Final answer:
The statement about the three parts to a controlled access entrance is true. These include the entrance ramp, the acceleration lane, and the merging lane, facilitating the safe arrival of vehicles on the freeway. The movement of a car at constant speed indicates uniform motion.
Step-by-step explanation:
The statement there are three parts to a controlled access entrance: entrance ramp, acceleration lane, and merging lane is true. When a car is moving on a freeway system, the controlled access entrance aids in the safe and efficient flow of traffic onto the freeway. The entrance ramp allows vehicles to move away from local streets onto the freeway system. Next, vehicles use the acceleration lane to increase their speed to match that of the freeway traffic. Finally, the merging lane provides a space for vehicles to safely integrate into the flow of traffic on the main lanes of the freeway. As for the safety of a rabbit crossing, it largely depends on traffic conditions and the rabbit's own speed and timing.
Regarding the car moving at a constant speed in a single direction, some possible truths could be that the car is maintaining a uniform motion, is not accelerating, and will cover equal distances in equal time intervals as long as the speed remains constant and unidirectional.