Vodafone Group Plc (VOD) is a British multinational telecommunications based out of Newbury, Berkshire, England. Founded in 1991, Vodafone offers a wide range of products and services across the globe. It operates in over 30 countries and partners with over 40 markets worldwide.
Originally Answered: What is a Mach number? It is the ratio of velocity of an object to the velocity of sound. If the Mach no is one then object is moving with the velocity of sound.
What is Mach Number? The Mach number is a ratio between the aircraft's speed (v) and the speed of sound (a). That is, M = v/a. The Mach number is named for the Austrian physicist, Ernst Mach (1838-1916). Technically, as you can see, the Mach Number is not a speed but a speed ratio. However, it is used to indicate how fast one is going when compared to the speed of sound.