Question

Скорость течения реки 2,6км/ч, собственная скорость катера 13,2км/ч. Найдите расстояние пройденное катером по течению реки за 2 часа и расстояние пройденное катером против течения реки за 3 часа.

Answer 1

Ответ:

за 2 ч по течению-28, 6 км

за 3 часа против течения- 31,8 км

Answer 2

Calculation of Distance Traveled by the Boat

To find the distance traveled by the boat with the current and against the current, we need to use the formula:

Distance = Speed x Time

Given: - Speed of the river current = 2.6 km/h - Speed of the boat = 13.2 km/h - Time taken with the current = 2 hours - Time taken against the current = 3 hours

Let's calculate the distances traveled by the boat in each case.

Distance Traveled with the Current:

The boat is moving in the same direction as the river current, so the effective speed of the boat will be the sum of its own speed and the speed of the current.

Effective speed with the current = Boat speed + Current speed = 13.2 km/h + 2.6 km/h = 15.8 km/h

Using the formula Distance = Speed x Time, we can calculate the distance traveled with the current:

Distance with the current = Effective speed with the current x Time taken with the current Distance with the current = 15.8 km/h x 2 hours = 31.6 km

Therefore, the distance traveled by the boat with the current is 31.6 km.

Distance Traveled against the Current:

The boat is moving in the opposite direction to the river current, so the effective speed of the boat will be the difference between its own speed and the speed of the current.

Effective speed against the current = Boat speed - Current speed = 13.2 km/h - 2.6 km/h = 10.6 km/h

Using the formula Distance = Speed x Time, we can calculate the distance traveled against the current:

Distance against the current = Effective speed against the current x Time taken against the current Distance against the current = 10.6 km/h x 3 hours = 31.8 km

Therefore, the distance traveled by the boat against the current is 31.8 km.

To summarize: - Distance traveled by the boat with the current: 31.6 km - Distance traveled by the boat against the current: 31.8 km