What are fundamental quantities ? State their units in SI.

Is there any limit for the number of fundamental (base) quantities? What are supplementary fundamental quantities ? Define their units.

Fundamental unit of nature is

If the velocity is presented by V, force by F and work by W . These quantities are taken as fundamental quantities then the correct dimensions of mass will be

Why is the dimension of one fundamental (base) quantity interms of any other fundamental (base) quantity is always zero.

The set of quantities which can form a group of fundamental quantities in any system of measurement is