OCRā¢A-Levelā¢Mathematics
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Quantities and Units in Mechanics
SI units, scalars, vectors, and modelling assumptions
Practice 15 subtopics in Quantities and Units in Mechanics. All questions match the OCR A-Level specification.
About Quantities and Units in Mechanics
Quantities and Units in Mechanics is a key topic in the OCR A-Level Mathematicsspecification. This topic covers si units, scalars, vectors, and modelling assumptions.
Master all 15 subtopics below with unlimited AI-generated questions. Each subtopic page includes sample questions and the ability to generate unlimited practice questions with detailed solutions.
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SI base units: m, kg, sDerived units: N, m/s, m/sĀ²Fundamental and derived quantitiesDimensional consistencyScalar quantities (mass, time, speed, distance, energy)Vector quantities (displacement, velocity, acceleration, force, momentum)Magnitude and directionRepresenting vectorsMathematical modelling in mechanicsParticle modelRigid body modelModelling assumptionsSmooth and rough surfacesLight and inextensible stringsLimitations of models
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Start with SI base units: m, kg, s