Forces part 2

• Calculating speed


  Speed = Distance / Time
• Speed


  Measured in metres per second (m/s)
• Distance


  Measured in metres (m)
• Time


  Measured in seconds (s)
• Calculating acceleration


  acceleration = final velocity - initial velocity / time
• Acceleration


  Measured in metres per second squared (m/s2)
• Change in velocity


  Measured in metres per second (m/s)
• horizontal line (distance time graphs)


  No movement
• Oblique line (distance time graph)

  The object is moving the steeper the line the faster the speed
• Line going up (velocity time graph)


  Object is increasing velocity (accelerating/getting faster)
• Line flat after going up (velocity time graph)


  Object is moving at a constant velocity(no change in speed)
• Line going down (velocity line graph)

  object is decreasing in velocity (getting slower)
• flat line at the bottom (velocity time graph )

  Object is stationary