A train moving at a speed of 60 km / h passes the post in 9 seconds, find the length of the train.
| September 4, 2021 | education
We know that the train was moving evenly and its speed was 60 km / h. Since it passes by the post very quickly, in only 25 seconds, it is more convenient to convert the speed to other units of measurement – in m / s. In order to convert km / h to m / s, you need to multiply km / h by 1000 and divide by 3600. As a result, we get:
60 km / h = 60 * 1000: 3600 m / s = 60,000/3600 = 16 24/36 m / s = 16 2/3 m / s.
Since the speed of the train is 16 2/3 m / s, and the time it takes it to pass the post is 9 seconds, in order to find out the length of the train, the speed of the train must be multiplied by the time and we get:
16 2/3 * 9 = 150 (m).
Therefore, the length of the train is 150 m.
Answer: the length of the train is 150 meters.
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