Mathematics, 06.01.2021 18:30 meowandcake
The speed of the ship in the direction of the river is 18 km / h. And in the opposite direction to the river 12 km / h. Find 1) the velocity of a river flow 2) the velocity of a ship in stagnant water.
Answers: 1
![Hence,\\For\ Simplicity,\\v+F=18\ [When\ glides\ through\ the\ river]\\v-F=12\ [When\ glides\ against\ the\ river]\\Hence,\ by\ adding\ the\ two\ equations:\\(v+F)+(v-F)=18+12\\2v=30\\v=\frac{30}{2}=15\ km/h\\Note:\ The\ F\ stands\ for\ the\ speed\ of\ the\ ship\ independent\ of\ the\ river's\\ flow.](/tpl/images/1016/4601/a4198.png)
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