Question

why is kg a fundamental unit but kg/m2 a derived unit

Answer 1

Answer:

exwlianeine os kg 2 kg 9 it will m2 m3

Answer 2

First of all, a unit is said to be a FUNDAMENTAL UNIT only when the physical quantity represented by it is an fundamental quantity.

Now, as per conventions, " Mass " is assigned to be a fundamental physical quantity just like Length, Time, etc.

• Hence , kg is a fundamental unit.

Now, kg/m² is derived quantity because it is derived by operations (like division) from two physical quantities (i.e. mass and length).

• Hence, kg/m² is a derived quantity.

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