Vector

Things to remember

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• A vector is a quantity having its length as well as direction.
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• Scalar are those physical quantities which have only magnitude without length and direction.
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• Vector are represented by symbols with an arrow head at the top like \(\overrightarrow{AB}\).
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• Magnitude of a vector is the length of a vector which have its absolute or position value between initial and terminal point of a vector. It is denoted by \(\overrightarrow{a}\).
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• The direction of a vector is a measure of an angle made by the vector with the positive direction which makes with a horizontal line of the x-axis.
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• If the vector has the magnitude of one then it is called unit vector. /\(\overrightarrow{AB}\)/ = 1 units.
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