IP Physics Notes (Upper Secondary, Year 3-4): 6) Work, Energy & Power
In one line
Link work to energy transfers, apply conservation for height-speed swaps, and compute power and efficiency in IP Year 3-4 contexts.
Last updated 30 Nov 2025
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- Start Here
- Energy Forms & Key Equations
- Principle of Conservation of Energy
- Work Done
Q: What does IP Physics Notes (Upper Secondary, Year 3-4): 6) Work, Energy & Power cover?
A: Link work to energy transfers, apply conservation for height-speed swaps, and compute power and efficiency in IP Year 3-4 contexts.
Quick recap -- Energy tracks the ability to do work. When forces move objects they transfer energy, and the total energy in a closed system stays constant even as it changes form.
Start Here
| Read time | What to take away |
| 1 second | Work transfers energy when a force moves something. |
| 10 seconds | Match the energy store to the situation: kinetic for speed, gravitational potential for height, elastic for springs, and power for energy transferred per second. |
| 100 seconds | Use the sledge and conservation examples to practise writing the energy pathway, calculating work, allowing for losses, and checking efficiency or power units. |
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These notes align with SEAB GCE O-Level Physics (6091) content used in IP programmes (exams from 2026).
Status: SEAB O-Level Physics 6091 syllabus (exams from 2026) checked 2025-11-30 - scope unchanged; remains the reference for these notes.
Energy Forms & Key Equations
- Energy is the capacity to do work. SI unit:
