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Ahemed is moving in his car with a velocity of 45 km per hour.How mch distance will he covers a)in 1 minte b)in one second

Ans : 
a) 1 hour = 60 mins
 ie ,45 km in 60 mins
   distance traveled in 1 min = 45 / 60 = .75 km
b) 1 hour = 60 min * 60 sec = 3600 sec
 distance traveled in 1 sec = 45 / 3600 = .0125 km