This video calculates the null space of a matrix.

This video shows the proper orientation of a boundary given the orientation of the normal vector.

Projectile motion problems got you scratching your head? This video walks you through figuring out the horizontal displacement for a projectile launched at an angle. [12:46]

Through a combination of a slide show and a video lesson, learn all about forces. [1:56]

Learn about vectors and scalars in physics, and find out how they are related to distance and displacement. [5:19]

A video tutorial on how to use the parallelogram rule to combine vectors. Tutorial gives step-by-step instruction with an example of the process of adding vectors. [4:11]

A video presentation explaining the parallelogram rule for combining non-parallel vectors. [4:54]

Watch this video tutorial, and learn how to use free-body diagrams to determine the net force acting on an object. [8:56]

This lesson explains how average velocity can be represented by a positive or negative sign. It is 1 of 2 in the series titled "Average Velocity & Sign Notation." [6:44]

Vectors have both length and a direction. Follow along with this tutorial to learn about vectors and their parts and also how to name one. [3:09]

Two-Dimensional motion giving you a headache? Then watch this video lecture to help with visualizing, adding and breaking down vectors in two dimensions. Lecture includes examples and step-by-step problems. [12:53]

Through a combination of a slide presentation and a video lecture, learn how to solve a projectile motion problem involving a baseball. [14:29]

Explains how to find the x- and y-components of a vector given its graph. [3:17]

This video will review over the concept of acceleration. Learn the definition, how you measure it, and what a vector quantity means. [9:05]

Sal Khan explains how to derive the formula for centripetal acceleration in terms of angular velocity using linear speed formula. [5:29]

See an example of how you can start to understand how the formula for a three-dimensional vector field relates to the way it looks.

You want a projectile to fly as far as possible, at which angle should you launch it? We'll start with formulas for the initial velocity. [5:49]

This lesson demonstrates how to find the vertical and horizontal components of vectors. It is 2 of 2 in the series titled "Finding Vector Components."

This lesson demonstrates how to find the vertical and horizontal components of vectors. It is 1 of 2 in the series titled "Finding Vector Components."

This lesson explain why force is considered a vector. It is 2 of 2 in the series titled "Force & Vectors."

This lesson explain why force is considered a vector. It is 1 of 2 in the series titled "Force & Vectors."

This lesson explains when and why vectors can be added or subtracted from one another. It is 2 of 2 in the series titled "Introduction to Combining Vectors."

This lesson introduces the concepts of vectors and scalars and explains how they are related to distance and displacement. It is 2 of 3 in the series titled "Introduction to Vectors & Scalars."

This lesson provides the learner with example problems on adding and subtracting parallel vectors. It is 2 of 2 in the series titled "Practice Adding & Subtracting Parallel Vectors."