Vector is quantity that ------.
Correct answer: C. Follow rules of vector addition
- A. Has direction
- B. Has magnitude
- C. Follow rules of vector addition
- D. None of the above
Explanation
For a quantity to be a vector, it must follow the rules of vector addition, because they allow for the combination of magnitudes and directions in a systematic way. These rules include commutative property of addition, associative property of addition, identity element for addition, and inverse element of addition. Hence, we can say that a vector is a quantity that follows rules of vector addition. Hence, C option is the correct answer.
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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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