Scalars and Vectors

CSEC Physics Syllabus - Effective for examinations from May - June 2015

Section A - Mechanics

Vectors

Specific Objective 2.1

distinguish between scalars and vectors and give examples of each;

Pixabay

Scalars

Scalars are quantities with magnitude only. Example, mass, time, speed, distance, volume, energy, etc. 

Basic arithmetic (addition and subtraction) can be performed on Scalar Quantities.
Example:

Vectors

Vectors are quantities with magnitude and direction. Example, displacement, velocity, acceleration, force, momentum, etc.

Vectors are represented diagrammatically by straight lines. The length of the line represents the magnitude of the vector and an arrow on the line indicates the direction or line of action of the vector.

Example:

Scalars & Vectors