 4 at sea level is 4 times as fast or 3040 mph...
2007-03-09 15:59:24 · answer #1 · answered by mcdonaldcj 6 · 0⤊ 0⤋
Basically the speed of sound, or Mach, on a standard day at sea level is 761 mph multiply that times four, or Mach 4, gets you a speed of 3044 mph. Now a standard day is 59 degrees Fehrenheit, or 15 degrees Celcius, and a barimetric pressure of 29.92 or 1013.2 millibars. These three things are needed to measure the speed of sound, altitude, barimetric pressure, and temperature.
2007-03-12 04:25:21 · answer #2 · answered by Steve L 1 · 0⤊ 0⤋
It is MACH !
Mach number is a ratio while mph is an absolute value. So they cannot be mutually converted without assumptions. To precisely answer your question we need to know the speed of sound at the altitude in question.
Assuming speed of sound as 330 meter per seconds, the answer is 2970 miles per hour.
Take speed of sound as 300 meters per second (at about 33,000 feet) the answer is 2700 mph.
2007-03-09 14:44:20 · answer #3 · answered by ? 6 · 1⤊ 0⤋
I am guessing about 2700 miles per hour or so.
Very fast!
You are refering to Mach speed. Each Mach is equal to the speed of sound.
4 x (Speed of Sound) =/= 2700 MPH
2007-03-09 14:23:41 · answer #4 · answered by Mere Mortal 7 · 0⤊ 0⤋
Approximately 2,650 mph.
2007-03-09 12:37:47 · answer #5 · answered by Anonymous · 0⤊ 0⤋
between 2,700-2,900 mph depending on weather conditions and temperature.
2007-03-09 14:50:35 · answer #6 · answered by tyler p 1 · 0⤊ 0⤋