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A body travelling along a straight line traversed one-third of the total distance

A body travelling along a straight line traversed one-third of the total distance with a velocity 4ms⁻¹.The remaining part of the distance was covered with a velocity 2 ms⁻¹ for half the time and with velocity 6 ms⁻¹ for the other half time.The average velocity over the whole time of the motion is

Options

(a) 5 ms⁻¹
(b) 4 ms⁻¹
(c) 4.5 ms⁻¹
(d) 3.5 ms⁻¹

Correct Answer:

4 ms⁻¹

Explanation:

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