The letter "v" is the 22nd letter of the English alphabet. It is a consonant and is pronounced as /viː/ in the International Phonetic Alphabet (IPA). In written form, "v" can be both uppercase (V) and lowercase (v). It is commonly used in various words, such as victory, vase, and vital. In mathematics, "v" often represents a variable or vector. For example, in physics, it can denote velocity, which measures the speed of an object in a specific direction. Additionally, in Roman numerals, "V" represents the number 5, showcasing its versatility in different contexts.