Energy resources
Physics, grade 9. Notes, worksheets, videos, interactive tools and revision materials for this chapter.
Notes
Study notes
The chapter's lessons are the notes — read them in order, then use the resources below.
01Kinetic EnergyCalculating the energy of moving objects with E = ½mv².Read lesson →02Potential EnergyWorking with gravitational potential energy, E = mgh, and stored elastic energy.Read lesson →03Energy TransfersTracing energy as it moves between stores, from batteries to bouncing balls.Read lesson →04Conservation and EfficiencyUsing the conservation of energy and calculating the efficiency of devices.Read lesson →
Worksheets
Practice worksheet
Attempt every question before revealing the answer — that struggle is where learning happens.
Practice questions live inside each lesson — work through them there, then return for revision.
Videos
Watch and learn
Hand-picked searches to find a clear video explanation of each lesson.
Revision
Revision checklist
Can you explain each of these out loud, without looking? If not, re-read that lesson.
- Kinetic Energy: Calculating the energy of moving objects with E = ½mv².
- Potential Energy: Working with gravitational potential energy, E = mgh, and stored elastic energy.
- Energy Transfers: Tracing energy as it moves between stores, from batteries to bouncing balls.
- Conservation and Efficiency: Using the conservation of energy and calculating the efficiency of devices.
- Read each lesson's summary and re-do its practice questions from memory.