Mind Network - Samuel Solomon

## Vectors

- What is a vector?
- Adding and subtracting two vectors
- Finding the length/magnitude of a vector
- Finding a unit vector in the direction of a given vector

1. What are vectors?

All vectors have two attributes: a magnitude, and a direction. For example, in physics you'll see that the mass of an object is not a vector because it has a magnitude, but no direction. On the other hand, the gravitational force on an object (its weight) is a vector because it has a magnitude, and a direction that points to the center of the Earth. In 18.02, we'll be