Question

Моторная лодка движется против течения реки со скоростью 2 м/с относительно берега, а в стоячей воде — со скоростью 4 м/с. Чему равна скорость течения реки?

Answer 1

Ответ:

2м/с

за такие задания нужно больше баллов давать

Answer 2

Calculation of River Current Speed

To determine the speed of the river current, we can use the concept of relative velocity. The speed of the boat with respect to the shore is given as 2 m/s, while the speed of the boat in still water is given as 4 m/s.

Let's assume the speed of the river current is represented by v.

The speed of the boat with respect to the river current can be calculated by subtracting the speed of the river current from the speed of the boat in still water:

Speed of boat with respect to river current = Speed of boat in still water - Speed of river current

Therefore, we have:

2 m/s = 4 m/s - v

To find the value of v, we can rearrange the equation:

v = 4 m/s - 2 m/s

Simplifying the equation, we get:

v = 2 m/s

Therefore, the speed of the river current is 2 m/s.