Question

Швидкість пароплава за течією ріки 28 км/год, а проти течії 22 км/год. Знайди: а) швидкість течії ріки; б) власну швидкість пароплава: о B) Шлях пароплава за год озером ​

Answer 1

Відповідь:

1) 6 км/год - швидкість течії;

2) 16 км/год - власна швидкість пароплава

за течіею = 28 км/год

Проти течії = 22 км/год

без течії = 16 км/год

Покрокове пояснення:

1)28 - 22 = 6 км/год - швидкість течії;

2)22 - 6 = 16 км/год - власна швидкість пароплава

за течіею = 28 км/год

Проти течії = 22 км/год

без течії = 16 км/год

Answer 2

Calculation of River Current Speed and Steamboat's Speed:

To find the speed of the river current and the speed of the steamboat, we can use the following formulas:

a) Speed of the River Current: The speed of the river current can be calculated by subtracting the speed of the steamboat against the current from the speed of the steamboat with the current.

b) Speed of the Steamboat: The speed of the steamboat can be calculated by taking the average of the speed of the steamboat with the current and the speed of the steamboat against the current.

Let's calculate the values:

a) Speed of the River Current: Given: - Speed of the steamboat with the current = 28 km/h - Speed of the steamboat against the current = 22 km/h

To find the speed of the river current, we subtract the speed of the steamboat against the current from the speed of the steamboat with the current:

Speed of the river current = Speed of the steamboat with the current - Speed of the steamboat against the current Speed of the river current = 28 km/h - 22 km/h Speed of the river current = 6 km/h

b) Speed of the Steamboat: Given: - Speed of the steamboat with the current = 28 km/h - Speed of the steamboat against the current = 22 km/h

To find the speed of the steamboat, we take the average of the speed of the steamboat with the current and the speed of the steamboat against the current:

Speed of the steamboat = (Speed of the steamboat with the current + Speed of the steamboat against the current) / 2 Speed of the steamboat = (28 km/h + 22 km/h) / 2 Speed of the steamboat = 50 km/h / 2 Speed of the steamboat = 25 km/h

c) Distance Traveled by the Steamboat in an Hour on the Lake: The distance traveled by the steamboat in an hour on the lake can be calculated by multiplying the speed of the steamboat by the time:

Distance = Speed * Time Distance = 25 km/h * 1 hour Distance = 25 km

Therefore, the steamboat will travel a distance of 25 km in an hour on the lake.

Summary: a) The speed of the river current is 6 km/h. b) The speed of the steamboat is 25 km/h. c) The steamboat will travel a distance of 25 km in an hour on the lake.

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