What is Physical quantity?
In [[physics]], a '''physical quantity''' is any [[physical property]] that can be quantified, that is, be measured using numbers. Examples of physical quantities are [[mass]], [[amount of substance]], [[length]], [[time]], [[temperature]], [[electric current]], [[luminosity|light intensity]], [[force]], [[velocity]], [[density]], and many others. A physical quantity is always measured of natural non-living objects (Inanimate objects) The foundation of physics rests upon physical quantities in term of which the [[laws of physics]] are expressed. Therefore, these [[Quantity|quantities]] have to be measured accurately. Physical quantities are often divided into two categories; base quantities and derived quantities. Derived quantities are those quantities which are derived from other physical quantities. Examples of derived quantities are [[force]], [[velocity]], [[acceleration]] etc. [[Category:Physical quantity| ]]