IGCSE Physics: F=ma | Edexcel Modular | Unit 1 | L10

IGCSE Physics: F=ma | Edexcel Modular | Unit 1 | L10

This lesson covers spec point 1.17 — knowing and using the relationship between unbalanced force, mass and acceleration: F = ma.

PowerPoint includes:
• Retrieval starter reviewing resultant force and friction from L9
• Direct Instruction (I Do) — Newton’s Second Law stated; F = ma introduced in words and symbols; each variable defined with units; worked examples calculating force, mass and acceleration with full rearrangement; link made between resultant force and F = ma
• Guided Practice (We Do) — three calculations: find force from mass and acceleration; find acceleration from resultant force; find mass from force and acceleration
• Independent Practice (You Do) — F = ma in real-world contexts; multi-step problems combining resultant force with F = ma; predict motion from calculated acceleration
• Review and Reflect — 3 MCQs and exit ticket

Activity Sheet includes:
• Formula box: F = m × a
• 10 exam-style questions including straightforward calculations, all three rearrangements, and multi-step problems requiring a resultant force to be found first
• Stretch question requiring a two-step solution: find resultant force then calculate acceleration
• Full mark scheme for teacher use