Western737 From United States of America, joined May 2000, 489 posts, RR: 0
Reply 5, posted (13 years 5 months 1 week 1 hour ago) and read 882 times:
Gosh... That's pretty tough to understand the formula on conversation of mach into MPH. Boy, those chemist or physicist or any scientists making it quite difficult for normal like us to do the simple mathematics to figure it out.
As16 From , joined Dec 1969, posts, RR:
Reply 7, posted (13 years 5 months 6 days 23 hours ago) and read 874 times:
The speed of sound decreases as altitude increases.
Concorde flys at mach2, however this is at 55,000 feet, much higher than a typical 33,000 ft cruising altitude, where some passenger aircraft may fly at, say, mach 0.8.
Try this link... http://hyperphysics.phy-astr.gsu.edu/hbase/hframe.html
look for speed of sound in menu on left, near to the bottom.