0
A motorboat takes 5 hours to travel 300 km going upstream The return trip takes 2 hours going downstream. What is the rate of the boat in still water and what is the rate of the current?
Wiki User
∙ 14y ago
Velocity = Distance ÷ Time.
The speed upstream = 300 ÷ 5 = 60kph.
The speed downstream = 300 ÷ 2 = 150 kph.
The speed upstream equals boat velocity(Vb) minus current velocity(Vc).
The speed downstream equals boat velocity (Vb) pluscurrent velocity (Vc).
Vb - Vc = 60
Vb + Vc = 150 : Adding the two equations together gives :-
2Vb = 210 : Vb = 105, therefore Vc = 45
The rate of the boat in still water is 105 kph. The rate of the current is 45 kph.
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
A fishing boat traveled 3 hours against a 6 kmhr current The return trip took only 2 hours Find the speed of the boat?
The speed of the boat is 36 km/h. Going upstream: 3h x 36km/h = 108 km, minus (6x3 =18 km) = 90 km Going downstream: 2h x 36km/h = 72 km, plus (6x2 =12 km) = 90 km
A boat can travel from its dock to a town downriver with a 7 mph current in 10 hours. The return trip against the same current takes 15 hours. What is the speed of the boat in still water?
35 mph
A stock is expected to pay a dividend of 0.75 at the end of the year The required rate of return is rs equals 10.5 percent and the expected constant growth rate is g equals 6.4 percent?
A stock is expected to pay a dividend of $0.75 at the end of the year. The required rate of return is rs = 10.5%, and the expected constant growth rate is g = 6.4%. What is the stock's current price?
What happens to the quick return ratio when the stroke length is reduced?
What happens to the quick return ratio when the stroke length is reduced?
What is the frequency of first tranche return?
Type your answer here... weekly
If a motorboat can go 8 miles downstream on a river in 20 mins if the return 8 miles upstream takes 30 minutes what is the speed of the current?
The current is approximately 4 mph.
What river has the nickname of River of no return?
The "River of No Return" is the nickname of a branch of the Salmon River in central Idaho. The river is famous for its strong rapids. The Lewis and Clark Expedition of 1805 was told that if they made it down this river, they would never be able to make it back upstream against the current. Without a motorboat, this still holds true today.
A boat on the Missouri river took 2 hours to go 48 miles downstream. The boat took 3 hours to return the same distance upstream. Find the rate of the boat in still water and the rate of the current.?
Boats speed = 24 miles per hour.Current speed = 4 miles per hour.
It takes a motor boat 3 hours to make a downstream trip with a current of 7 miles per hour the return trip against the same current took 5 hours find the speed of the boat in still water?
Since the distance downstream (with the current) equals the distance upstream (against the current), and if we: Let B stand for the speed (rate in mph) of the boat in still water, and using the formula rate X time = distance, the equation will be: (B+7) x 3 = (B-7) x 5 3B + 21 = 5B - 35 56 = 2B B = 28 mph Traveling downstream, the current will cause the boat to go faster so the 7 mph current is added to the boat's still water speed. Traveling upsteam the current slows or decreases the boat's rate so the current's speed is subtracted from the boat's still water speed.
Is there anything unusual about a salmon spawn?
Salmon seem to remember where they were hatched and will attempt to return to the spot. The unusual thing about this is, sometimes it involves swimming,upstream or against the current.
A boat makes a 120-mile trip downstream in 3 hours but makes the return trip in 4 hours. What is the rate of the current?
It is 5 miles per hour.
How can a salmon swims upstream using Newtions Third law of motion?
Fish swim upstream by powerfully thrusting their tails to counteract the current. They are then able to slowly but surely travel upstream.
If you pull water out of one basin and do not return who would it effect more?
The people downstream.
Why does salmon swim against the current?
They go on it because it is the fate of their life. They are born to travel to the ocean and then come back lay their eggs and die. Them dieing supports many species and the forest its self. It is a very interesting story. Check this page out http://www.squidoo.com/TheSalmonRun
A fishing boat traveled 3 hours against a 6 kmhr current The return trip took only 2 hours Find the speed of the boat?
The speed of the boat is 36 km/h. Going upstream: 3h x 36km/h = 108 km, minus (6x3 =18 km) = 90 km Going downstream: 2h x 36km/h = 72 km, plus (6x2 =12 km) = 90 km
A boat can travel 24 miles downstream in 2 hours and can make the return trip in 3 hours so what is the speed of the boat in still water and the speed of the current?
Whilst travelling downstream the boat travels at V + C mph where V is the speed of the boat in still water and C is the speed of the current. Whilst travelling upstream the speed is V - C mph. The downstream velocity = 24/2 = 12mph = V + C therefore C = 12 - V Velocity (speed) = Distance ÷ Time : therefore Distance = Velocity x Time. As the distance in either direction is the same then, 2(V+C) = 3(V-C) 2V + 2C = 3V - 3C V = 5C : substituting for C as C = 12-V V = 5(12 - V) = 60 - 5V 6V = 60 : V = 10 mph. Therefore, C = 12 - 10 = 2 mph The speed of the boat in still water is 10 mph and the speed of the current is 2 mph.
When will Ronnie return to Eastenders?
There are no current plans for her to return.
