There is something called “fluid friction.” Remember that a fluid is something that flows, like air or water. The fastest trains in the world ride on a cushion of air. Use what you learned today to write a hypothesis about why those trains can go so much faster than the trains we have here in the Unites States.
Question
There is something called “fluid friction.” Remember that a fluid is something that flows, like air or water. The fastest trains in the world ride on a cushion of air. Use what you learned today to write a hypothesis about why those trains can go so much faster than the trains we have here in the Unites States.
Solution
Based on the concept of fluid friction, my hypothesis would be that the fastest trains in the world can achieve such high speeds because riding on a cushion of air significantly reduces the friction between the train and the tracks. In the United States, most trains ride directly on the tracks, which creates more friction and therefore limits their speed. By using air as a fluid medium, the friction is reduced, allowing the train to move more freely and at higher speeds. This could be the reason why these trains can go much faster than the trains in the United States.
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