Chapter 3
Vectors
In Physics we have
parameters that can be completely described by a
number and are known as
“scalars”
.Temperature, and mass are such
parameters
Other physical parameters require additional information about direction and
are known as
“vectors”
. Examples of vectors are displacement, velocity
and acceleration.
In this chapter we learn the basic mathematical language to describe
vectors.
In particular we will learn the following:
Geometric vector addition and subtraction
Resolving a vector into its components
The notion of a unit vector
Addition and subtraction of vectors using vector components
Multiplication of a vector by a scalar
The scalar (dot) product of two vectors
The vector (cross) product of two vectors
(3-1)

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