Physical quantities
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Define physical quantities.
A physical quantity is a quantity that can be measured.
How is a physical quantity expressed?
A physical quantity is expressed in the form of: 1) Numerical value 2) Unit of measurement Mass = 45 kg, where Mass - physical quantity 45 = numerical value kg = unit of measurement
Give some examples of physical quantities and their SI units.
Mass: kilogram, kg Length: metre, m Time: seconds, s Temperature: Kelvin, K Current: ampere, A Remark: Non-physical quantities are quantities that cannot be measured, for example, colour intensity and human emotion.
What is SI unit?
SI unit is the international accepted units of measurements of physical quantities.
