Momentum Calculator

Find momentum, mass or velocity with p = mv.

What Do You Want to Find?
Fractions and decimals both work.
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Result
Momentum
Kinetic energy
Impulse to stop it
Work

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Momentum and Impulse

p = m × v   Impulse J = F × Δt = Δp

Momentum has direction: use negative velocity for the opposite direction. In a collision with no outside forces, total momentum is conserved.

Worked Example

Tips

Spreading a stop over more time (a padded glove, crumple zones) lowers the force for the same change in momentum.