Speed
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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
References
- â Serway and Beichner, Physics for Scientists and Engineers, Fifth Edition