Question

Катер плывет по прямой реке двигаясь относительно берега перпендикулярна береговой линии.модуль скорости катера относительно берега равен 6 км/ч.река течёт со скоростью 4.5 км/ч.чему равен модуль скорости катера относительно воды?

Answer 1

По теореме Пифагора:

V = √ ( 6² + 4,5²) = √ (56,25) = 7,5 км/ч

Answer 2

Calculation of the Boat's Velocity Relative to the Water

To determine the velocity of the boat relative to the water, we need to consider the velocities of the boat and the river separately and then find their vector sum.

Given information: - Velocity of the boat relative to the shore: 6 km/h- Velocity of the river: 4.5 km/h To find the velocity of the boat relative to the water, we can use the vector addition formula:

Velocity of the boat relative to the water = Velocity of the boat relative to the shore + Velocity of the river

Let's calculate the velocity of the boat relative to the water:

Velocity of the boat relative to the water = 6 km/h + 4.5 km/h = 10.5 km/h

Therefore, the magnitude of the boat's velocity relative to the water is 10.5 km/h.