A body covers 1/3 of its journey with a speed of 2 m/s, next 1/3 part with a speed of 3 m/s and rest of the journey with a velocity 6 m/s. Then the average speed of the body for the total journey is :
(A) 3 m/s
(B) 8/3m/s
(C)11/4 m/s
(D) 4/3 m/s
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3m/s11/3 m/s8/3 m/s4/3 m/sALet x be the length of whole journey Average velocity ... A body covers first 13 part of its journey with a velocity of 2m/s, next 13 part with a velocity of 3ms and rest of the journey with a velocity 6m/s.
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