
24 km Sboat X 4 h Sr X 4 h downstream.
A boat runs at 22 km. Let frac1xy u and frac1x-y v. Or 6u 2v 1. Now set up two simple equations.
At what speed will the boat run against a current of 8 kmhr in order to go a given distance most economically. 24 km Sboat X 6 h - Sr X 6h upstream. Pacific-class vessels have a maximum range of 2500 nautical miles 4600 km.
Speed down stream x 2 k m h r. Put in the above equation we get 24u 16v 6. How long will it take her to go the 22 km.
Armament varies depending on the operating nation. Let the speed of the boat in still water be x kmhr. Q 4 - The speed of the boat in still water is 15 kmhr.
Find the speed of the boat in still water. X 4 kmh. Your boats fuel consumption is not nearly as easy to figure out compared to your car or truck.
4 Multiplying 4 by 4 we get. Speed of the stream 4 kmh. Many boaters use past boat trips as a benchmark when calculating travel time to estimate when they need to leave their dock in order to arrive at a destination on time.