S2 Physics Transport and Forces revision page

Overview

Revise the full topic: speed, forces, resultant forces, friction, mass & weight, magnetism, and electromagnets. Use the resources first, then rate your confidence (Green/Amber/Red) as you go.

⭐ Start here: Practice Test ↗

Tip: practise little-and-often — do one topic, mark it, fix mistakes, then re-try.

How to use (simple routine)

Your aim: find what you don’t know yet, fix it, then practise again.

✅ Best routine (20–25 mins)Repeat
  1. 8–10 mins: practise one topic (Speed / Forces / Friction / etc.).
  2. 5 mins: check answers and highlight missing key words / units.
  3. 5 mins: use KO / slides to fix the weak bits.
  4. 2–5 mins: rate confidence (Green/Amber/Red) and re-try one question.
⏱️ One timed runOnce
  • Do the Practice Test with no notes.
  • Mark it, then write corrections in a different colour.
  • Re-attempt the questions you missed after 24 hours.

Resources

Start with the Practice Test. Use the others to fix mistakes and learn key ideas.

⭐ Practice Test MAIN

Attempt → mark → fix mistakes → re-try.

📄 Knowledge Organiser core

Key ideas and key words for quick recall.

🧾 Equation Sheet must know

v = d/t and W = m×g — learn units and rearranging.

✅ Success Criteria what good looks like

Use this when marking your answers.
🏁 Speed question packspractice

🏁 Speed Questions calc

Build confidence with v = d/t.

🧪 Speed Experiment Questions skills

Measuring, reliability, and improvements.
📽️ Slides + KBCrecap

📽️ Class Slides learn

Use to fix the parts you got wrong.

🗂️ KBC Sheet quiz

Quick questions to check memory.
🟣 Answers (use after you’ve tried the test)check
🟣 Practice Test Answers ↗
Try the test first. Then use the answers to check, fix mistakes, and retest yourself.

Topics (open one at a time)

Learn the key idea, practise, then rate your confidence.

1) 🏁 Speedv = d ÷ t

Key ideas

  • Speed = distance travelled per second.
  • Symbols: v speed, d distance, t time.
  • Units: m/s, m, s.

Equation

v = d / t (so d = v×t and t = d / v)

Always include the unit in your final answer.

Measuring speed

  • Stopwatch + measured distance
  • Light gates + measured distance

Improve accuracy

  • Repeat and average
  • Use a longer distance
  • Use a more precise timer
2) 🫸 Forces (basics)push / pull

Key ideas

  • A force is a push or a pull.
  • A force can change an object’s speed, direction, or shape.
  • Unit of force: newton N.

Measuring force

  • Use a spring balance (Newton meter).
  • Read the scale carefully (watch the unit!).
3) ↔️ Resultant force & free body diagramsbalanced vs unbalanced

Key ideas

  • Resultant force = the overall effect of all forces.
  • Balanced: resultant = 0 N → speed stays the same (or stays still).
  • Unbalanced: resultant ≠ 0 N → speed and/or direction changes.

Free body diagrams (FBD)

  • Draw forces as arrows on a simple object.
  • Arrow direction = force direction.
  • Longer arrow = bigger force (if drawn to scale).
4) 🛞 Frictionopposes motion

Key ideas

  • Friction is a force that opposes motion.
  • Friction turns kinetic energy into heat (and sometimes sound).
  • If engine force = friction → constant speed.

Reduce / use friction

  • Reduce: lubrication, smoother surfaces, bearings.
  • Useful: brakes, tyres on road, gripping.
  • Nuisance: wear, heating, slowing down.
5) 🌍 Mass & weightW = m × g

Key ideas

  • Mass = amount of matter (unit kg).
  • Weight = force due to gravity (unit N).
  • g has unit N/kg.

Equation

W = m × g

  • Mass stays the same on all planets.
  • Weight changes because g changes.
6) 🧲 MagnetismN → S field lines

Key ideas

  • Magnets have 2 poles: North and South.
  • Unlike poles attract, like poles repel.
  • Magnets make a magnetic field around them.

Field lines

  • Draw field lines from N → S.
  • Iron filings can show the field shape.
7) 🔋 Electromagnetscoil + iron core + current

Key ideas

  • An electromagnet is a magnet you can switch on/off using electricity.
  • Make one using a coil of wire around an iron core.

Make it stronger

  • More turns (coils of wire).
  • Higher supply voltage (more current).
  • Use an iron core.
✨ Extension (WIP)air resistance / parachutes
Space reserved for extra notes, diagrams, and questions.

Confidence (Green / Amber / Red)

Tap each statement and choose Green, Amber, or Red. This saves on this device.

📈 Mean: —
🟩 0 🟧 0 🟥 0 ⬜ 0
Green • Amber • Red