Final answer:
In the context of Physics, the smoothest traffic flow is generally in the middle lane of a multi-lane freeway. The rabbit's ability to cross depends on the speed of the car and traffic conditions, which are unpredictable. Time to cross lanes depends on the rabbit's speed and the total width to be crossed.
Step-by-step explanation:
The question pertains to motion and traffic flow, which falls under the category of Physics. Specifically, it deals with motion in one dimension, typical of vehicles moving along a freeway. When considering multiple lanes of traffic moving in the same direction, the smoothest flow is usually found in the middle lane, as the right-most lane is often for entering and exiting the freeway, and the left-most lane is for faster-moving traffic and overtaking maneuvers.
If the car is travelling in the furthest lane from the rabbit, and factors like the speed of the car and the rabbit's speed are safe, then theoretically the rabbit may be able to cross all 3 lanes safely. However, in reality, this would be extremely dangerous due to unpredictable traffic conditions. As for the time it would take for the rabbit to cross all three lanes, if each lane is 3 meters wide, the total distance would be 9 meters. The time will depend on the rabbit's speed.
The constant speed of a car moving on a straight road implies that there are no accelerations and therefore the motion can be predicted and calculated using principles of physics. This understanding helps in planning faster routes and in explaining traffic flow issues such as the closure of a street.