1.

A person travels along a straight road for half the distance with velocity V_1 and the remaining half distance with velocity V_2 the average velocity is given by

Answer»

`v_(1)v_(2)`
`(v_2/v_1)^(2)`
`(v_(1)+v_2)/2`
`(2v_(1)v_(2))/(v_(1)+v_(2))`

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