✨ Free preview
🎢
Energy and motion
Calculate kinetic and gravitational potential energy and apply conservation of energy to moving objects.
⏱ 19 min❓ 8 questions
What you'll be able to do
- ✔I can calculate kinetic energy using Ek = ½mv² and gravitational potential energy using Ep = mgh
- ✔I can apply conservation of energy to find the speed or height of a moving object
- ✔I can explain why real systems lose useful mechanical energy to thermal energy and sound
How this works
- 1Read the short explanations first — they teach you what you need before each question.
- 2Answer each question, then tap Check. A right answer moves you on automatically; if it's wrong, you'll see a friendly explanation of why.
- 3Finish all 3 steps to see your score — sign in and subscribe to unlock the full lesson and save it.
What's inside
8 questions and 1 quick teaching card, including:
- 🔢Number answer — Work out the answer and type the number.
👪Grown-up tip: sit alongside younger learners for the first few lessons. Read the questions together and chat about the explanations — that's where the real learning sticks.
Sign in and subscribe to unlock the full lesson and save your progress.
Curriculum: AC9S10U05