a boy goes to market at an average speed of 29 km/hr. finding the market closed,he immediately returned back by the same path with an average speed of 49 km/hr. find the average speed and average velocity for the complete journey.and if the boy covers half the path during his returns journey, find the average speed and velocity
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by returning at the same path the displacement will be 0,so we have to find out only speed =39km/h
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