study guides for every class

that actually explain what's on your next test

Air resistance

from class:

College Physics I – Introduction

Definition

Air resistance is a force that opposes the motion of an object through the air. It depends on the object's speed, surface area, and shape.

congrats on reading the definition of air resistance. now let's actually learn it.

ok, let's learn stuff

5 Must Know Facts For Your Next Test

  1. Air resistance increases with the square of an object's velocity.
  2. It acts in the direction opposite to the object's motion.
  3. In projectile motion, air resistance affects both horizontal and vertical components of velocity.
  4. The drag coefficient is a dimensionless number representing an object's resistance to air flow.
  5. Terminal velocity is reached when the force of air resistance equals the force of gravity.

Review Questions

  • How does air resistance affect the horizontal and vertical components of a projectile's motion?
  • What factors influence the magnitude of air resistance acting on an object?
  • Explain how terminal velocity is achieved in terms of forces.
© 2024 Fiveable Inc. All rights reserved.
AP® and SAT® are trademarks registered by the College Board, which is not affiliated with, and does not endorse this website.
Glossary
Guides