Scalar and Vector Quantities

Scalar Quantity

  1. Scalars are quantities which are fully described by a magnitude alone. 
  2. Magnitude is the numerical value of a quantity. 
  3. Examples of scalar quantities are distance, speed, mass, volume, temperature, density and energy. 

Vector Quantity

  1. Vectors are quantities which are fully described by both a magnitude and a direction. 
  2. Examples of vector quantities are displacement, velocity, acceleration, force, momentum, and magnetic field.

Example:
Categorize each quantity below as being either a vector or a scalar.

Speed, velocity, acceleration, distance, displacement, energy, electrical charge, density, volume, length, momentum, time, temperature, force, mass, power, work, impulse.
Answer:
Scalar Quantities:
  • speed 
  • distance 
  • energy 
  • electrical charge 
  • density 
  • volume 
  • length 
  • time 
  • temperature 
  • mass 
  • power 
  • work
Vector Quantities
  • velocity 
  • acceleration 
  • displacement 
  • momentum 
  • force 
  • impulse

Recommended Video



External Link
Vectors - An Introduction
Vectors by Uni. of Guelph
Electronic Science Tutor - Introduction to Vector