Question

Why are length, mass and time chosen as base quantities in mechanics?

Answer 1

The quantity length, mass and time can’t be further divided into other physical quantities. These quantities are fundamental quantities. All other quantities of mechanics can be expressed in terms of length, mass and time through simple relations. So, in mechanics length, mass and time are chosen as base quantities.

Final Answer: Because all other quantities in mechanics can be expressed in terms of length, mass and time through simple relations.