EngiRef / Mechanical Engineering Formula
Impulse
Impulse: Change in momentum from force over time. A Dynamics formula in mechanical engineering. Variables J, F and Δt, each with SI and imperial units.
Dynamics
Specification
- Name
- Impulse
- Discipline
- mechanical
- Category
- Dynamics
- LaTeX
- J = F \cdot \Delta t
- Description
- Change in momentum from force over time
- Conditions
- Use for constant or average force over the interval
- Can solve for
- J, F, Δt
- Tags
- impulse, force, time, momentum
Variables
| Symbol | Name | Unit | Si Unit | Imperial Unit |
|---|---|---|---|---|
| J | Impulse | N·s | N·s | — |
| F | Force | N | N | lbf |
| Δt | Time Interval | s | s | — |