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
• How is speed calculated?

  Speed = distance traveled / time taken
• What type of quantity is speed?

  Scalar quantity
• How is velocity defined?

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

  Its speed
• What does stating an object travels at 20 meters per second south indicate?

  Its velocity
• 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 racetrack have changing velocity?

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

  Velocity is constantly changing
• What does it mean if an object travels around part of a circle?

  Its velocity is also changing
• What are the key differences between speed and velocity?

  • Speed: scalar quantity, no direction
  • Velocity: vector quantity, includes direction
• What is the relationship between constant speed and changing velocity in circular motion?

  • Constant speed: magnitude remains the same
  • Changing velocity: direction changes continuously