Difference between revisions of "Speed"
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| − | In [[physics]], speed refers to the magnitude of the [[velocity]] of an object. | + | 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> | <math>Speed=\frac{d D}{d t}</math> | ||
Revision as of 03:48, January 27, 2008
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 its measurement are meter/second and more commonly in informal circumstances kilometer/hour and mile/hour.
References
- ↑ Serway and Beichner, Physics for Scientists and Engineers, Fifth Edition