Question

проход двигаясь против течения со скоростью 14 км ч проходит расстояниие между двумя пристанями за 3 ч. за какое время он пройдёт то же расстояние по течению, если скорость парохода по течению равна 5,7 м/с​

Answer 1

Путь, пройденный телом, при равномерном движении s = vt X Расстояние, пройденное по течению s = v→ . t X Перемещение тела при нулевой начальной скорости at2 2 S= X Скорость по течению, ветру и т.д. v=й = Vabs = v + u Скорость тела против течения, ветра и т.п. он й = Vabs = V - u

Answer 2

Calculation of Time to Travel the Same Distance with the Current

To calculate the time it will take for the ship to travel the same distance with the current, we need to consider the speed of the ship and the speed of the current.

Given: - Speed of the ship against the current: 14 km/h - Time taken to travel the distance between two piers against the current: 3 hours - Speed of the ship with the current: 5.7 m/s

To find the time it will take for the ship to travel the same distance with the current, we can use the formula:

Time = Distance / Speed

Let's calculate the distance first.

Calculation of Distance

The distance can be calculated by multiplying the speed of the ship against the current by the time taken to travel the distance.

Distance = Speed * Time

Distance = 14 km/h * 3 hours

Distance = 42 km

Now that we have the distance, we can calculate the time it will take for the ship to travel the same distance with the current.

Calculation of Time with the Current

To calculate the time with the current, we need to convert the speed of the ship with the current from meters per second (m/s) to kilometers per hour (km/h).

1 m/s = 3.6 km/h

Speed of the ship with the current = 5.7 m/s * 3.6 km/h

Speed of the ship with the current = 20.52 km/h

Now we can use the formula mentioned earlier to calculate the time.

Time = Distance / Speed

Time = 42 km / 20.52 km/h

Time ≈ 2.05 hours

Therefore, it will take approximately 2.05 hours for the ship to travel the same distance with the current, given that the speed of the ship with the current is 5.7 m/s.

Please note that the calculations are approximate and may vary slightly depending on the exact values used.