In these lessons, we will learn how to subtract vectors by adding its negative, how to subtract vectors geometrically using the head-to-tail method and how to subtract vectors using their components.

Related Topics:

Vector Addition, More lessons on Vectors

**What is a vector?**

A vector is a quantity that has magnitude (size) and direction.

**How to represent a vector graphically, in column-vector form and in unit-vector form?**
### How to subtract Vectors?

Subtracting a vector is the same as adding its negative.

The difference of the vectors**p** and **q** is the sum of **p** and –**q**.

**p** – **q** = **p + **(–**q**)
**How to subtract vectors using column vectors and explained graphically?**

**How to subtract vectors graphically?**
**Geometric subtraction of two vectors**

**How to solve word problems using vector subtraction?**
**Vector word problems when given magnitude and direction**

Subtract the following vectors (B - A)

A = 5.0 m at 40 degrees west of North

B = 2.5 m south.

Find the distance and direction of (B - A)**Vector subtraction including boat example**

Introduction to 'head to tail' vector subtraction in the geometric sense. This is then applied to an example of working out a boat's velocity relative to water given the velocity of the current and the velocity of the boat relative to land are both known.

velocity relative to land = water velocity + boat's velocity relative to water

Example:

A woman wants to get to a destination that is due North of her starting point. To do this, she needs to row across a stream. The current is flowing East at 12km/hr. The woman can row the boat at a constant speed of 16km/hr.

What will be the required direction that she must row the boat in order to reach the required destination?

### How to subtract vectors using their components

Subtracting Vectors in Component Form for 2-D and 3-D vectors.
**How to add and subtract vectors in component form?**

Example:

Let u = <-1, 3>, v = <2, 4>, and w = <2, -5>. Find the component form of the vector

u + v

u - w

2u + 3w

2u - 4v

-2u - 3v

You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.

Related Topics:

Vector Addition, More lessons on Vectors

A vector is a quantity that has magnitude (size) and direction.

The difference of the vectors

** Example: **

Subtract the vector **v** from the vector **u**.

* Solution: *

** u ** – **v** = **u** + (–**v**)

Change the direction of vector **v** to get the vector –**v**.

* Check:* The column vector should represent the vector that was drawn.

u - v = u + (-v)

Since we know how to add vectors and multiply by negative one, we can also subtract vectors.

Subtract the following vectors (B - A)

A = 5.0 m at 40 degrees west of North

B = 2.5 m south.

Find the distance and direction of (B - A)

Introduction to 'head to tail' vector subtraction in the geometric sense. This is then applied to an example of working out a boat's velocity relative to water given the velocity of the current and the velocity of the boat relative to land are both known.

velocity relative to land = water velocity + boat's velocity relative to water

Example:

A woman wants to get to a destination that is due North of her starting point. To do this, she needs to row across a stream. The current is flowing East at 12km/hr. The woman can row the boat at a constant speed of 16km/hr.

What will be the required direction that she must row the boat in order to reach the required destination?

Example:

Let u = <-1, 3>, v = <2, 4>, and w = <2, -5>. Find the component form of the vector

u + v

u - w

2u + 3w

2u - 4v

-2u - 3v

Rotate to landscape screen format on a mobile phone or small tablet to use the **Mathway** widget, a free math problem solver that **answers your questions with step-by-step explanations**.

You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.

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