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What is the conversion factor between km/hr and m/s?
To convert ##(km.)/(hr.)## to ##m/(sec)##, one needs to multiply by ##5/18##.
##1## km/hr means ##1000## meters in ##3600## seconds or ##1000/3600=5/18## ##m/sec##.
Hence, if one has to convert ##(km.)/(hr.)## to ##m/(sec)##, one needs to multiply by ##5/18##.
For converting ##m/(sec)## to ##(km.)/(hr.)## one needs to divide by ##5/18## i.e. multiply by ##18/5##.