## Vectors

- Vectors and vector addition
- Lecture (23:42)
*Definition of a vector, addition of vectors geometrically, commutative and associative law of addition, and an example of adding vectors*

- Components of vectors
- Lecture (15:23)
*Projection of a vector onto coordinate axes to get the components of a vector, and an example*

- Unit vectors
- Lecture (19:20)
*Definition of unit vectors to define coordinate axis direction,
and example of adding vectors by components*

- Vectors and the Laws of Physics
- Lecture (6:28)
*Comment emphasizing the point that vectors (and physics in general) are invariant with respect to coordinate systems*

- Products of vectors
- Dot product lecture (13:02)
*Multiplication of a vector by a scalar, and the definition of the scalar dot product of two vectors*

- Cross product lecture (12:00)
*Definition of the vector cross product of two vectors*