Physics Review

• scalar value with a unit
• vector value with unit and direction
• distance total route that you take
• displacement is final position minus initial position
• position time graph (PT) shows relationship between displacement and time. positive means moving away negative means moving back
• Velocity time graph positive means moving to the right negative means moving to the left
• What does a arrow above a symbol indicate?

  Vector quantity
• how do you find average speed?

  Total distance divided by total time.
• how do you find average velocity?

  Displacement divided by time