# Unit Vector and Components of a Vector

### Unit Vector Notation

This is a series of free Physics Video Lessons from Khanacademy
online Physics series. We also have another series presented by Brightstorm here.

Related Topics:

Vectors

Unit Vectors in Math

Unit Vector Notation: Expressing a vector as the scaled sum of unit vectors

Unit Vector Notation (part 2): More on unit vector notation. Showing that adding the x- and y- components of two vectors is
equivalent to adding the vectors visually using the head-to-tail method.

### Projectile Motion with Unit Vectors

Determining the position vector as a function of time.

Let's see if the ball can clear the wall.

### Projectile Motion with Ordered Set Notation

Solving the second part to the projectile motion problem (with wind gust) using ordered set vector notation.