What is Impulse?

Impulse It is not convenient to measure the varying force of impact. Suppose that $\vec{F}_{\mathrm{av}}$ is the average force acting during impact and $t$ is the small time for which the impact lasts. In such situations, it is found that the quantity $\vec{F}_{\mathrm{av}} \cdot \mathrm{t}$ is very easy to measure. The quantity $\vec{F}_{\text {av }} \cdot t$ is called impulse. If a variable force acts on a body or particle for a interval of time $t_{1} \rightarrow t_{2}$ Impules is $\vec{I}=\i...