Final answer:
To calculate the distance between the flagman and two yellow lights, we need to know the time it takes for the lights to travel from the flagman to the observer.
Step-by-step explanation:
To calculate the distance between the flagman and two yellow lights, we can use the information provided. In Bridget's observation, she measured two poles to be 50 meters apart and cars took 3 seconds to travel from one pole to the other. We can assume that the cars were moving at a constant speed during this observation.
Using the formula distance = speed x time, we can determine the speed of the cars by dividing the distance (50 meters) by the time (3 seconds). This gives us a speed of approximately 16.67 m/s.
Now, to find the distance between the flagman and two yellow lights, we need to know the time it takes for the lights to travel from the flagman to the observer. Without this information, it is not possible to accurately calculate the distance.