Question

Скорость катера в стоячей воде 15,3 км/ч а скорость течения реки 1,5 км/ч . катер двигался сначала 2 ч ввезх а потом 3 ч внихз . сколько километров он прошел за это время

Answer 1

1)1,5*2=3(км за 2 часа)
2)1,5*3=4,5(км за 3 часа)
3)15,3+3=18,3(км по течению)
4)15,3-4,5=10,8(км против течения)
5)18,3+10,8=29,1(всего км)
Ответ:29,1км

Answer 2

Calculating Distance Traveled by the Boat

To calculate the distance traveled by the boat, we can use the formula: distance = speed × time

Given: - Boat's speed in still water = 15.3 km/h - Speed of the river's current = 1.5 km/h - Time spent moving upstream = 2 hours - Time spent moving downstream = 3 hours

Upstream Distance Calculation

First, let's calculate the distance traveled by the boat when moving upstream.

The effective speed of the boat when moving upstream is the difference between the boat's speed and the speed of the river's current: effective speed upstream = boat's speed - speed of the current

The distance traveled upstream is then: distance upstream = effective speed upstream × time upstream

Using the given values: effective speed upstream = 15.3 km/h - 1.5 km/h time upstream = 2 hours

Now, let's calculate the distance traveled upstream.

Downstream Distance Calculation

Next, we'll calculate the distance traveled by the boat when moving downstream.

The effective speed of the boat when moving downstream is the sum of the boat's speed and the speed of the river's current: effective speed downstream = boat's speed + speed of the current

The distance traveled downstream is then: distance downstream = effective speed downstream × time downstream

Using the given values: effective speed downstream = 15.3 km/h + 1.5 km/h time downstream = 3 hours

Now, let's calculate the distance traveled downstream.

Total Distance Traveled

Finally, we'll find the total distance traveled by adding the distances traveled upstream and downstream: total distance = distance upstream + distance downstream

Let's calculate the distances and the total distance traveled by the boat.