# Impulse

The *impulse* of a force is the product of the force and the time interval during which it acts. It represents the change of linear momentum.

$J=Δp =F_{average}Δt$

- The units of impulse are the same as those of momentum
- Impulse represents the vector change in linear momentum

### Impulse-momentum theorem

The change in momentum of a particle during a time interval is equal to the impulse of the net force acting on the particle during that interval.

### Angular Impulse

The change in Angular Momentum is called angular impulse. $ΔL=τ_{net}Δt$