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A person travels x distance with velocity v 1 and then x distance with velocity v 2 in the same direction. The average velocity of the person is v, then the relation between v, v 1 and v 2 will be -

1. v = 2 v v 2 1 
2. 2 1 v 1 v 1 v 1  
3. v = v 1 + v 2
4. 2 1 v 1 v 1 v 2  

Correct answer: 2 1 v 1 v 1 v 2  

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