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Speed - GCSE Physics Definition

Reviewed by: Caroline Carroll

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In GCSE Physics, 'speed' refers to how quickly something is moving, and it is a measure of distance covered in a given time. It is a scalar quantity, meaning it only has magnitude, and does not take into account the direction. Speed is typically measured in metres per second (m/s), and can be calculated using the formula:

speed = distance ÷ time

Where:

  • distance is how far the object has travelled (measured in metres, m)

  • time is the duration taken (measured in time, s)

Understanding speed is essential for analysing motion and helps in distinguishing it from velocity, which additionally considers the direction of travel.

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Caroline Carroll

Reviewer: Caroline Carroll

Expertise: Physics & Chemistry Subject Lead

Caroline graduated from the University of Nottingham with a degree in Chemistry and Molecular Physics. She spent several years working as an Industrial Chemist in the automotive industry before retraining to teach. Caroline has over 12 years of experience teaching GCSE and A-level chemistry and physics. She is passionate about creating high-quality resources to help students achieve their full potential.

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