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7. What is not true about an unit vector, ui? A) It is dimensionless. B) Its magnitude is one. C) It always points in the dir
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Answer #1

Your required answer is option C i.e. It always Points in the direction of positive X-axis.

Explanation:

Unit Vector which is also know as Direction Vector it is a vector of length 1 and it does not always points in the direction of positive x-axis. However it always points in the direction of Vector A.

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