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(2) What is a speed? Which formula is used for finding out speed? What is the unit of speed?
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VIKAS SMART WORKBOOK : GENERAL SCIENCE-STD. VI
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speed is a distance covered by a body in unit time .
speed =total distance covered / total time taken
SI unit is meter/second (m/s)
CGS unit is centimeter/second (cm/s)
It is a scalar quantity.
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