Speed and Velocity

Description

AQA IGCSE Physics (EOY exams yr 8) Mind Map on Speed and Velocity, created by Emma Boxley on 08/05/2013.
Emma Boxley
Mind Map by Emma Boxley, updated more than 1 year ago
Emma Boxley
Created by Emma Boxley over 11 years ago
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2

Resource summary

Speed and Velocity
  1. Speed = distance/Time
    1. If an object is speeding up it is accelerating
      1. If an object is slowing down it is decelerating
        1. A speed tells us how fast an object is moving
          1. 20km/h
          2. Velocity
            1. Velocity tells us how fast and in which direction an object is moving
              1. e.g 20km/h northwards
            2. Distance Time graphs
              1. When an object is stationary, the line on the graph is horizontal
                1. When an object is moving at a steady speed, the line on the graph is straight, but diagonal.
                  1. Note that the steeper the line, the greater the speed of the object.
                    1. yaxis = distance
                      1. x axis = time
                      2. Measures of speed
                        1. m/h
                          1. Miles per hour
                          2. km/h
                            1. Kilometres per hour
                            2. m/s
                              1. Metres per second
                            3. Speed Time graphs
                              1. When an object is moving with a constant speed, the line on the graph is horizontal.
                                1. When an object is moving with a constant acceleration, the line on the graph is straight, but diagonal.
                                  1. When an object is moving with a constant deceleration, the line on the graph is straight, but diagonal (sloping down).
                                    1. y axis = speed
                                      1. x axis= time
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