What is a vector? How can it be represented?

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(N/A) vector is a physical quantity that has both magnitude and direction.$A$ vector is represented by a directed line segment. The end of the line se

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(N/A) vector is a physical quantity that has both magnitude and direction.
$A$ vector is represented by a directed line segment. The end of the line segment with an arrow is called the 'head' of the vector,and the end without the arrow is called the 'tail' of the vector. The length of the vector is drawn proportional to the magnitude of the physical quantity.
Example: $A$ force of $4 \ N$ is acting in the East direction. Suppose we choose a scale where $1 \ cm$ corresponds to $1 \ N$ of force. Therefore,a vector of length $4 \ cm$ pointing towards the East can represent this $4 \ N$ force.

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