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This comprehensive Pearson Edexcel IAL Physics Unit 1 (WPH11/01) Master Revision Guide covers Mechanics and Materials in full. Aligned with the 2019–2025 exam series and based on Principal Examiner Reports (2019–2024).

What’s inside?

Priority heatmap – Critical topics appear nearly every sitting: SUVAT, v-t graphs (gradient = acceleration, area = displacement), Newton’s 2nd Law & terminal velocity, energy conservation (KE ↔ GPE), Young modulus calculations, force-extension graphs (limit of proportionality, elastic limit, yield point), momentum conservation, Stokes’ law (CP2), Hooke’s law, and moments.

Top 15 penalised errors – Omitting units, using g=10 instead of 9.81, confusing mass and weight, not showing working, gradient from data points (not line of best fit), confusing elastic limit with limit of proportionality, missing ‘perpendicular distance’ in moments, and using diameter instead of radius in stress calculations.

Core practicals (CP1–CP3) – CP1 (free fall – s vs t² graph, gradient = g/2), CP2 (falling ball viscosity – Stokes’ law, r² uncertainty), CP3 (Young modulus wire – long wire, diameter with micrometer, stress-strain graph).

Maths skills – Worked examples for multi-step SUVAT, Young modulus from wire data (6-step method: convert units, A=πr², stress, strain, E, check), energy conservation with friction, and elastic strain energy from non-linear graphs (counting squares).

Model answers – 1-mark to 6-mark extended writing, including terminal velocity explanation (cause → effect → equilibrium → conclusion).

Exam predictions – High-confidence: Young modulus calculation, terminal velocity mechanism (4–6 mark extended writing), v-t graph analysis, momentum conservation, and force-extension graph labelling.

Teacher tools – Diagnostic activities, common misconceptions register, differentiated revision (support/core/stretch), and classroom starters/exit tickets.

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