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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 3
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Derived Quantities

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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 x Velocity

= kg x ms-1

= kgms-1Derived 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
VolumeV = l x b x h
= m x m x m
m3
AreaA = l x b
= m x m
m2
Density \( \frac {Mass}{Volume} \\ = \frac {Kilogramme}{m^3}\)Kgm-3
ForceMass x Acceleration
= Kg x ms-2
Kgms-2

Derived units are units obtained from combination of two or more fundamental units. They can be expressed as a product or quotient.

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