What is scalar and vector in …
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Yogita Ingle 7 years, 7 months ago
Scalars: Some physical quantities can be described just by their numerical value (with their respective units) without directions (they don’t have any direction). The addition of these physical quantities follows the simple rules of algebra. Such physical quantities are known as scalars.
Vectors: Sometimes, to describe certain physical quantity, complete description of magnitude and direction is required (unlike scalars, they have a direction). The addition of these physical quantities does not follow the rules of algebra. To add vector quantities, special rules for the addition and subtraction of vectors are followed which we will learn as we go ahead in this chapter. These physical quantities are known as vectors.
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