Speed and Velocity

• What is instantaneous speed?

  Speed at any moment in time
• How is average speed calculated?

  Total time divided by total distance
• What are the characteristics of speed?

  • Scalar quantity
  • Describes how fast an object moves
  • Rate at which distance is covered
• What is the SI unit of speed?

  m/s (meter per second)
• What does the symbol 'S' represent?

  Speed
• What does the symbol 'S' with an arrow above represent?

  Average speed
• What does the symbol 'd' represent?

  Distance
• What does the symbol 't' represent?

  Time
• What does the symbol 'V' represent?

  Velocity
• What does the symbol 'V' with an arrow above represent?

  Average velocity
• What does the symbol 'd' with an arrow above represent?

  Displacement
• What does the equation \(D = S \times T\) represent?

  Distance equals speed multiplied by time
• What does the equation \(S = D/T\) represent?

  Speed equals distance divided by time
• What does the equation \(T = D/S\) represent?

  Time equals distance divided by speed
• What is velocity?

  Rate of change of an object's position
• What type of quantity is velocity?

  Vector quantity
• What is the SI unit of velocity?

  m/s (meter per second)
• What does the equation V = d(displacement)/t represent?

  Velocity equals displacement divided by time
• What does the equation d(displacement) = V x t represent?

  Displacement equals velocity multiplied by time
• What does the equation t = d(displacement)/V represent?

  Time equals displacement divided by velocity