Velocity

• What is the definition of velocity?

  Velocity is the speed of an object in a given direction.
• Why is velocity considered a vector quantity?

  Because it includes both speed and direction.
• How does speed differ from velocity?

  Speed is a scalar quantity, while velocity is a vector quantity.
• How do you calculate speed?

  • Speed = Distance traveled / Time taken
• If an object travels 20 meters per second south, what is its velocity?

  20 meters per second south.
• What happens to the velocity of an object moving in a circle at constant speed?

  • The speed remains constant
  • The direction changes
  • Therefore, the velocity is constantly changing
• Why does an object moving in a circle at constant speed have changing velocity?

  Because its direction is constantly changing.
• What is a key fact about velocity when an object moves in a circle?

  • If an object moves at a constant speed in a circle, its velocity is constantly changing.