๐Ÿงฒap physics 2 review

Continuity Equation

Written by the Fiveable Content Team โ€ข Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 examโ€ขWritten by the Fiveable Content Team โ€ข Last updated September 2025

Definition

The continuity equation states that the mass flow rate of a fluid is constant in a closed system, meaning that the amount of fluid entering a section must be equal to the amount leaving it.