Question

Поезд двигается равномерно со скоростью 63 км/ч, проезжает мимо идущего в том же направлении параллельно путям со скоростью 3 км/ч пешехода за 57 секунд. Найдите длину поезда в метрах. СРОЧНО!!!))))

Answer 1

Ответ: 62.7(м)......................................

Answer 2

Problem Analysis

We are given that a train is moving at a constant speed of 63 km/h and passes a pedestrian walking in the same direction at a speed of 3 km/h in 57 seconds. We need to find the length of the train in meters.

Solution

To find the length of the train, we can use the formula:

Length of the train = (Relative speed of train and pedestrian) × (Time taken to pass the pedestrian)

The relative speed of the train and the pedestrian is the difference between their speeds:

Relative speed = Speed of train - Speed of pedestrian

Let's calculate the length of the train using the given information.

Calculation

Given: - Speed of the train = 63 km/h - Speed of the pedestrian = 3 km/h - Time taken to pass the pedestrian = 57 seconds

Relative speed of the train and pedestrian: Relative speed = 63 km/h - 3 km/h = 60 km/h

Now, we need to convert the relative speed from km/h to m/s, as the time is given in seconds and the length of the train is required in meters.

1 km/h = 1000 m/3600 s = 5/18 m/s

Converting the relative speed to m/s: Relative speed = 60 km/h × (5/18) m/s = 50/3 m/s

Finally, we can calculate the length of the train using the formula:

Length of the train = (Relative speed of train and pedestrian) × (Time taken to pass the pedestrian)

Length of the train = (50/3 m/s) × (57 s)

Let's calculate the length of the train.

Calculation Continued

Length of the train = (50/3 m/s) × (57 s) Length of the train = (50/3) × (57) m Length of the train = 950 m

Answer

The length of the train is 950 meters.

Please note that the answer is based on the given information and calculations.