distance time graphs

  • Created by: tia5sos
  • Created on: 15-10-20 16:45
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  • distance time graphs
    • tells you how far something has travelled
      • the different parts of a d-t graph describe the motion of an object:
        • the gradient (slope) at any point gives the speed of the object.
        • flat sections are where its stopped
        • a steeper graph means its going faster
        • curves represent acceleration.
        • a steepening curve means its speeding up ( increasing gradient)
        • a levelling off curve means its slowing down (decreasing gradient)
    • the speed of an object can be found from a distance - time graph
      • 1. the gradient of a d-t graph at any point is equal to the speed of the object at that time.
      • 2. if the graph is a straight line, the gradient at any point along the line is equal to change in velocity divide change in the horizontal.
      • 3. if the graph is curved, to find the speed at a certain time you need to draw a tangent to the curve at that point, and then find the gradient of the tangent.
      • 4. you can also calculate the average speed of an object when it has a non- uniform motion (accelerating) by dividing the total distnace travelled by the time it takes to travel that distance.


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