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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a
2v1v2v1+v2
b
v1+v22
c
v1v2
d
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