Final answer:
In an emergency, if there is no open space, stop and remain stationary, allowing the emergency vehicle to pass. Under certain circumstances, a rule utilitarian might justify breaking traffic laws for greater utility. Sudden stops demonstrate inertia as objects continue moving until stopped by another force.
Step-by-step explanation:
In an emergency situation, if there is no open, safe space, the emergency lane is almost always bumper to bumper with the vehicle going the same direction. The protocol in such scenarios involves several steps to ensure safety and efficiency. Firstly, in the scenario where an ambulance is approaching and you cannot move to an open space, it is crucial to stop moving and become stationary until the emergency vehicle passes by. This is important to avoid creating additional hazards and to give way to the emergency responders.
Considering another situation such as when you're stopped at a red light with a pregnant woman who's in urgent need to reach the hospital, a rule utilitarian (RU) might argue that the utility of running the red light to get to the hospital swiftly outweighs the utility of obeying the traffic law, as it could potentially save two lives.
Moreover, an interesting physics concept can be observed in a scenario where a sudden stop causes an item, like cupcakes, to be flung forward. This happens because the cupcakes continue to move forward at the previous speed due to inertia until an external force, in this case, the dashboard, changes their state of motion, turning them into smushcakes.