Scalar and vector quantities

• What is a scalar quantity?

  A scalar quantity is a physical quantity that has magnitude but no direction.
• Name some examples of scalar quantities

  Temperature

  Mass

  Energy

  Distance

  Speed

  Density
• How can the sum of scalar quantities be found?

  By adding their values together
• What is a vector quantity?

  A quantity that has both magnitude and direction
• Name some examples of vector quantities

  Force

  Displacement

  Velocity

  Acceleration

  Momentum
• How can the direction of a vector be given by?

  A written description, or drawn as an arrow.
• What does the length of an arrow represent?

  The magnitude of the quantity