Impulse Calculator
Impulse from force and time, or from momentum change.
Enter your values
ⓘ Live results
Results
- Impulse
- 100 N·s
- Resulting velocity change
- 100 m/s
- Force
- 500 N
- Time
- 0.2 s
Quick answer
Impulse J = F x t, and also equals the change in momentum m x delta v.
J = F x t = m x delta v
How to use the Impulse Calculator
- 1Enter the average force applied and the time it acts for.
- 2Enter the mass to see the resulting change in velocity.
- 3Use this to compare, say, a padded landing versus a hard one.
Worked example
Using the values the calculator loads with:
Inputs
- Average force500 N
- Contact time0.2 s
- Mass1 kg
Results
- Impulse100 N·s
- Resulting velocity change100 m/s
- Force500 N
- Time0.2 s
Frequently asked questions
Why does padding reduce injury?
Padding extends the contact time, so for the same impulse the peak force is lower.
Is impulse a vector?
Yes, it has direction, same as force and momentum.
About this calculator
- Built and reviewed by James Whitfield · How we build and test calculators
- Report an error
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.