metre per second

{{Infobox unit

| name = Metre per second

| image =

| caption =

| standard = SI

| quantity = speed

| symbol = m/s

| units1 = km/h

| inunits1 = 3.6

| units2 = mph

| inunits2 = 2.2369

| units3 = kn

| inunits3 = 1.9438

| units4 = ft/s

| inunits4 = 3.2808

}}

The metre per second is the unit of both speed (a scalar quantity) and velocity (a vector quantity, which has direction and magnitude) in the International System of Units (SI), equal to the speed of a body covering a distance of one metre in a time of one second. According to the definition of metre,{{Cite web |date=29 May 2019 |title=Definitions of the SI base units |url=https://physics.nist.gov/cuu/Units/current.html |access-date=8 February 2022 |website=physics.nist.gov}} {{val|1|u=m/s}} is exactly $\frac{1}{299792458}$ of the speed of light.

The SI unit symbols are m/s, m·s⁻¹, m s⁻¹, or {{sfrac|m|s}}.{{Cite web |url=https://www.bipm.org/en/publications/si-brochure/section5-1.html |title=SI brochure, Section 5.1 |access-date=2018-06-08 |archive-date=2019-03-21 |archive-url=https://web.archive.org/web/20190321011313/https://www.bipm.org/en/publications/si-brochure/section5-1.html |url-status=dead }}

Conversions

{{val|1|u=m/s}} is equivalent to:

: = 3.6 km/h (exactly){{Cite book|url=https://books.google.com/books?id=Zc14AAAAQBAJ|title=South African Automotive Light Vehicle Level 3|last=CDX Automotive|publisher=Jones & Bartlett Learning|year=2013|isbn=978-1449697853|pages=478}}

: ≈ 3.2808 feet per second (approximately){{Cite book|title=EXERGY: Energy, Environment and Sustainable Development|last1=Dinçer|first1=İbrahim|last2=Rosen|first2=Marc A.|publisher=Elsevier|year=2007|isbn=9780080531359|location=Amsterdam|pages=444|oclc=228148217}}

: ≈ 2.2369 miles per hour (approximately){{Cite book|title=Vehicle Dynamics: Theory and Application|last=Jazar|first=Reza N.|publisher=Springer|year=2017|isbn=9783319534411|edition=3.|location=Cham, Switzerland|pages=957|oclc=988750637}}

: ≈ 1.9438 knots (approximately){{Cite book|title=Introduction to Avionics Systems|last=Collinson|first=R.P.G.|publisher=Springer Science & Business Media|year=2013|isbn=9781441974662|edition=2.|location=Boston|pages=16|oclc=861706692}}

1 foot per second = {{val|0.3048|u=m/s}} (exactly){{Cite book|url=https://books.google.com/books?id=RsQaCgAAQBAJ|title=Mechanics of Fluids, SI Edition|last1=Potter|first1=Merle C|last2=Wiggert|first2=David C|last3=Ramadan|first3=Bassem H.|publisher=Cengage Learning|year=2016|isbn=978-1305887701|edition=5.|pages=722}}

1 mile per hour = {{val|0.44704|u=m/s}} (exactly){{Cite book|title=Mechanics for Engineers: Statics|last1=Das|first1=Braja M.|last2=Kassimali|first2=Aslam|last3=Sami|first3=Sedat|publisher=J. Ross Publishing|year=2010|isbn=9781604270297|location=Ft. Lauderdale, FL|pages=556|oclc=419827343}}

1 km/h = {{val|0.2|end={{overline|7}}|u=m/s}} (exactly){{Cite book|title=Fundamentals of medium/heavy duty diesel engines|last=Wright|first=Gus|publisher=Jones & Bartlett Publishers|year=2015|isbn=9781284067057|location=Burlington, Massachusetts|pages=1349|oclc=927104266}}

Relation to other measures

The benz, named in honour of Karl Benz, has been proposed as a name for one metre per second. Although it has seen some support as a practical unit, primarily from German sources, it was rejected as the SI unit of velocity and has not seen widespread use or acceptance.

The square of metres per second, or square metre per square second, is used as a unit of gravitational potential.

Unicode character

The "metre per second" symbol is encoded by Unicode at code point {{unichar|33A7|Square M over S}}.{{cite web |url=https://www.unicode.org/charts/PDF/U3300.pdf |access-date=May 24, 2019 |title=The Unicode Standard 12.0 – CJK Compatibility ❰ Range: 3300—33FF ❱ |author=Unicode Consortium |author-link=Unicode Consortium |date=2019 |website=Unicode.org}}

References

{{reflist|refs=

{{cite book |author=Cardarelli F. |others=Transl. by MJ Shields. |title=Encyclopaedia of Scientific Units, Weights and Measures: Their SI Equivalences and Origins |edition=3rd revised |publisher=Springer |year=2004 |isbn=978-1852336820 |page=[https://archive.org/details/encyclopaediaofs0000card/page/217 217] |url=https://archive.org/details/encyclopaediaofs0000card/page/217 }}

{{cite book |author=Dresner S. |title=Units of Measurement: An Encyclopaedic Dictionary of Units Both Scientific and Popular and the Quantities They Measure |year=1974 |publisher=Harvey Miller and Medcalf |isbn=978-0-85602-036-0 |page=13}}

{{cite journal |author=Heijungs R. |title=On the Use of Units in LCA |journal=The International Journal of Life Cycle Assessment |year=2005 |volume=10 |issue=3 |doi=10.1065/lca2005.02.199 |page=174|bibcode=2005IJLCA..10..173H |s2cid=110961104 }}

{{cite book |author=Klein HA. |title=The Science of Measurement: A Historical Survey |year=2011 |publisher=Dover Publications |isbn=978-0486258393 |page=695}}

}}

External links

[http://webarchive.loc.gov/all/20150221180343/http://www.bipm.org/en/si/si_brochure/chapter2/2-1/metre.html Official BIPM definition of the metre]
[http://www.bipm.org/en/si/si_brochure/chapter2/2-1/second.html Official BIPM definition of the second]

Category:Units of velocity

Category:SI derived units