How do you find the speed of a boat in still water and the speed of the current?
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How do you find the speed of a boat in still water and the speed of the current?
Answer: The speed of the boat in still water or ‘b’ = 10 km/h. The speed of the current or the river = 4 km/h. Therefore the speed of the boat when going upstream = b – r = 10 – 4 = 6 km/hr. Therefore the distance covered in one hour = 6/1 = 6 km.
How do you calculate average speed in a boat and stream?
{(Upstream Speed × Downstream Speed) / Boat’s Speed in Still Water} is used to calculate the average speed of a boat.
What is the speed of boat in still water?
The speed of a boat in still water is 11 km/hr.
What is the speed of the boat in still water it takes two hours to cover the distance between A and B downstream?
The boat covers the same distance in 4 hours while running downstream. E. km/hr = 8 km/hr….II.
| 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. |
How do you calculate stream speed?
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 downstream = (u + v) km/hr. Speed upstream = (u – v) km/hr….Exercise :: Boats and Streams – Important Formulas.
| Rate of stream = | 1 | (a – b) km/hr. |
|---|---|---|
| 2 |
How do you calculate the speed of a stream?
How do you measure the speed of a stream?
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)
How do you measure the speed of a boat?
The speed of a boat having an engine to deliver P horsepower and displacing D pounds is written as: S = Speed = sqrt(P / D) * C , where S is the boat speed and C is the Crouch constant. The above equation is known as Crouch’s formula.
What is stream rate?
speed upstream = b km/hr. Let rate of the stream = x km/hr. speed in still water = y km/hr.