IGCSE Physics: Stopping Distance | Edexcel Modular | Unit 1 | L12

IGCSE Physics: Stopping Distance | Edexcel Modular | Unit 1 | L12

This lesson covers spec points 1.19 and 1.20 — knowing that stopping distance = thinking distance + braking distance, and describing the factors affecting each component.

PowerPoint includes:
• Retrieval starter reviewing forces and Newton’s laws
• Direct Instruction (I Do) — stopping distance model introduced with diagram; thinking distance explained (reaction time × speed); braking distance explained (dependent on speed, mass, road and vehicle condition); factors affecting thinking distance: speed, tiredness, alcohol, drugs, distractions; factors affecting braking distance: speed, mass, road condition, tyre and brake condition
• Guided Practice (We Do) — three tasks: classify factors as affecting thinking or braking distance; predict the effect of given changes on stopping distance; interpret a stopping distance data table for different speeds
• Independent Practice (You Do) — evaluate stopping distance scenarios; extended explain questions; analyse stopping distance data and draw conclusions
• Review and Reflect — 3 MCQs and exit ticket

Activity Sheet includes:
• Stopping distance diagram (thinking distance + braking distance = total stopping distance)
• 10 exam-style questions covering factors, explain/describe responses and data analysis tasks
• Stretch question evaluating a claim about the relative importance of different factors
• Full mark scheme for teacher use