Solve these problems graphically. Once the graph is completed, right-click in the graph - a new window opens, which you can maximise (click the small square in the top-right corner). Note that if you left-click in the graph, the t-x co-ordinates of the point is displayed bottom-left.
In Animation 1: Who was ahead, second and third after 3 seconds? And after 5 seconds? And after 10 seconds? And after 18 seconds?
When (time) and where (position):
- did the green truck overtake the blue truck?
- did the blue truck overtake the green truck?
- did the red truck overtake the blue truck?
- did the blue truck overtake the red truck?
- Was the red truck ahead of the green truck?
In Animations 2 and 3: Where (position) and when (time) does the one truck overtake the other, or when and where do they cross? Show how to find the answer from the graph. How does the motion of the trucks explain the graphs?