Momentum Calculator
Momentum, impulse and force.
Enter your values
Results update instantly as you type — no submit needed.
Results
- Momentum
- 18000 kg·m/s
- Change in momentum (impulse)
- -18000 N·s
- Average force
- -45000 N
- Kinetic energy
- 135000 J
- Deceleration
- -37.5 m/s²
Quick answer
Momentum is mass times velocity; changing it requires an impulse equal to force times time.
p = mv, J = Δp = FΔt
How to use the Momentum Calculator
- 1Enter mass in kilograms.
- 2Enter initial and final velocity in m/s.
- 3Enter the time over which the change happens.
Frequently asked questions
Is momentum conserved?
Yes, in any closed system with no external force.
Why do airbags help?
They extend collision time, cutting average force for the same momentum change.