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 it takes 4 hours to cover the distance between A and B upstream?
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 it takes 4 hours to cover the distance between A and B upstream?
It takes 2 hours to cover the distance between A and B downstream. It takes 4 hours to cover the distance between A and B upstream. if the data in Statement I alone are sufficient to answer the question, while the data in statement II alone are not sufficient to answer to question.
What will be the boat’s speed in still water and speed of river if the boat takes 12 hours to row 48 km upstream and 8 hours to row the same distance downstream?
12 km upstream in 48 min. ⇒ it will cover 15 km in 1 hr. Speed of stream = 2 km / hr. ∴ Speed of boat in still water = 15 + 2 = 17 km / hr.
How long will it take to row 20 km upstream if one can row 10 km in 10 minutes in still water and the same distance in 8 minutes with the stream?
Time requires to travel 20 km upstream is 26.67 min . One can row 10 km in 10 minutes in still water . The same distance in 8 minutes with the stream . Let , speed of stream be u and speed of boat is v . Therefore , for case 1 .
What is speed of current in boat and stream?
In one hour, a boat goes 11 km/hr along the stream and 5 km/hr against the stream. The speed of the boat in still water (in km/hr) is: A. (11 + 5) kmph = 8 kmph….Exercise :: Boats and Streams – General Questions.
| A. | 2 hours |
|---|---|
| B. | 3 hours |
| C. | 4 hours |
| D. | 5 hours |
How do you solve a boat and stream problem easily?
Some Important Shortcuts:
- Suppose a man can row a boat at a speed of r km/hr in still water and covers the same distance up and down in a stream while a stream flows at a speed of s km/hr.
- A man rows downstream by covering a certain distance in p1 hours and returns the same distance upstream in p2 hours.
Is still water upstream or downstream?
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 does stream mean?
(Entry 1 of 2) 1 : a body of running water (such as a river or creek) flowing on the earth also : any body of flowing fluid (such as water or gas) 2a : a steady succession (as of words or events) kept up an endless stream of chatter. b : a constantly renewed or steady supply a stream of revenue.
What is the relation between speed distance and time?
Speed is distance divided by the time taken. For example, a car travels 30 kilometers in 2 hours. Its speed is 30 ÷ 2 = 15km/hr.
How can I calculate speed?
Google Maps can tell you your speed, it has an inbuild speedometer, which is only currently for Android users. It is on by default, but to make sure if it is on, go to settings → navigation settings, and under the driving options menu there will be a slider for it.
Does speed depend on time?
Yes time is dependent on speed. If you move faster and faster the time will become slower. But with respect to you every thing seems to be normal. In the same way if you observe the system X you feel the time is running ahead and in your system you feel it’s reasonable.
How does distance affect speed?
“Faster” means either “farther” (greater distance) or “sooner” (less time). Doubling one’s speed would mean doubling one’s distance traveled in a given amount of time. Doubling one’s speed would also mean halving the time required to travel a given distance.
How does speed affect time?
Einstein’s theory of special relativity says that time slows down or speeds up depending on how fast you move relative to something else. Approaching the speed of light, a person inside a spaceship would age much slower than his twin at home. Also, under Einstein’s theory of general relativity, gravity can bend time.
What’s an example of constant speed?
Constant speed is also called as uniform rate which involves something travelling at fixed and steady pace or else moving at some average speed. For example, A car travels 3 hours. It travels 30 miles in the first hour, 45 miles in the second hour and 75 miles in the third hour.
Is constant speed a balanced force?
When we push or pull an object we can make it move. If we push the car we make it move because our push is greater than the other forces acting upon it. If, on the other hand, an object is moving at a constant speed in a straight line then again the forces are said to be balanced.
Why does a toy car eventually stop?
If an object such as a toy car is given a push across a flat surface, there is initially a forward force acting on it; however, once it is allowed to move freely, there is no forward force. Friction exerts a force in the opposite direction to the object’s motion and is the reason it eventually stops moving.
Is gravity a balanced force?
Forces acting on an object may be balanced or unbalanced. When the forces acting on an object have equal strength and act in opposite directions, they are balanced. Gravity is a force that pulls objects toward one another. For example, Earth pulls all objects toward it.
What is the greatest force at work on Earth?
The strong nuclear force, also called the strong nuclear interaction, is the strongest of the four fundamental forces of nature.
What is the strongest and weakest force?
Actually, gravity is the weakest of the four fundamental forces. Ordered from strongest to weakest, the forces are 1) the strong nuclear force, 2) the electromagnetic force, 3) the weak nuclear force, and 4) gravity.
What is the strongest force on earth love?
When scientists looked for a unified theory of the universe they forgot the most powerful unseen force. Love is Light, that enlightens those who give and receive it. Love is gravity, because it makes some people feel attracted to others.
Which is the powerful force?
The strongest of these is the strong nuclear force, which is 100 times stronger than the electromagnetic force – the next strongest of the four forces. The strong nuclear force operates only within the nucleus of an atom and so is not experienced directly within everyday life.
Who is the most powerful force user?
- Darth Sidious.
- Yoda.
- Darth Caedus.
- Vitiate.
- Darth Nihilus.
- Darth Plagueis.
- Darth Vader/ Anakin Skywalker.
- Darth Bane.
What is the strongest type of energy?
gamma-ray bursts