Final answer:
After driving through high water, switch to a low gear and lightly apply the brakes every few seconds to test and dry them. It is important to ensure brakes are functioning correctly, especially after exposure to water.
Step-by-step explanation:
After driving through high water, to test your brakes, you should switch to a low gear and brake lightly every few seconds. This helps to dry the brakes out and ensures they are working properly before you resume driving at normal speeds. When doing this, make sure that there is no traffic behind you and that you are on a straight stretch of road to ensure it is safe to perform this test.
For a more scientific approach, such as in physics, one could calculate the distance necessary to stop a car on wet concrete vs. dry concrete. To do this, deceleration rates on different surfaces are used and factoring in a driver's reaction time could provide insight into the displacement from the point where the driver starts to brake to where the car comes to a halt. Therefore, it's crucial to maintain your vehicle's brakes and consistently check their performance, especially after exposure to high water or adverse weather conditions.