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A man runs along the straight road for h...

A man runs along the straight road for half the distance with velocity `v_(1)` and the remaining half distance with velocity `v_(2)`. Then the average velocity is given by

A

`(2v_1v_2)/(v_1+v_2)`

B

`(v_1+v_2)/2`

C

`(v_1v_2)/2`

D

`(v_1^2 + v_2^2)/(2v_1v_2)`

Text Solution

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The correct Answer is:
A
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Knowledge Check

  • A person travels along a straight road for the first half with a velocity v_(1) and the second half time with a velocity v_(2) . Then the mean velocity vecv is given by

    A
    `barv = (v_(1) + v_(2))/(2)`
    B
    `(2)/(v) = (1)/(v_(1)) + (1)/(v_(2))`
    C
    `barv = sqrt(v_(1)v_(2))`
    D
    `barv = sqrt((v_(2))/(v_(1)))`

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