Question

Пароход, двигаясь против течения со скоростью 16 км/ч, проходит расстояние между двумя пристанями за 4 ч. За какое время он пройдёт то же расстояние по течению, если скорость парохода по течению равна 5,2 м/с? Ответ: время равно ч. (Результат округляй до десятых!) плизз кто сдал

Answer 1

Ответ:

S = v*t = 16 * 4 = 64 км

v = 5.2 * 3.6 = 18.72 км/ч

t = S/v = 64 / 18.72  приблизитеьно 3.4 ч

Answer 2

Problem Analysis

We are given that a steamboat is traveling against the current at a speed of 16 km/h and it takes 4 hours to cover a certain distance between two piers. We need to determine how long it will take for the steamboat to cover the same distance with the current flowing at a speed of 5.2 m/s.

Solution

To solve this problem, we can use the formula:

Time = Distance / Speed

Let's calculate the time it takes for the steamboat to cover the distance against the current.

Distance = Speed x Time

Given: - Speed = 16 km/h - Time = 4 hours

Substituting the values into the formula, we can calculate the distance covered against the current:

Distance = 16 km/h x 4 hours

To calculate the time it takes for the steamboat to cover the same distance with the current, we need to find the distance first.

Now, let's convert the speed of the steamboat with the current from meters per second to kilometers per hour.

Speed = 5.2 m/s x 3.6 km/h

Once we have the distance and the speed, we can calculate the time it takes for the steamboat to cover the distance with the current:

Time = Distance / Speed

Calculation

Let's calculate the distance covered against the current:

Distance = 16 km/h x 4 hours = 64 km

Now, let's convert the speed of the steamboat with the current from meters per second to kilometers per hour:

Speed = 5.2 m/s x 3.6 km/h = 18.72 km/h

Finally, let's calculate the time it takes for the steamboat to cover the distance with the current:

Time = Distance / Speed = 64 km / 18.72 km/h

Answer

The steamboat will take approximately 3.42 hours to cover the same distance with the current flowing at a speed of 5.2 m/s.