Vectors and Scalars

• Vector

  A quantity that has both magnitude and direction
• Scalar

  A quantity that has only magnitude and no direction
• How can a vector quantity be represented?

  By an arrow with varying length
• How is the magnitude of a vector quantity represented?

  By the length of the line
• How is the direction of a vector quantity represented?

  By the direction the arrow is pointing
• State examples of scalar quantities:

  • Temperature
  • Mass
  • Speed
  • Distance
• State examples of vector quantities:

  • Velocity
  • Displacement
  • Acceleration
  • Weight
  • Momentum