Cambridge AS & A Level Physics
5.1Energy conservation
Energy conservation in Cambridge AS & A Level Physics: what the syllabus expects you to know, the learning objectives and how to practise.
Subtopic45 practice questions2 lessons
Learning objectives
What the syllabus expects you to be able to do.
- 5.1.1Understand work and use work done = force × displacement in the direction of the force.
- 5.1.2Recall and apply the principle of conservation of energy.
- 5.1.3Recall efficiency as useful energy output divided by total energy input.
- 5.1.4Solve problems using efficiency.
- 5.1.5Define power as work done per unit time.
- 5.1.6Solve problems with P = W/t.
- 5.1.7Derive P = Fv and use it.
Lessons
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Power and the equation P = Fv
35 min
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Work done, conservation of energy and efficiency
35 min
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Sample question
A sample question on this topic. Answer it, check it, then read the worked answer.
Turn Energy conservation into a strength.
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