IGCSE Physics: Momentum | Edexcel Modular | Unit 1 | L16

IGCSE Physics: Momentum | Edexcel Modular | Unit 1 | L16

This lesson covers spec points 1.25P and 1.27P — knowing and using momentum = mass × velocity, and using conservation of momentum to calculate mass, velocity or momentum of objects. Physics only.

PowerPoint includes:
• Retrieval starter reviewing F = ma and forces
• Direct Instruction (I Do) — momentum defined as a vector quantity; p = mv introduced with units; conservation of momentum stated; three collision types modelled with before-and-after diagrams: perfectly inelastic (objects stick together), elastic (objects bounce apart), and explosion (objects start from rest and push apart); worked example for each type
• Guided Practice (We Do) — three collision scenarios: find velocity after a perfectly inelastic collision; find the velocity of one object after a bounce; find the velocity of one object after an explosion
• Independent Practice (You Do) — p = mv calculations; conservation of momentum applied to all three collision types; finding unknown mass and velocity
• Review and Reflect — exit ticket

Activity Sheet includes:
• Formula box: p = m × v
• Before-and-after collision diagrams for all three collision types
• 10 exam-style questions covering momentum calculations and conservation of momentum across all collision types, including finding unknown mass and velocity
• Stretch question requiring students to find the velocity of one object in an explosion given the mass and velocity of the other
• Full mark scheme for teacher use