Question

fundamendal and derived quantities​

Answer 1

Answer:

Fundamental quantities are those physical quantities that cannot be expressed in terms other quantities. ... Derived quantities are those physical quantities that are derived from the combination of fundamental quantities. It is a dependent quantity. For example : force, density, volume, momentum etc.

Answer 2

Explanation:

Fundamental Quantities

The quantities that do not depend on any other physical quantity for their measurement are known as fundamental quantities. These quantities do not take support of other physical quantities for its measurement. There are only 7 physical quantities. And rest of all other quantities are derived quantities. They are listed below.

Fundamental Quantities along Their Units

Mass-

Kilogram

Time-

Second

Temperature-

Kelvin

Electric Current-

Ampere

Luminous Intensity-

Candela

Length-

Meter

Amount Of Substance-

Mole

For example: the fundamental quantity, mass, can be measured directly using balance and hence it does not depend upon other quantity.

Derived Quantities

The Physical quantities that depend upon other physical quantity for its measurement are known as derived quantities. The measurement of derived quantities directly depends upon other quantities. So in order to measure the derive quantity, one must measure the quantities that it depends upon. Except 7 fundamental quantities, all other quantities are derived quantities. Some examples of derived quantities are:

Acceleration-

m/s^2

Density-

Kg/m^3

Pressure-

Pascal

Potential Difference-

Volt

Volume-

M^3

Force-

Newton

Speed-

m/s

Area-

M^2

Derived Quantity like speed depends upon length and time. Hence it is called derived quantities.