Metre per second (U.S. spelling: meter per second) is an SI derived unit of both speed (scalar) and velocity (vector quantity) which specifies both magnitude and a specific direction), defined by distance in metres divided by time in seconds. Phonology North American English regional phonology In many ways compared to English English, North American English is conservative in its Phonology. SI derived units are part of the SI system of measurement units and are derived from the seven SI base units They are derived from SI basic units/defined Speed is the rate of motion, or equivalently the rate of change in position often expressed as Distance d traveled per unit of In Physics, a scalar is a simple Physical quantity that is not changed by Coordinate system rotations or translations (in Newtonian mechanics or In Physics, velocity is defined as the rate of change of Position. Distance is a numerical description of how far apart objects are The metre or meter is a unit of Length. It is the basic unit of Length in the Metric system and in the International For other uses see Time (disambiguation Time is a component of a measuring system used to sequence events to compare the durations of The second ( SI symbol s) sometimes abbreviated sec, is the name of a unit of Time, and is the International System of Units

The official SI symbolic abbreviation is m·s⁻¹, or equivalently, m/s; although the abbreviation mps is sometimes used colloquially. For the HTML tag see HTML element. An abbreviation (from Latin brevis "short" Where metres per second are several orders of magnitude too slow to be convenient, such as in astronomical measurements, velocities may be given in terms of kilometres per second, where 1 km/s is equivalent to 1,000 metres per second; in popular, non-science literature kps is occasionally used instead of km/s. Astronomy (from the Greek words astron (ἄστρον "star" and nomos (νόμος "law" is the scientific study

One metre per second is roughly the speed of an average person walking.

Conversions

1 metre per second is equivalent to:

= 3. 6 km·h⁻¹ (exactly)

≈ 3. (For the South African airport with IATA code "KMH" see Johan Pienaar Airport. 2808 feet per second (approximately)

≈ 2. The foot per second (plural feet per second) is a unit of both Speed (scalar and Velocity (vector quantity which includes direction 2369 miles per hour (approximately)

1 foot per second = 0. The foot per second (plural feet per second) is a unit of both Speed (scalar and Velocity (vector quantity which includes direction 3048 m·s⁻¹ (exactly)

1 mile per hour ≈ 0. 4471 m·s⁻¹ (approximately)

1 km·h^-1 ≈ 0. (For the South African airport with IATA code "KMH" see Johan Pienaar Airport. 2778 m·s⁻¹ (approximately)

1 kilometre per second is equivalent to:

≈ 0. 6213 miles per second (approximately)

≈ 2,237 miles per hour (approximate)

Relation to other measures

Although m·s⁻¹ is an SI derived unit, it could be viewed as more fundamental than the metre, since the latter is derived from the speed of light in a vacuum, which is defined as exactly 299 792 458 m·s⁻¹ by the International Bureau of Weights and Measures^[1]. The International Bureau of Weights and Measures ( Bureau international des poids et mesures, in French) is an international Standards organization, one It follows that one metre is the length of the path travelled by light in a vacuum during a time interval of 1/299 792 458 of one second.

See also

• kilometre per hour
• Orders of magnitude (speed)

References

1. ^ BIPM - metre

External links

• Official BIPM definition of the metre
• Official BIPM definition of the second