define velocity write its formula and units
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the speed of something in a given direction.
"the velocities of the emitted particles"
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The meaning of velocity of an object can be defined as the rate of change of the object's position with respect to a frame of reference and time. ... The SI unit of it is meter per second (ms-1) if there is a change in magnitude or the direction in the velocity of a body the body is said to be accelerating.
SI unit: m/s
Other units: mph, ft/s
Dimension: LT−1
Speed = Distance Travelled/Time taken.
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