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Lesson 1

Forces, Motion and Mechanical Work

Lesson parts

1.1 Why study motion?Why study motion?1.1

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1.2 Definition of motionDefinition of motion1.2

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1.3 Types of motionTypes of motion1.3

1.4 Why we need velocityWhy we need velocity1.4

1.5 Speed and velocitySpeed and velocity1.5

1.6 Converting unitsConverting units1.6

1.7 Worked examplesWorked examples1.7

1.8 Uniform and non-uniform (variable) velocityUniform and non-uniform (variable) velocity1.8

1.9 Instantaneous and average velocityInstantaneous and average velocity1.9

1.10 Worked examplesWorked examples1.10

1.11 How to draw itHow to draw it1.11

1.12 Reading the displacement–time graphReading the displacement–time graph1.12

1.13 Worked examplesWorked examples1.13

1.14 DefinitionDefinition1.14

1.15 A motion diagram: the car that gains 5 m/s every secondA motion diagram: the car that gains 5 m/s every second1.15

1.16 Types of accelerationTypes of acceleration1.16

1.17 Worked examplesWorked examples1.17

1.18 Reading the graphReading the graph1.18

1.19 Analysing a multi-stage graphAnalysing a multi-stage graph1.19

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1.20 Extension — displacement from the v–t graphExtension — displacement from the v–t graph1.20

1.21 Motion (dot) diagramsMotion (dot) diagrams1.21

1.22 More worked examplesMore worked examples1.22

1.23 Short answers to typical discussion questionsShort answers to typical discussion questions1.23

1.24 SummarySummary1.24

1.25 IntroductionIntroduction1.25

1.26 What is force?What is force?1.26

1.27 Resultant forceResultant force1.27

1.28 Observation and the old beliefObservation and the old belief1.28

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1.29 Statement of the lawStatement of the law1.29

1.30 Consequences of the first lawConsequences of the first law1.30

1.31 InertiaInertia1.31

1.32 MomentumMomentum1.32

1.33 StatementStatement1.33

1.34 Another statement of the lawAnother statement of the law1.34

1.35 Definition of the newtonDefinition of the newton1.35

1.36 Thinking exerciseThinking exercise1.36

1.37 Worked examplesWorked examples1.37

1.38 Life applications of the second law (force, time and change of momentum)Life applications of the second law (force, time and change of momentum)1.38

1.39 The first law as a special case of the secondThe first law as a special case of the second1.39

1.40 ObservationsObservations1.40

1.41 StatementStatement1.41

1.42 Properties of action and reactionProperties of action and reaction1.42

1.43 ApplicationsApplications1.43

1.44 Worked examplesWorked examples1.44

1.45 Short answers to typical discussion questionsShort answers to typical discussion questions1.45

1.46 SummarySummary1.46

1.47 Key Scientific Tables & Anatomical Diagrams Extracted from Official CurriculaKey Scientific Tables & Anatomical Diagrams Extracted from Official Curricula1.47

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