1. Vectors
Vectors are a way to describe motion that is not in a straight line.
All measurements can be put into two categories:
Scalars = magnitude
Vectors = magnitude and direction
Ex: velocity = vector
Acceleration = vector
Speed = scalar
Displacement = vector
Distance = scalar

2. Vectors
You can add vectors. The resultant vector represents the sum of two or more component vectors.

3. Properties of Vectors
Vectors can be moved parallel to themselves in a diagram.
Vectors can be added in any order.
To subtract a vector, add its opposite.