Click "(re)start, then drag the truck: |
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Click "(re)start graph animation". Click-hold-and-drag the truck - see how the x-y co-ordinates of the truck (i.e. the rear of the truck) changes. Make sure you know where the x-origin is and which direction is positive. See how your movement determines the graph (i.e. the position-time graph)! The graph shows how far the truck is from the origin at any given moment, whether it is moving away or moving closer to the orgin, and how fast it is moving. Make sure that you understand the influence on the graph if the truck: