---
title: "Vector Sum — AP Physics 1 Definition & Exam Guide"
description: "A vector sum combines vectors so both magnitude AND direction count. It's how you find net force, total momentum, and Δp on the AP Physics 1 exam."
canonical: "https://fiveable.me/ap-physics-1-revised/key-terms/vector-sum"
type: "key-term"
subject: "AP Physics 1"
---

# Vector Sum — AP Physics 1 Definition & Exam Guide

## Definition

The vector sum is the result of adding two or more vectors together using vector addition. It represents both magnitude and direction.

## Related Study Guides

- [5.2 Representations of Changes in Momentum](/ap-physics-1-revised/unit-5/representations-changes-momentum/study-guide/4Q0Vl38t8Nyyg3IrRXtf)
- [Unit 3 FRQ (Circular Motion & Gravitation)](/ap-physics-1-revised/unit-Udr75ggSrboDhyB7/unit-3-frq-circular-motion-gravitation/study-guide/RFRmZgoHi2AwUw4p6gtm)

## Review

### Related Terms

- [Resultant Vector](/ap-physics-1-revised/key-terms/resultant-vector): The single vector that represents the vector sum of multiple vectors.
- Scalar Quantity: A physical quantity that only has magnitude but no specific direction.
- Component Vectors: Vectors that can be added together to form a resultant vector.