Cambridge IGCSE Physics · Syllabus 0625 · Motion, Forces and Energy
Impulse
What is Impulse?
Impulse is defined as force multiplied by the time for which the force acts, and it is equal to the change in momentum produced. Impulse equals F times delta t equals delta of m v, and it is measured in newton seconds, which are equivalent to kilogram metres per second.
This definition is part of the Motion, Forces and Energy chapter in Cambridge IGCSE Physics.
Examiner tips on Impulse
- What the tier labels do and do not mean A Supplement block is extra depth on the same physics, not harder wording of Core physics. It is not revision of what you have just read. Being a Core candidate does not mean a reduced practical standard. Papers 5 and 6 assess both routes against the same experimental-skills framework, so every practical section on this page is for everyone. Topic 1 is unusual in one way worth knowing now: momentum and impulse are Supplement in their entirety, and so are \(F = ma\), \(E_k = \tfrac{1}{2}mv^2\), \(\Delta E_p = mg\Delta h\) and \(\Delta p = \rho g \Delta h\). If you are a Core candidate and a question hands you one of those equations, you are looking at an Extended paper.
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