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SS1: PHYSICS – 1ST TERM

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  1. Introduction to Physics | Week 1
    4Topics
    |
    1 Quiz
  2. Measurement | Week 2
    3Topics
  3. Measurement of Mass | Week 3
    6Topics
    |
    1 Quiz
  4. Motion | Week 4
    5Topics
    |
    1 Quiz
  5. Velocity-Time Graph | Week 5
    4Topics
    |
    1 Quiz
  6. Causes of Motion | Week 6
    5Topics
    |
    1 Quiz
  7. Work, Energy & Power | Week 7
    3Topics
  8. Energy Transformation / Power | Week 8
    3Topics
    |
    1 Quiz
  9. Heat Energy | Week 9
    5Topics
    |
    1 Quiz
  10. Linear Expansion | Week 10
    6Topics
    |
    1 Quiz
Lesson 2, Topic 2
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Fundamental Quantities and Units

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What are Fundamental Quantities?

Fundamental quantities are basic quantities from which all other quantities are derived from and they are independent of others.

The most important fundamental or basic quantities are:

  1. Mass
  2. Length
  3. Time
  4. Amount of substance
  5. Luminous intensity
  6. Current
  7. Temperature

What are Fundamental Units?

Fundamental units are basic units that other units depend on. They are independent of other units and are the units of fundamental quantities.

Fundamental
Quantity
UnitFundamental
Units
Unit
Symbol
Massmkilogramkg
Lengthlmetrem
Timetsecondss
Electric CurrentIAmpereA
TemperatureTKelvinK
Amount of substancenmoleMol
Luminous intensityIνCandelaCd

The table above shows fundamental quantities, fundamental units, and their symbols.

All other units in physics are obtained from the above units when they are expressed as a product or quotient.

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