Difference between revisions of "Speed"

Revision as of 04:28, October 17, 2007

In Physics, speed refers to the magnitude of the velocity of an object.

Speed is the total distance traveled divided by the time it takes to travel it^[1].

<math>Speed=\frac{d D}{d t}</math>

Note that speed is a scalar, therefore it has no direction or sign.

Like velocity, units for it's measurement are meter/second and more commonly in informal circumstances kilometer/hour and mile/hour

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-'''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 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>.
+<math>Speed=\frac{d D}{d t}</math>
+Note that speed is a scalar, therefore it has no direction or sign.
+Like velocity, units for it's measurement are [[meter]]/[[second]] and more commonly in informal circumstances [[kilometer]]/[[hour]] and [[mile]]/[[hour]]
+==References==
+<references/>
-Speed is always a positive value, unlike [[velocity]], which is speed and direction.
 [[category:physics]]
 [[category:mechanics]]