Admin Table of Contents
- 1 How was the problem of traveling upstream solved?
- 2 Which speed is more upstream or downstream?
- 3 What is speed in upstream?
- 4 How long will it take to row 20 km upstream?
- 5 What is the speed of the boat in still water it takes 2 hours?
- 6 What is the speed of the boat in still water and speed of stream?
- 7 Why was the steamboat so important?
How was the problem of traveling upstream solved?
The problem of traveling upstream was solved during the Industrial Revolution by the steam engine. In 1807, Robert Fulton built the first commercial steamboat. It used steam power to travel upstream. Steamboats were soon used to transport people and goods along rivers throughout the country.
Which speed is more upstream or downstream?
In the downstream motion, the boat and the water move in the same direction and thus the speed is more than what it will be when the two are moving opposite to each other. In other words, the upstream motion is slower. A man sitting in the boat will feel that the boat is moving but the water is still.
Does traveling upstream speed up or slow down a boat compared to its speed in still water?
When a boat travels in the same direction as the current, we say that it is traveling downstream. When a boat travels against the current, it travels upstream. The speed of a boat in still water is 30 mph. It takes the same time for the boat to travel 5 miles upstream as it does to travel 10 miles downstream.
What is speed in upstream?
Aptitude :: Boats and Streams Downstream/Upstream: In water, the direction along the stream is called downstream. And, the direction against the stream is called upstream. If the speed of a boat in still water is u km/hr and the speed of the stream is v km/hr, then: Speed upstream = (u – v) km/hr.
How long will it take to row 20 km upstream?
Hence upstream speed = 60 – 15 = 45 km/hr. So time taken to cover 20 km = 20/45*60 = 26.67min.
Why do boats sail faster downstream?
The boat must be moving somewhat sideways. In that “crabbing” motion, the keel moves through the water with an angle of attack. Just as for the sails in the wind, that causes the water on the “high” (more downstream) side of the keel to move faster and create a lower pressure.
What is the speed of the boat in still water it takes 2 hours?
2. What is the speed of the boat in still water? I. It takes 2 hours to cover the distance between A and B downstream….II.
| Speed of the boat = | 1 | (8 + 12) km/hr = 10 km/hr. |
|---|---|---|
| 2 |
What is the speed of the boat in still water and speed of stream?
Given that, the speed boat in still water is 11 km/hr. It is mentioned that the boat can go 12 km upstream and return downstream to its original point in 2 hr 45 min. As speed to stream can never be negative, we consider the speed of the stream(x) as 5 km/hr.
How is upstream speed calculated?
Upstream and Downstream – Formula
- Upstream = (u−v) km/hr, where “u” is the speed of the boat in still water and “v” is the speed of the stream.
- Downstream = (u+v)Km/hr, where “u” is the speed of the boat in still water and “v” is the speed of the stream.
- Speed of Boat in Still Water = ½ (Downstream Speed + Upstream Speed)
Why was the steamboat so important?
Steamboats proved a popular method of commercial and passenger transportation along the Mississippi River and other inland U.S. rivers in the 19th century. Their relative speed and ability to travel against the current reduced the time and expense of shipping. large, flat-bottomed boat used to transport cargo.