A train takes t sec to perform a journey if travel for t n sec with uniform acceleration then n 3 for t sec with uniform speed v

Question

A train takes t sec to perform a journey if travel for t n sec with uniform acceleration then n 3 for t sec with uniform speed v and n finally it comes to rest with uniform retard ation Then average speed of train is 1 3n 2 3 3n 2 V V 3n V 2 2n 3 4 2n 3

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