The Stoplight:
The blue car going in constant speed of 10m/s passes a red car that is at rest when the traffic light turns green. When the data of the two cars were collected, the red car accelerates at 4m/s??hen goes in constant speed. The blue car maintains constant speed the whole time.
From the graph plotted with the data of the two cars;
- displacement of the two cars can be calculated by finding the area underneath the lines
- the point when the red car passes the blue car can be figured out