Magnitude and direction
Magnitude and direction
Every physical quantity has a magnitude, which is its numerical size, and a unit. For example, a mass may be 70 kg70 \, \text{kg}70kg and an energy transfer may be 84 kJ84 \, \text{kJ}84kJ.
Step-by-step lessons on Edexcel GCSE Physics 2.1 Vectors and scalars. Each one builds up to exam-style questions. Master the required practical work and core equations early, since both papers can draw on content and maths skills from across the whole specification.