Scalar and vector quantities

• What are the two types of quantities discussed in the video?

  Scalar and vector quantities
• What defines a scalar quantity?

  It has only magnitude, no direction
• What is another term for magnitude?

  Size
• If a car travels at $22 \text{ m/s}$, what is the magnitude of its speed?


  $22 \text{ m/s}$
• Why is speed considered a scalar quantity?

  It has no direction, only magnitude
• Name three examples of scalar quantities.

  Distance, mass, temperature
• List two examples of vector quantities.

  Velocity, displacement
• What distinguishes vector quantities from scalar quantities?

  Vectors have both magnitude and direction
• How does walking three kilometers illustrate the concept of distance?

  It shows no specific direction
• What happens when you specify a direction while walking a distance?

  You define a specific displacement
• If you walk three kilometers east, what type of quantity is this?

  Vector quantity
• How are vectors visually represented?

  Using arrows indicating magnitude and direction
• What does the length of an arrow represent in vector notation?

  The magnitude of the vector
• What does a vector pointing north indicate?

  Direction of the vector
• How would you represent a vector of four kilometers north?

  Arrow pointing north, length four kilometers
• What does a negative vector indicate?

  Direction opposite to the positive vector
• How would you label a vector of two kilometers west as a negative vector?

  -2 kilometers east
• What are the key differences between scalar and vector quantities?

  • 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