Miles per hour is a unit of speed, expressing the number of international miles covered per hour. The common abbreviation in everyday use is mph, although mi/h, using the SI method of expressing derived units, is sometimes used, especially in the United States. The preferred SI unit for velocity is m/s, although km/h is often used as a replacement for mph. In physics and metrology, units are standards for measurement of physical quantities that need clear definitions to be useful. ... Speed (symbol: v) is the rate of motion, or equivalently the rate of change of position, expressed as distance d moved per unit of time t. ... A mile is any of several units of distance, or, in physics terminology, of length. ... The hour was originally defined in Egypt as 1/24 of a day, based on their duo-decimal numbering system (which counted finger joints on each hand). ... The International System of Units (abbreviated SI from the French phrase, Système International dUnités) is the most widely used system of units. ... The International System of Units (abbreviated SI from the French phrase, Système International dUnités) is the most widely used system of units. ... Metre per second (U.S. spelling: meter per second) is an SI derived unit of both speed (scalar) and velocity (vector), defined by distance in metres divided by time in seconds. ... Kilometre per hour (American spelling: kilometer per hour) is a unit of both speed (scalar) and velocity (vector). ...

1 mph is equal to:

• 0.44704 m/s, the SI derived unit
• 1.609344 km/h
• 22/15 =1.4667 feet per second
• approx. 0.868976 knots

Miles per hour is the unit used for speed limits on roads in the US and Britain. Metre per second (U.S. spelling: meter per second) is an SI derived unit of both speed (scalar) and velocity (vector), defined by distance in metres divided by time in seconds. ... SI derived units are part of the SI system of measurement units and are derived from the seven SI base units. ... Kilometre per hour (American spelling: kilometer per hour) is a unit of both speed (scalar) and velocity (vector). ... A knot is a non SI unit of speed equal to one nautical mile per hour. ... A speed limit is the maximum speed allowed by law for vehicles on a road. ...

Examples of speeds in mph

This racing bicycle is built using lightweight, shaped aluminum tubing and carbon fiber stays and forks. ... A speed limit is the maximum speed allowed by law for vehicles on a road. ... This article deals with the African herbivorous mammal. ... Binomial name Acinonyx jubatus (Schreber, 1775) The Cheetah (Acinonyx jubatus) is an atypical member of the cat family (Felidae) that hunts by speed rather than by stealth or pack tactics. ... Japanese Shinkansen trains began the development of modern high-speed railways (shown here: West Japan Railway Company 500 Series Shinkansen at Kyoto). ... An airliner is a large fixed-wing aircraft (an aeroplane/airplane) initially designed for the transport of paying passengers, and usually operated by an airline company (which owns or leases the aircraft). ... The speed of sound c (from Latin celeritas, velocity) varies depending on the medium through which the sound waves pass. ... 1970 land speed record being set at Bonneville Salt Flats by Gary Gabelich Land Speed Records 1898-2002 The information below is for self-propelled wheeled vehicles travelling over open ground. ... The Space Shuttle Columbia seconds after engine ignition, 1981 (NASA). ... In physics, for a given gravitational field and a given position, the escape velocity is the minimum speed an object without propulsion, at that position, needs to have to move away indefinitely from the source of the field, as opposed to falling back or staying in an orbit within a... Cherenkov effect in a swimming pool nuclear reactor. ...

External links

• Conversion Calculator for Units of SPEED