Final answer:
In adverse conditions, the proper speed to travel at is one that maintains passenger safety, taking into account poor visibility and road conditions. It is critical to reduce speed significantly, especially with expert warnings about potential dangers ahead. The main principle is safety over speed.
Step-by-step explanation:
When traveling in adverse conditions, the proper speed to travel is one that ensures the safety of all passengers and adheres to the conditions of the road. The ideal speed is defined as the maximum safe speed at which a vehicle can navigate a turn without relying on the friction between the tire and the road. In adverse conditions, the ideal speed must be reduced significantly.
Considering the scenario provided, wherein the vehicle's speed has been increasing from 1 km/hr to 20,000 km/hr in a short span and visibility is poor, it's critical to dramatically reduce speed. The warnings from scientists about approaching a precipice must be taken seriously, suggesting an urgent need to slow down and even halt to prevent disaster.
Speed equals distance divided by time is the fundamental concept in determining how fast one is traveling; however, in adverse conditions, it's not just about the mathematics but also about making prudent decisions based on environmental cues and expert advice.