Scalar and Vector Quantities

• What are scalar quantities?

  Physical quantities with only magnitude
• What does magnitude refer to in physics?

  Magnitude refers to size or numerical value
• If a car travels at 22 meters per second, what is the magnitude of its speed?

  22 meters per second
• Which of the following is a scalar quantity?

  Temperature
• What are examples of scalar quantities?

  Distance, mass, temperature, time
• What defines vector quantities?

  They have both magnitude and direction
• Which of the following is a vector quantity?

  Velocity
• What happens when you walk a distance of three kilometers without direction?

  You could end up anywhere on a circle
• How does specifying direction change distance into displacement?

  It provides exact location from the start
• If you walk three kilometers east, what type of quantity is this?

  Vector quantity
• How are vectors represented visually?

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

  Arrow pointing up with length four kilometers
• What does a shorter arrow represent in vector notation?

  A smaller magnitude of the vector
• How can negative vectors be represented?

  As a vector pointing in the opposite direction
• What are the key differences between scalars and vectors?

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

  • Velocity
  • Displacement
  • Acceleration
  • Force
  • Momentum
• How does direction affect the interpretation of distance?

  • Distance alone: No direction, scalar
  • Distance with direction: Displacement, vector
• How do arrows represent vectors in physics?

  • Length indicates magnitude
  • Direction indicates the vector's direction