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.
The Mach number is named after Ernst Mach, an Austrian physicist. If the Mach number is less than 1, it implies that the speed of the object is lesser than the speed of sound. When the speed of the object exceeds the speed of sound, the Mach number will be greater than 1.