Question

пловец плывет против течения реки Чему равна скорость пловца относительно берега реки если его скорость относительно воды полтора метров секунду а скорость течения реки 0 5 метров секунду

Answer 1

1,5 м/с - 0,5 м/с = 1 м/с

Answer 2

Calculation of the Swimmer's Speed Relative to the Riverbank

To determine the swimmer's speed relative to the riverbank, we need to consider the swimmer's speed relative to the water and the speed of the river's current.

Given: - Swimmer's speed relative to the water: 1.5 meters per second - Speed of the river's current: 0.5 meters per second

To calculate the swimmer's speed relative to the riverbank, we can use vector addition. The swimmer's velocity relative to the riverbank is the vector sum of their velocity relative to the water and the velocity of the river's current.

The magnitude of the swimmer's velocity relative to the riverbank can be calculated using the Pythagorean theorem:

Velocity of the swimmer relative to the riverbank = √((velocity of the swimmer relative to the water)^2 + (velocity of the river's current)^2)

Substituting the given values:

Velocity of the swimmer relative to the riverbank = √((1.5 m/s)^2 + (0.5 m/s)^2)

Calculating the values:

Velocity of the swimmer relative to the riverbank = √(2.25 m^2/s^2 + 0.25 m^2/s^2) = √2.5 m^2/s^2 ≈ 1.58 m/s

Therefore, the swimmer's speed relative to the riverbank is approximately 1.58 meters per second.

Please note that the above calculation assumes that the swimmer is swimming perpendicular to the river's current. If the swimmer is swimming at an angle to the current, the calculation would involve vector components and trigonometry.