---
title: "Velocity-Time Graph — AP Physics C Mechanics Guide"
description: "A velocity-time graph plots velocity vs. time: its slope is acceleration and the area under it is displacement. Master both readings for AP Physics C kinematics."
canonical: "https://fiveable.me/ap-physics-c-mechanics/key-terms/velocity-time-graph"
type: "key-term"
subject: "AP Physics C: Mechanics"
---

# Velocity-Time Graph — AP Physics C Mechanics Guide

## Definition

A velocity-time graph is a graphical representation that shows how an object's velocity changes over time. It plots the velocity of an object on the y-axis and time on the x-axis.

## Related Study Guides

- [Unit 1 Overview: Kinematics](/ap-physics-c-mechanics/unit-4ne1t5G1jHXS2vNJ/review/study-guide/aJqbwkcR7wmbatmiXnwc)

## Review

### Related Terms

- [Displacement](/ap-physics-c-mechanics/key-terms/displacement): The change in position of an object. For example, if you start at point A and end up at point B, your displacement is the straight-line distance between those two points.
- [Acceleration](/ap-physics-c-mechanics/key-terms/acceleration): The rate at which an object's velocity changes over time. If you're driving in a car and step on the gas pedal to go faster, you're experiencing acceleration.
- Constant Velocity: When an object's velocity remains unchanged over time. If you're driving in a straight line at a constant speed, your velocity remains constant.