Question

Поезд , двигаясь равномерно со скоростью 70 км/ч , проезжает мимо лесополосы , длина которой равна 100 метров , за 54 секунды . Найдите длину поезда в метрах .

Answer 1

Составим уровнение возмем за х длинну поезда
(100+х)/70=54/3600
(100+х/)70=0.015
0.1км+х=1.05
х=950м

Answer 2

Calculation of the Length of the Train

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

Distance = Speed × Time

Given: - Speed of the train = 70 km/h - Time taken to pass the forest strip = 54 seconds - Length of the forest strip = 100 meters

Let's convert the speed from km/h to m/s: - 70 km/h = (70 × 1000) m / (60 × 60) s = 19.44 m/s

Now, we can substitute the values into the formula to find the distance traveled by the train: - Distance = Speed × Time = 19.44 m/s × 54 s = 1050.96 meters

Therefore, the length of the train is approximately 1050.96 meters.