Final answer:
It takes three to seven seconds longer to pass a truck than a car on a level highway, accounting for the truck's larger size and the distance needed to overtake and safely return to the lane.
Step-by-step explanation:
On a level highway, it takes three to seven seconds longer to pass a truck than a car. This additional time is required due to the larger size and length of trucks compared to cars. When passing a larger vehicle like a truck, drivers must take into account the extra distance needed to safely overtake and return to the lane in front of the truck without cutting it off. Considering that a truck can be significantly longer than a car, the time to pass safely increases. The exact time can vary based on several factors such as the relative speeds of the vehicles, road and traffic conditions, and the truck's length.