Cambridge AS & A Level Mathematics
4.5Energy, work and power
Energy, work and power in Cambridge AS & A Level Mathematics: what the syllabus expects you to know, the learning objectives and how to practise.
Topic41 practice questions2 lessons
Learning objectives
What the syllabus expects you to be able to do.
- 4.5.1Calculate the work done by a constant force whose point of application moves, not necessarily along the force.
- 4.5.2Use the formulae for gravitational potential energy and kinetic energy.
- 4.5.3Relate the change in energy of a system to the work done by external forces and use conservation of energy where appropriate.
- 4.5.4Use power as the rate of doing work and P = Fv for a force along the motion.
- 4.5.5Solve problems such as the instantaneous acceleration of a car on a hill against resistance.
Lessons
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Power: the rate of doing work
45 min
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Work, energy and the work–energy principle
55 min
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Sample question
A sample question on this topic. Answer it, check it, then read the worked answer.
Turn Energy, work and power into a strength.
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