Velocity

• Why is velocity considered a vector quantity?

  It includes both magnitude and direction
• What does motion in a circle involve regarding speed and velocity?

  Constant speed but changing velocity
• How is speed calculated?

  Speed = distance traveled / time taken
• What does speed not provide information about?

  The direction of the journey
• What type of quantity is speed classified as?

  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 is the velocity if an object travels at 20 meters per second south?

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

  Same way as speed, with direction
• What happens to the velocity of an object moving in a circle at constant speed?

  Its velocity is constantly changing
• How does the direction of a car moving around a circular track affect its velocity?

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

  Velocity is constantly changing