speed

• Distance


  How far an object moves, without involving direction
• Displacement


  The distance an object moves in a straight line from the start point to the finish point, including direction
• Speed


  The distance an object travels divided by the time taken
• Calculating speed


  Speed = Distance / Time
• Normal walking speed is around 1.5 meters per second
• Learning speed is around 3 meters per second
• Cycling speed is around 6 meters per second
• Car speed on a main road is around 13 meters per second
• Fast train speed in the UK is around 50 meters per second
• Cruising aeroplane speed is around 250 meters per second
• Speed of sound in air is typically 330 meters per second
• The speed of a moving object is rarely constant
• Calculating distance travelled at constant speed

  Distance = Speed x Time
• A car travelling at 12 meters per second for 8 seconds travelled a distance of 96 meters