A car moving over a straight path covers a distance x with constant speed of vâ and then the same distance with constant speed of vâ. Average speed of a car would be obtained by .......... formula.
(A) v = (vâ + vâ) / 2
(B) v = â(vâvâ)
(C) 2/v = 1/vâ + 1/vâ
(D) 1/v = 1/vâ + 1/vâ
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Answer: Answer is A
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