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Changed category to Mechanics
'''Speed''' is [[distance]] divided by [[time]]. <math>speed=\frac{d D}{d T}</math>
In [[physics]],
'''speed''' refers to the magnitude of the [[velocity]] of an object.
Speed is always a positive value, unlike [[velocity]], which is speed and direction.
Speed is the total [[distance]] traveled divided by the [[time]] it takes to travel it.<ref>Serway and Beichner, ''Physics for Scientists and Engineers'', Fifth Edition</ref>
[[category:physics]]
[[category:mechanics]]
<math>Speed=\frac{d D}{d t}</math>
Note that speed is a [[scalar]], therefore it has no direction, and because it is a measure of magnitude, it is never negative.
Like velocity, units for its measurement are [[meter]]s/[[second]] (m/s), and more commonly in informal circumstances [[kilometer]]s/[[hour]] (kph) or (km/h) and [[mile]]s/[[hour]] (mph) or (MPH).
==References==
<references/>
[[Category:Mechanics]]