Basic Concepts of Vectors
Quantities that have both a magnitude and a direction, and how to add them.
What is a Vector?
A vector $\vec{a}$ has both magnitude and direction, and can be represented in component form as $a_1\hat{i} + a_2\hat{j} + a_3\hat{k}$.
Magnitude of a Vector
$$|\vec{a}| = \sqrt{a_1^2 + a_2^2 + a_3^2}$$Lesson 23 of 32