# Vectors

We will learn about two-dimensional vectors which are quantities that have both magnitude and direction.

**Learning Objectives:**

- Definition of a vector and its component form
- Equality of two vectors
- Vector arithmetic and properties
- Vector Addition
- Scalar Multiplication

- Magnitude and direction of a vector, and their properties
- Unit vector
- Principal unit vector in the direction of positive x and y axes
- Writing a vector in different forms
- component form
- principal unit vector form
- magnitude and cosine and sine functions

- Application to equilibrium of forces acting on a body