*distance/time graphs

• Distance/time Graphs


  measure distance on the vertical axis and time on the horizontal axis
• These are more useful than words bc...

  • easier to see trends and patterns
  • you can read any value of distance or time during the journey from the graph
  • other values, (eg; speed) can be calculated form the graph
  • info about the whole journey can be seen easily
• Example:

  1. the motorbike has travelled zero distance at A, the starting position.
  2. it travels at constant speed (which increases with time) away from the starting position until the bike reaching point B.
  3. the bike stops and becomes stationary at B so the distance doesn't change, but time still passes.
  4. it starts again and moves at a constant speed to it's destination, point C, faster than A-B, meaning it travels a further distance shown as a steeper, straight, upward slowing line.
  5. from C, the motorbike travels at constant speed back to its starting position. the distance decreases with time.