Question

why do we have different units for the same physical quantity??​

Answer 1

We have different units for the same physical quantity because these units were used in different parts of the world. Every country had its own way to express these physical quantities which started creating confusions. ... The SI unit of mass is kilograms.

Answer 2

We have different units for the same physical quantity because these units were used in different parts of the world. Every country had its own way to express these physical quantities which started creating confusions. ... The SI unit of mass is kilograms.