Final answer:
In North Carolina, the default speed limit inside a city is 35 mph, and the speed limit for a school activity bus is not 25 mph unless otherwise posted.
Understanding speed limits and conversions is crucial both for following the law and for solving physics-related problems.
Step-by-step explanation:
The correct statements about speed limits in North Carolina are that, unless otherwise posted, the speed limit inside a city is 35 mph, and the speed limit for a school activity bus is not specified as 25 mph.
However, in the context of understanding speed limits, it's interesting to note that 50 kilometers per hour is equal to approximately 31 miles per hour, which is a typical speed limit for a residential area.
As for enforcement, while there is a degree of leniency, consistently driving above the speed limit eventually increases the risk of receiving a traffic ticket. In physics problems involving speed, conversions between different units of speed are essential, such as converting kilometers per hour to meters per second or to miles per hour.
For instance, a speed limit of 100 km/h translates to about 62 miles per hour. Such conversions are valuable not just for obeying traffic laws but also in various real-life and academic situations.