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Introduction to Physics | Week 14 Topics1 Quiz
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Measurement I | Week 23 Topics1 Quiz
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Measurement II | Week 36 Topics1 Quiz
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Motion | Week 45 Topics1 Quiz
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Velocity-Time Graph | Week 54 Topics1 Quiz
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Causes of Motion | Week 65 Topics1 Quiz
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Work, Energy & Power | Week 73 Topics
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Energy Transformation / Power | Week 83 Topics1 Quiz
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Heat Energy | Week 95 Topics1 Quiz
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Linear Expansion | Week 107 Topics1 Quiz
Topic Content:
- Derived Quantities
These are quantities obtained by combination of two or more fundamental quantities and they can be expressed as a product e.g.
Momentum is a product of Mass of a body and its velocity.
(i) Momentum = Mass × Velocity
= kg × ms-1
= kgms-1 ⇒ Derived units
or as a quotient e.g.
(ii) Velocity = \( \frac {Distance}{Time}\\ = \frac{m}{s}\)
= ms-1 ⇒ Derived units
| Derived Quantity | Derived Unit | Symbol |
|---|---|---|
| Acceleration | \( \frac {Change \: in \:Velocity}{Time} \\= \frac {ms^{-1}}{s}\) | ms-2 |
| Volume | V = l × b × h = m × m × m | m3 |
| Area | A = l × b = m ×
| m2 |
| DensityDensity is the measurement of how tightly a material is packed together i.e. how closely the particles are packed in the material. The tighter the material is packed the more its... More | \( \frac {Mass}{Volume} \\ = \frac {Kilogramme}{m^3}\) | Kgm-3 |
| Force | Mass x Acceleration = Kg × ms-2 | Kgms-2 |
Derived units are units obtained from the combination of two or more fundamental units. They can be expressed as a product or quotient.
Understood
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