Question
What are derived quantities and derived units? State two examples. State the corresponding S.L. and C.G.S. units of the examples.
✓
Answer
- Derived quantities: Physical qUantities other than fundamental quantities which depend on one or more fundamental quantities for their measurements are called derived quantities.
- Derived units: The units of derived quantities which are expressed in terms of fundamental units for their measurements are called derived units.
- Examples and units:
Derived
quantityFormula S.I.
unitC.G.S.
unitVelocity $\frac{\text { Unit of displacement }}{\text { Unit of time }}$ m/s cm/s Acceleration $\frac{\text { Unit of velocity }}{\text { Unit of time }}$ $m / s ^2$ $cm / s ^2$ Momentum Unit of mass
x Unit of velocitykg m/s g cm/s
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