A vector which specifies the direction is called:
Correct answer: B. A unit vector
- A. A null vector
- B. A unit vector
- C. A position vector
- D. A resultant vector
Explanation
A vector that specifies only the direction without regard to its magnitude is called a unit vector. A unit vector has a magnitude of 1 and is used to represent a specific direction in space.
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About Vectors and Equilibrium
Vectors have magnitude and direction, unlike scalars, and are combined by head-to-tail or parallelogram methods. Work covers rectangular components, equilibrium when the resultant force is zero, the scalar product for work and projections, and the vector product for torque and cross-product direction using the right-hand rule.
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