Velocity

• What should you be able to describe by the end of the video?

  What's meant by the word velocity
• Why is velocity considered a vector quantity?

  It includes both magnitude and direction
• What does speed tell us about an object's journey?

  Distance traveled in a given time
• What is the definition of velocity?

  Speed in a given direction
• If an object travels at 20 meters per second, what does this represent?

  Its speed
• How is speed calculated?

  Speed = distance traveled / time taken
• What is a key fact about speed?

  It does not indicate the direction of travel
• How would you state an object's velocity if it travels at 20 meters per second south?

  20 meters per second south
• How do we calculate velocity?

  Same way as speed, with direction
• What is the velocity of a person walking 50 meters south in 40 seconds?

  1.25 meters per second south
• What happens to velocity when an object moves in a circle at constant speed?

  Velocity is constantly changing
• Why does a car moving around a circular track have changing velocity?

  Its direction is constantly changing
• What is a key fact about objects moving in a circle?

  Constant speed means changing velocity
• What is the relationship between speed and velocity?

  • Speed is a scalar quantity
  • Velocity is a vector quantity
  • Velocity includes direction
• What are the implications of constant speed in circular motion?

  • Speed remains the same
  • Direction changes continuously
  • Velocity changes constantly