IGCSE Physics Practice Exam 2026 - Free International General Certificate of Secondary Education Practice Questions and Study Guide

Quantities that possess both magnitude and direction are classified as vectors. Unlike scalar quantities, which only have magnitude (such as mass, temperature, or distance), vector quantities require direction for a complete description. Examples of vector quantities include force, velocity, and displacement. Understanding that vectors have both components is crucial in fields such as physics and engineering, where direction can significantly affect the outcome of a problem involving motion or forces.

In contrast, scalars do not involve direction, constants refer to fixed values that do not change, and variables represent quantities that can change according to the circumstances or conditions of a given problem. The distinction between these types of quantities is essential in accurately analyzing situations in physics.