A car completes the first half of its journey with a velocity v1 and the rest half with a velocity v2. Then the average velocity of the car for the whole journey is

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2v1v2v1+v2

v1+v22

v1v2

none of these

answer is A.

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Detailed Solution

The average velocity is the Harmonic mean of . v1and v2 ∴ Average Velocity =2v1v2v1+v2

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