---
title: "Centripetal Acceleration — AP Physics C Mechanics Guide"
description: "Centripetal acceleration (a = v²/r) points toward the center of a circular path. Learn how it links velocity, angular velocity, and centripetal force on the AP exam."
canonical: "https://fiveable.me/ap-physics-c-mechanics/key-terms/centripetal-acceleration"
type: "key-term"
subject: "AP Physics C: Mechanics"
---

# Centripetal Acceleration — AP Physics C Mechanics Guide

## Definition

Centripetal acceleration is the acceleration experienced by an object moving in a circular path. It is always directed towards the center of the circle and its magnitude can be calculated using the equation a = v^2/r, where v is the velocity of the object and r is the radius of the circle.

## Related Study Guides

- [2.2 Circular Motion](/ap-physics-c-mechanics/unit-2/circular-motion/study-guide/J3TY6bozUdJq3tvUhWID)

## Review

### Related Terms

- [Centripetal Force](/ap-physics-c-mechanics/key-terms/centripetal-force): This term refers to the force that acts towards the center of a circular path, causing an object to move in that path.
- [Mass](/ap-physics-c-mechanics/key-terms/mass): Mass is a measure of how much matter an object contains. It determines an object's inertia and its resistance to changes in motion.
- [Velocity](/ap-physics-c-mechanics/key-terms/velocity): Velocity is a vector quantity that describes both speed and direction. It represents how fast an object is moving in a specific direction.