Did you know?
Did you know that when a moving train slows down uniformly, it means that its velocity decreases at a constant rate? In the given scenario, the train slows down from 40 m/s to 20 m/s in a span of 5 seconds. If we want to determine the distance it covers during the 4th second, we can use a formula derived from physics. By subtracting the initial velocity (40 m/s) from the final velocity (20 m/s) and dividing it by the time taken (5 seconds), we find that the train is decelerating at a rate of 4 m/s every second. During the 4th second, the train would have decelerated by 4 m/s three times. Therefore, the distance it covers in the 4th second can be calculated by multiplying the deceleration rate (4 m/s) by the number of times it occurred (3) and the duration (1 second). Hence, the train covered a distance of 12 meters during the 4th second of slowing down.