A-Level Maths: Mechanics Revision

Mechanics is a core part of A-Level Maths. Revise the key concepts and common mistakes below, then lock them in with the free games.

Key concepts

Newton's first lawA body remains at rest or moves with constant velocity unless acted on by a resultant force.

Newton's second lawF = ma. Resultant force on a body equals mass times acceleration. Vector equation.

Newton's third lawEvery action has an equal and opposite reaction. Forces come in pairs on different bodies.

Weight & massMass m is amount of matter (kg). Weight W = mg (newtons). On Earth, g ≈ 9.8 N/kg.

FrictionF ≤ μR (where R = normal reaction, μ = coefficient of friction). Limiting friction reached when motion impending.

Resolving forcesSplit forces into perpendicular components (e.g., horizontal/vertical or along/perpendicular to inclined plane).

SUVAT variabless = displacement, u = initial velocity, v = final velocity, a = acceleration, t = time.

v = u + atFinal velocity after time t under constant acceleration.

Where Mechanics sits in each exam board's specification. Tap a board to see what it lists.

AQAForces and Newton's lawsSpec 7357

Part of: Mechanics

AQAQuantities and units in mechanicsSpec 7357

Part of: Mechanics

CCEAQuantities and units in mechanicsSpec 2210

Part of: AS 2 — Applied mathematics (mechanics and statistics)

EdexcelQuantities and units in mechanicsSpec 9MA0

Part of: Mechanics

Learn Mechanics step by step

Free interactive mini-lessons: short screens, worked examples and quick checks. Pick your exam board:

Other boards:OCR

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