Physics Laws & Theorems
Intermediate

Conservation of Momentum

Total momentum is conserved without external forces.

Formula

∑pi=∑pf\sum p_i = \sum p_f

Variables

pMomentum
i,fInitial/final

Example

Basis of collision analysis

Did You Know?

Total momentum is conserved in every collision, which is how physicists reconstruct car crashes and particle smashups.

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