These are units,not forcec.

Fundamental Units are well defined, independent of each other and can not be resolved into any other units.

Seven fundamental units-

      Physical quantities      Fundamental Unit

1.    Mass                               Kilogram

2.    Length                              metre

3.    Time                                  sec

4.    Temperature                       Kelvin

5.    Electric current                   Ampere

6.    Luminous intensity             Candela

7.    Quantity of matter              Mole

Derived units are expressed algebraically in terms of fundamental units or other derived units.

eg.

Speed - unit, m/sec

Force - unit , kg.m/sec²