What is it
This topic covers scalar and vector quantities, resultant forces, Newton's three laws of motion, momentum, stopping distances, and calculations involving speed, acceleration, force and momentum using velocity-time and distance-time graphs.
Why it matters
Forces is typically the single largest topic on the GCSE physics paper by mark allocation, and graph-interpretation plus multi-step calculation questions here are a major source of higher-tier marks.
Exam tip
Practise finding acceleration from the gradient of a velocity-time graph and distance from the area under it — these two graph skills are tested on nearly every physics paper.
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