Final answer:
Without specific time data, the speed of the first train cannot be calculated from the provided options. The Zephyr train's average speed is calculable, and perceptions of high-speed motion are often relative to the observer.
Step-by-step explanation:
To calculate the speed of the first train, we need additional information that provides the necessary details to compute the speed, such as the time taken for the train to travel a certain distance. However, based on the context given with multiple train scenarios, we can infer that the train's average speed can be found by using the equation for speed, which is distance divided by time (speed = distance/time). Without the specific time taken for the train to travel the mentioned 40 miles one way and back, we cannot determine the correct speed from the options provided.
The Zephyr train's average speed can be calculated by dividing the total distance traveled, 1633.8 km, by the time taken in hours. To convert the time taken to hours, we use the conversion that 1 hour is equal to 3600 seconds. Thus, the average speed in km/h is 1633.8 km divided by 13 hours plus 4 minutes (converted to hours by dividing by 60) plus 58 seconds (converted to hours by dividing by 3600). The average speed in m/s would necessitate further conversion of kilometers per hour to meters per second by multiplying by 1000 to convert kilometers to meters, and then dividing by 3600 to convert hours to seconds.
Since the question about the first train's speed cannot be answered without additional information, we can examine the insight that motion can be relative and often goes unnoticed at high speeds, as with the example of a train traveling at over 300 mph. The sensation of motion is not always apparent unless one observes the motion relative to another object, a concept that is a cornerstone in relative motion