The number of categories in which physical quantities are divided is_____________?
Correct answer: B. 2
- A. 1
- B. 2
- C. 3
- D. 4
Explanation
Physical quantities are commonly divided into two categories: scalars, which have magnitude only, and vectors, which have both magnitude and direction. The likely trap is 3, which may come from confusing physical quantities with the three basic quantities used in some classifications.
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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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