Originally Posted by indufan
Yea, I know, I just don't know how to convert it.
You can type "mach 0.875 to miles per hour" into Google, and it will give you the statute miles per hour for that mach number. In this case 666 miles/hour. Come to think of it, that may be the joke
Gotta love Google
Originally Posted by jimrpa
I believe the conversion isn't straight-forward. As I recall it's a function of altitude and air temperature.
I thought it was more complicated than it appears to be.
The S I compatible unit of speed is meters/second. To change any of these other units of speed into their equivalent values in meters/second use the operation and conversion factor given. Those marked with # are exact. Other values are given to an appropriate degree of accuracy.
Mach number x 331.5
I have no idea where 331.5 comes from
Source: http://www.electro-optical.com/unitc..._cat.htm#speed