3.1What you will learn3.2Introduction3.31.1 What is force?3.41.2 Resultant force3.52.1 Observation and the old belief3.62.2 Statement of the law3.72.3 Consequences of the first law3.82.4 Inertia3.9Lesson 3: Momentum3.104.1 Statement3.114.2 Another statement of the law3.124.3 Definition of the newton3.134.4 Thinking exercise3.144.6 Life applications of the second law (force, time and change of momentum)3.154.7 The first law as a special case of the second3.165.1 Observations3.175.2 Statement3.185.3 Properties of action and reaction3.195.4 Applications3.20Short answers to typical discussion questions3.21SummaryWhat would you like to do next?