Vectors and Scalars

• What are the two types of physical quantities discussed?

  Scalars and vectors
• What defines a scalar quantity?

  It has only magnitude, no direction
• What is an example of a scalar quantity?


  Speed
• What does magnitude refer to in physical quantities?

  It refers to size or numerical value
• If a car travels at $22 \text{ m/s}$, what is the magnitude of its speed?


  $22 \text{ m/s}$
• Which of the following is NOT a scalar quantity?

  Velocity
• What distinguishes vector quantities from scalar quantities?

  Vectors have both magnitude and direction
• Name two examples of vector quantities.

  Velocity and force
• How does distance differ from displacement?

  Distance has no direction, displacement does
• If you walk three kilometers without a specified direction, what type of quantity is this?

  Scalar quantity
• What happens when you specify a direction while walking three kilometers?

  It becomes a vector quantity
• How can vectors be visually represented?

  Using arrows indicating magnitude and direction
• How would you represent a vector of four kilometers north?

  An arrow pointing upwards, length four
• What does a negative vector indicate?

  It points in the opposite direction
• How can you label a vector pointing west?

  As minus two kilometers east
• What are the key differences between scalars and vectors?

  • Scalars: Only magnitude, no direction
  • Vectors: Both magnitude and direction
• What are some examples of scalar and vector quantities?

  • Scalar examples: Distance, mass, temperature, time
  • Vector examples: Velocity, displacement, acceleration, force, momentum