Subtraction of vectors
It is defined as addition of the negative vector,
The vector  b is a vector of the same magnitude as b is along the same line or parallel line to that of
b but just in opposite directions, as shown in fig. 3.
Multiplication of vectors
Physical quantities like work, flux are scalar quantities with which two vectors are expressed as scalar
or dot products of two vectors. On the other hand quantities like angular momentum, force on a
moving charge in a magnetic field are vectors with which two vectors are associated. They expressed as
vector cross product of two vectors.

Index
Classical Mechanics
1.1 Definitions
1.2 Vector Algebra
Chapter 2
