AP Physics B

AP Physics B covers fundamental concepts in physics, including mechanics, thermodynamics, and waves, preparing students for college-level physics courses.

Advanced Topics

Fluid Mechanics

Understanding Fluids

Fluids (liquids and gases) behave differently from solids. Fluid mechanics studies how they flow and respond to forces.

Key Principles

  • Buoyancy: Why objects float or sink, explained by Archimedes’ Principle.
  • Bernoulli’s Principle: As the speed of a fluid increases, its pressure decreases.
  • Viscosity: The "thickness" or resistance to flow.

Everyday Examples

Fluid mechanics explains how airplanes fly, why boats float, and how blood moves through arteries.

Examples

  • A soccer ball curves in mid-air due to changes in air pressure.

  • Helium balloons rise because they are less dense than air.

In a Nutshell

Fluid mechanics explores the behavior of liquids and gases in motion and at rest.