What forces do
What forces do
A force is a push or pull, measured in newtons, symbol NNN. Forces can make an object speed up, slow down, change direction, or change shape and size.
Step-by-step lessons on CIE IGCSE Physics 1.5.1a Forces, resultant force and motion. Each one builds up to exam-style questions. Build a strong foundation in mechanics and electricity before tackling the more mathematically demanding astrophysics and nuclear topics.