A vector which has magnitude one is called _________?
Correct answer: B. A unit vector
- A. A resultant vector
- B. A unit vector
- C. A null vector
- D. A position vector
Explanation
A vector with magnitude exactly one is called a unit vector, and it is used to specify direction. A null vector is the likely distractor because it is also a special vector, but its magnitude is zero, not one.
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About Addition of Vectors
Vector addition combines directed quantities using the head-to-tail, parallelogram and component methods. Work includes finding the resultant magnitude and direction for two or more vectors, resolving vectors into perpendicular components, and distinguishing vector addition from scalar addition, where direction has no role.
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