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A train starting from railway station attains a speed of 21/sec, in one minute find its accelaration? A body travels a distance of 3km towards east,then 4km towards east, then 4kmtowards north and finally 9km towards east. what is the total distance travelled? A scooty driver covers a distance of 3km in 5minutes. calculate his speed in centimetre per second,metre per second,kilometre per second.

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