Units and Basic Quantities

Units and Base Quantities

  1. Physical quantities are quantities that can be measure.
  2. Physical quantities can be classified into two types,
    1. the base quantities
    2. the derived quantities
  3. Base quantities are quantities that cannot be defined in terms of other base quantities
  4. Derived quantities are physical quantities derived from a combination of various base quantities through multiplication or division.
  5. Three basic quantities we measure in physics are length, mass and time.
  6. Units for other quantities are based on them.
  7. For example, are of a rectangle = Width x Length. Both width and length are base quantities, whereas area is a derived quantity as it is derived from length.

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