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.
The official SI symbolic abbreviation is m·s−1, or equivalently, m/s; although the abbreviation mps is sometimes used colloquially, but is incorrect according to the BIPM. 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, and again incorrectly, used instead of km/s.
One metre per second is roughly the speed of an average person walking.
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:
Book to the future People have always mused on what the future holds, personally and globally. Sheila Wayman takes a look at a new book about what life will be like over the next 500 years
Oct 21, 1995; LOVE hotels on the Moon, colonisation of Mars, robots more intelligent than humans, shuttles to the stars - they're all predicted...