P2.2 Speed and Velocity - - Distance and Displacement

• What are the two types of quantities?

  Scalar and vector
• What is a scalar quantity?

  A quantity that only has magnitude
• How is speed classified in terms of quantity type?

  Speed is a scalar quantity
• Give an example of speed.

  A person running at four meters per second
• Why is velocity considered a vector quantity?

  Because it has both magnitude and direction
• Provide an example of velocity.

  A person cycling six meters per second east
• What is the difference between distance and displacement?

  Distance is a scalar, while displacement is a vector
• Give an example of distance.

  10 meters
• Provide an example of displacement.

  A person running 40 meters east
• How do you calculate the speed of an object?

  • Speed = Distance / Time
• How do you calculate the velocity of an object?

  • Velocity = Displacement / Time
• What does the letter 's' represent in the velocity equation?

  Displacement
• What is average speed or average velocity?

  • Average Speed = Total Distance / Total Time
  • Average Velocity = Total Displacement / Total Time
• What is the average walking speed of a person?

  About 1.5 meters per second
• What is the average running speed of a person?

  Around 3 meters per second
• What is the average cycling speed of a person?

  About 6 meters per second
• What is the average speed of a car on the main road?

  Around 25 meters per second
• What is the average speed of a fast train?

  Around 55 meters per second
• What is the average speed of planes?

  Can exceed 250 meters per second
• What is the speed of sound waves in air?

  330 meters per second
• How does the speed of sound change in different mediums?

  It varies depending on the medium
• What factors can affect the speed of wind?

  Temperature, atmospheric pressure, and structures like buildings
• What is the difference between speed and velocity?


  Speed is a Scaler quantity.

  Velocity is a Vector quantity.

  Both measures how fast you're going, but only velocity tells you the direction you're going in.
• What is the formula for Velocity?


  Velocity [v] = displacement [s] / time [t]

  v = s/ t
• What is the difference between distance and displacement?


  Distance is a scaler quantity.

  Displacement is a Vector quantity.

  Displacement is the shortest distance between the start and end points.