Physics — Laws, Formulas & Derivations

The formulas and laws students look up, explained from the idea up rather than handed over to memorise.

Physics concepts

Impulse Formula

Impulse (J) is the product of a force and the time it acts for: J = F × t. It is equal to the change in momentum an object experiences, so J = Δp = mv − mu. Its SI unit is the newton-second (N·s), which is the same as kg·m/s.

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