Wind is blowing west to east along two parallel tracks. Two trains moving with the same speed in opposite directions have the same steam tracks, if one is double than the other, what is the speed of each train?  from Physics Motion in A Plane Class 11 Manipur Board
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Physics Part I

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Wind is blowing west to east along two parallel tracks. Two trains moving with the same speed in opposite directions have the same steam tracks, if one is double than the other, what is the speed of each train? 


Let v and w be the velocity of each train and wind respectively. 

According to the question, we have

(v+w) = 2 (v-w)


rightwards double arrow space straight v space equals space 3 straight w 

That is, velocity of each train is 3 times the velocity of wind. 

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A quantity must possess the direction and must follow the vector axioms. Any quantity that follows the vector axioms are classified as vectors. 


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