What is Mach 3 in common language known as?
The speed of sound as sea level at average temperature in dry air is 344 meters per second or 1232 kilometers per hour or 770 miles per hour or 1130 feet per second. The speed of sound depends on the medium that sound is travelling through. Sounds sound a little different in very cold air or very wet air. Mach number, a useful quantity in aerodynamics, is the ratio of an object’s speed to the speed of sound in the medium through which it is passing. So Mach 1 is an objects speed at the speed of sound and Mach 2 is an objects speed at twice the speed of sound and so on. By the way, going pass Mach 1 creates a sonic boom which is when the object is moving faster than the noise around it. It really is a big booming sound.
