Question

По реке, скорость течения которой 3,6км/ч плывёт плот. На встречу плоту движется велосипедист со скоростью 5 м/с. Определите скорость плота относительно велосипедиста.

Answer 1

Ответ: 6м/с

Объяснение:

Дано:

Vп=3,6км/ч=1м/с

Vв=5м/с

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V'п-?

Скорость плота относительно скорости велосипедиста равна сумме скоростей плота и велосипедиста:

V'п=Vп+Vв=1+5=6м/с

Answer 2

Calculation of the Speed of the Raft Relative to the Bicyclist

To determine the speed of the raft relative to the bicyclist, we need to convert the units of the river's current speed and the bicyclist's speed to a common unit.

Given: - Speed of the river's current: 3.6 km/h - Speed of the bicyclist: 5 m/s

To convert the speed of the river's current from kilometers per hour (km/h) to meters per second (m/s), we can use the conversion factor: 1 km/h = 0.2778 m/s.

Converting the speed of the river's current: 3.6 km/h * 0.2778 m/s = 1 m/s

Now that both speeds are in meters per second, we can calculate the speed of the raft relative to the bicyclist.

The speed of the raft relative to the bicyclist is the difference between the speed of the raft and the speed of the bicyclist. Since they are moving in opposite directions, we subtract the speed of the bicyclist from the speed of the raft.

Speed of the raft relative to the bicyclist: 1 m/s - 5 m/s = -4 m/s

Therefore, the speed of the raft relative to the bicyclist is -4 m/s.

Please note that the negative sign indicates that the raft is moving in the opposite direction to the bicyclist.