Question

What are derived quantities and derived units? State two examples. State the corresponding S.I. and C.G.S. units of the examples.

Answer 1

Hey, derived quantities, are defined in terms of the seven base quantities via a system ofquantity equations. The SI derived units for these derived quantities are obtained from these equations and the seven SI base units.
You see there are 7 fundamental quantities or basic quantities like
Mass
Length
Time
Temperature
Intensity of current
Luminous intensity
Amount of substance
There quantities have SI UNITS (SYSTEM INTERNATIONAL UNITS):
MASS -KILOGRAM - KG
LENGTH -METRE - m
Time - seconds -s
Temperature - kelvin -K
Intensity of current - Amphere-A
LUMINOUS INTENSITY - CANDELA -cd
Amount of substance - mol

From these there some other units are based from them.
For example Area Of square a^2 meaning l*l
Here the formula is a^2 but isn't it from the fundamental unit L

The SI DERIVED UNITS ARE IN TEN ABOVE FIGURE

Answer 2

• The quantities that are derived using the fundamental quantities are called derived quantities.

• The units that are used to measure these derived quantities are called derived units.
• There are two examples:

1. Derive quantity: Acceleration, Derive unit: $m/s^{2}$
2. Derive quantity: Mass density, Derive unit: $kg/m^{3}$