Elastic Collision Calculator

Calculate final velocities in a perfectly elastic collision

Mass (kg):

Initial Velocity (m/s):

Mass (kg):

Initial Velocity (m/s):

v1' = ((m1-m2)*v1 + 2*m2*v2) / (m1+m2)

v2' = ((m2-m1)*v2 + 2*m1*v1) / (m1+m2)

In elastic collisions, both momentum AND kinetic energy are conserved.

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MyCalcBuddy Editorial Team

This page is maintained as an educational calculator reference.

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Formula Source: University Physics

by Young & Freedman

ðŸ”„Last reviewed: May 2026

âœ“Formula checks are based on standard references and internal QA review.