IGCSE Maths / Calculus
Kinematics: displacement, velocity and acceleration
Edexcel International GCSE Maths (4MA1), chapter 28: Calculus, specification point 3.4e. Part of the full course.
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In straight-line motion, differentiating displacement gives velocity, and differentiating velocity gives acceleration. Knowing which quantity to use helps you answer questions about motion, including when a particle is at rest and which direction it is travelling.