Define speed. write the mathematical formula to find out speed.
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The formula for speed is speed = distance ÷ time. To work out what the units are for speed, you need to know the units for distance and time. In this example, distance is in metres (m) and time is in seconds (s), so the units will be in metres per second (m/s).
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speed is the distance travelled or covered per unit time or in a given time .
The S.I. unit of speed is m/sec
Speed = distance ÷ time
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