Theme A · Space, time and motion · Class 5 · Newton’s laws and momentum
A.2 Force and motion
Newton’s three laws in one format (name, words, maths), momentum and its conservation, what momentum is not, and how to handle a rebound. Classes 3 and 4 of A.1 come later.
Lessons
- A.2 · 1Newton's first lawThe law of inertia: no net force, no change in motion. · A.2 Forces and momentum · Newton’s lawsSL+HLEasier12 minFree
- A.2 · 2Newton's second lawThe law of acceleration: force is the rate of change of momentum. · A.2 Forces and momentum · Newton’s laws, momentumSL+HLMedium16 minFree
- A.2 · 3Newton's third lawThe law of action and reaction: forces come in pairs, on different objects. · A.2 Forces and momentum · Newton’s lawsSL+HLMedium14 minFree
- A.2 · 4Momentum conservationNewton’s second and third laws together: what one object gains, the other loses. · A.2 Forces and momentum · conservation of momentumSL+HLHarder18 minFree
- A.2 · 5Momentum vs kinetic energyCommonly confused, and once argued over for about sixty years. · A.2 Forces and momentum · momentum and kinetic energySL+HLMedium15 minFree
- A.2 · 6Momentum change: four casesWhen the direction reverses, treat momentum as a vector. Use a number line. · A.2 Forces and momentum · change in momentumSL+HLHarder16 minFree
- A.2 · QuizQuiz: momentum and forceTen multiple-choice questions on Newton’s second and third laws and on momentum. · A.2 Forces and momentum · practiceSL+HLMedium20 minFree