Metre per second
From Wikipedia, the free encyclopedia
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. The symbol is m·s−1, or equivalently, m/s. This unit of speed has been labeled a "benz" in honor of Karl Benz.
Astronomical measurements sometimes list velocities in terms of kilometres per second, where a kilometre per second is equivalent to 1 000 metres per second.
[edit] Conversions
1 metre per second is equivalent to:
- ≈ 3.2808 feet per second (approximately)
- ≈ 2.2369 miles per hour (approximately)
- ≡ 3.6 km·h−1 (exactly)
1 foot per second ≡ 0.3048 m·s−1 (exactly)
1 mile per hour ≈ 0.4471 m·s−1 (approximately)
1 km·h-1 ≈ 0.2778 m·s−1 (approximately)
1 kilometre per second is equivalent to:
- ≈ 0.6213 miles per second (approximately)
[edit] Remark
Although m/s is considered as a derived unit, it could be viewed as more fundamental than the metre, since the latter is defined through the speed of light in the vacuum, taken to be exactly 299792458 m/s by definition, which then gives the metre using the definition of one second.
[edit] See also
bs:Metar u sekundi bg:Метър в секунда ca:Metre per segon cs:Metr za sekundu de:Meter pro Sekunde es:Metro por segundo fr:Mètre par seconde ko:미터 매 초 hr:Metar u sekundi it:Metro al secondo nl:Meter per seconde ja:メートル毎秒 nn:Meter per sekund pt:Metro por segundo ru:Метр в секунду sl:Meter na sekundo fi:Metriä sekunnissa sv:Meter per sekund th:เมตรต่อวินาที
