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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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AAKASH INSTITUTE ENGLISH-MOCK TEST 2-EXAMPLE
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  7. The derivative of f(x)=3x^2 +2x + 4 w.r.t. x is

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  9. The derivative of function f(x) = loge(2x) w.r.t. t is

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  10. An object moves 10 m in 4 s then turns left and moves 20 m in next 5 s...

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  11. A particle moves on a straight line with velocity 2 m/s covers a dista...

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  14. A body moves in straight line and covers first half of the distance wi...

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  17. The position of a particle with respect to time t along y-axis is give...

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  18. int2^4 1/x dx is equal to

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  19. If y = log(10) x, then the value of (dy)/(dx) is

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  20. Let y=x^2+ x , the minimum value of y is

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