![]() The definition of a mile as 5,280 feet (or 8 furlongs), sometimes referred to as the statute mile, international mile, or land mile, which differs from the Roman mile of 5,000 feet, developed due to the importance of the furlong in England, back in 1593. The use of the abbreviation "m" for mile was common before the widespread adoption of the metric system after the adoption of the metric system, "mi" became the preferred abbreviation in order to avoid confusion between miles and meters. History/origin: The mile is an English unit (predecessor of Imperial units and United States Customary Units) of length. It is currently defined as 5,280 feet, 1,760 yards, or exactly 1,609.344 meters. Mileĭefinition: A mile (symbol: mi or m) is a unit of length in the imperial and US customary systems of measurement. The international foot corresponds to human feet with shoe size 13 (UK), 14 (US male), 15.5 (US female), or 46 (EU). Feet are also commonly used to measure altitude (aviation) as well as elevation (such as that of a mountain). In the US, feet and inches are commonly used to measure height, shorter distances, field length (sometimes in the form of yards), etc. While the United States is one of the few, if not only, countries in which the foot is still widely used, many countries used their own version of the foot prior to metrication, as evidenced by a fairly large list of obsolete feet measurements.Ĭurrent use: The foot is primarily used in the United States, Canada, and the United Kingdom for many everyday applications. This resulted in the measurement of a foot varying between 250 mm and 335 mm in the past compared to the current definition of 304.8 mm. The various lengths were due to parts of the human body historically being used as a basis for units of length (such as the cubit, hand, span, digit, and many others, sometimes referred to as anthropic units). History/origin: Prior to standardization of units of measurement, and the definition of the foot currently in use, the measurement of the foot was used in many different systems including the Greek, Roman, English, Chinese, and French systems, varying in length between each. One foot contains 12 inches, and one yard is comprised of three feet. A foot was defined as exactly 0.3048 meters in 1959. Results may contain small errors due to the use of floating point arithmetic.Definition: A foot (symbol: ft) is a unit of length in the imperial and US customary systems of measurement. The precision is 15 significant digits (fourteen digits to the right of the decimal point). Although kilometres per hour is now the most widely used measure of speed, miles per hour remains the standard unit for speed limits in the United States, the United Kingdom, Antigua & Barbuda and Puerto Rico, although the latter two use kilometres for long distances." "Miles per hour (abbreviated mph, MPH or mi/h) is an imperial and United States customary unit of speed expressing the number of statute miles covered in one hour. ![]() Wikipedia page of feet per second Miles Per Hour The corresponding unit in the International System of Units (SI) is the metre per second.Abbreviations include ft/s, ft/sec and fps, and the rarely used scientific notation ft s−1.' It expresses the distance in feet (ft) traveled or displaced, divided by the time in seconds (s, or sec). 'The foot per second (plural feet per second) is a unit of both speed (scalar) and velocity (vector quantity, which includes direction). This is how the units in this conversion are defined: Feet Per Second
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