1.1. Scalars and Vectors

•  Physical quantities are that require both magnitude and direction for their description   are said to be vectors.

• The sum of two vectors is always vector

• The difference of two vectors a vector

• Vector addition is commutative where is vector subtraction is not,

• The product of a vector by scalar always gives a vector

• Vector multiplication is not commutative.

• The vector product of two vectors is always a vector

   Example: Displacement, Velocity, force and etc