Impulse

Summary

Impulse is the change in linear momentum over time.

Key Equations:

Impulse in general:
$I = \int_{t_{i}}^{t_{f}} F (t) d t$

Impulse if force is constant:
$I = F Δ t$

Read Time

⏱ 1 min

Definition

Impulse is the change in linear momentum over time. It describes the change in forces over a time period. Sometimes impulse is denoted as $I$ or $J$

Warning

This definition uses that $F = \frac{d p}{d t}$ from Newton's second law to simplify reasoning and math

\begin{matrix} F = \frac{d p}{d t} \\ I = \int_{t_{i}}^{t_{f}} F (t) d t \\ If F is consant the equation becomes \\ I = F Δ t \end{matrix}

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