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Speed is defined as ratio of distancce covered to the time taken
s.i unit  m/s
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The Brainliest Answer!

Speed:- The distance travelled by a body per unit time is called speed.
.: Speed = Distance Travelled/Time taken

or V = s / t
where v = speed
s = distance travelled
& t = time taken

The S.I. Unit of speed is metres per second written as m/sec
It is a scalar quantity.

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