Work, Energy and Power

Understandings:

• Kinetic energy
• Gravitational potential energy
• Elastic potential energy
• Work done as energy transfer
• Power as rate of energy transfer
• Principle of conservation of energy
• Efficiency

Applications and skills:

• Discussing the conservation of total energy within energy transformations
• Sketching and interpreting force–distance graphs
• Determining work done including cases where a resistive force acts
• Solving problems involving power
• Quantitatively describing efficiency in energy transfers

Guidance:

• Cases where the line of action of the force and the displacement are not parallel should be considered
• Examples should include force–distance graphs for variable forces