Thursday

April 24, 2014

April 24, 2014

Number of results: 267

**UPSTREAM**

THIS EXURSION WITH A BOAT TRAVEL 35KM UPSTREAM AND THEN BACK AGAIN IN 4 H 48 MINUTRE. iF THE SPEED OF THE BOAT I5 K,/H, WHAT IS THE SPEED OF THE CURRENT? Let v be the speed of the current. The boat's speed upstream (relative to the land) is 15-v and the speed downstream is 15+...
*Thursday, December 21, 2006 at 2:21am by CINDY*

**motion problem**

Ric can row upstream against a current at 6kph in 10 hrs while it will take him only 4 hrs going back. how far does he go upstream? (w/ solution pls... tnx)
*Tuesday, November 12, 2013 at 8:35pm by MNHS MNHS*

**algebra**

A boat travel 4 miles upstream with a current of 5 miles per hour. It takes 40 mminutes longer to go upstream. How fast does the boat go downstream
*Sunday, June 1, 2008 at 12:50am by Kim*

**algebra**

a boat goes 16 Km upstream and 24 Km downstream in 6hrs.it can go 12Km upstream and 36 Km in same time.find the speed of boat in still water and speed of the stream
*Sunday, September 5, 2010 at 4:49am by sara*

**algebra**

a boat goes 16 Km upstream and 24 Km downstream in 6hrs.it can go 12Km upstream and 36 Km in same time.find the speed of boat in still water and speed of the stream
*Sunday, September 5, 2010 at 4:50am by sara*

**Math**

Toni rows a boat 4.5 km/h upstream and then turns around and rows 5.5 km/h back downstream to her starting point. If her total rowing time is 48 min, for how long does she row upstream? you can express your answer to the nearest minute. I don't understand how you solve it.
*Saturday, January 17, 2009 at 3:39pm by Angie*

**math **

need help. Young salmon hatch in freshwater steams and then migrate downstream to the ocean at the rate of 70 miles in 8 hours. there they live until they reach spawning age. then they return upstream to fresh water to spawn and usually die soon after. on the upstream trip, ...
*Monday, February 7, 2011 at 4:38am by alicia*

**physics**

Sheena can row a boat at 2.90 mi/h in still water. She needs to cross a river that is 1.22 mi wide with a current flowing at 1.55 mi/h. Not having her calculator ready, she guesses that to go straight across, she should head 60.0° upstream. (a) What is her speed with respect ...
*Thursday, September 13, 2012 at 6:52pm by Christina*

**physics**

Sheena can row a boat at 3.13 mi/h in still water. She needs to cross a river that is 1.10 mi wide with a current flowing at 1.75 mi/h. Not having her calculator ready, she guesses that to go straight across, she should head 60.0° upstream. (a) What is her speed with respect ...
*Sunday, September 8, 2013 at 12:04am by Megan*

**7th Grade Math**

Toni rows a boat 4.5km/h upstream and then turns around and rows 5.5km/h back to her starting point. If her total rowing time is 48 min , for how long does she row upstream?
*Wednesday, January 4, 2012 at 3:34pm by Rebecca*

**Math**

Dayle is paddling his canoe upstream, against the current, to a fishing spot 10 miles always. If he paddles upstream for 2.5 hours and his return trip takes 1.25 hours, find the speed of the current, and his still water????????
*Tuesday, February 1, 2011 at 7:55pm by Candice Watt*

**PHYSICS**

Sheena can row a boat at 2.91 mi/h in still water. She needs to cross a river that is 1.24 mi wide with a current flowing at 1.54 mi/h. Not having her calculator ready, she guesses that to go straight across, she should head 60.0° upstream. (a) What is her speed with respect ...
*Tuesday, January 31, 2012 at 7:14pm by Anonymous*

**algebra**

36 Upstream, downstream. Junior’s boat will go 15 miles per hour in still water. If he can go 12 miles downstream in the same amount of time as it takes to go 9 miles upstream, then what is the speed of the current?
*Friday, December 4, 2009 at 2:30am by Linda*

**MATH!!!!!!!**

The river boat paddled upstream at 12km/h, stopped for 2 h of sightseeing, and paddled back at 18km/h. How far upstream did the boat travel if the total time for the trip, including the stop, was 7h? Please help me, the answer is 36 km but i have no idea how to set it up
*Tuesday, January 8, 2008 at 8:34pm by bert*

**PHYSICS**

Sheena can row a boat at 2.91 mi/h in still water. She needs to cross a river that is 1.24 mi wide with a current flowing at 1.54 mi/h. Not having her calculator ready, she guesses that to go straight across, she should head 60.0° upstream. (a) What is her speed with respect ...
*Monday, January 30, 2012 at 1:08am by Anonymous*

**algebra**

Show a complete solution. Upstream, downstream. Junior’s boat will go 15 miles per hour in still water. If he can go 12 miles downstream in the same amount of time as it takes to go 9 miles upstream, then what is the speed of the current?
*Friday, July 17, 2009 at 1:40am by Sandra*

**Physics**

Salmon often jump upstream through waterfalls to reach their breeding grounds. One salmon came across a waterfall 1.30 m in height, which she jumped in 1.3 s at an angle of 72° to continue upstream. What was the initial speed of her jump? (Assume the launch angle is measured ...
*Monday, May 21, 2012 at 5:24pm by James*

**Math**

Steve can kayak at 8 km/h in still water. On the river, Steve and the kayak travel slower upstream due to the current. It takes him 1.5 h for a trip downstream, but 3.25 h for the same distance upstream. Determine the speed of the river’s current.
*Wednesday, June 19, 2013 at 9:59pm by Maggie*

**Physics**

A boat must cross a 260-m-wide river and arrive at a point 110 upstream from where it starts. To do so, the pilot must head the boat at a 45 degree upstream angle. THe current has speed 2.3 m/s. a) What is the speed of the boat in still water? b) How much time does the journey...
*Tuesday, February 5, 2013 at 1:09am by Chris*

**Math**

A boat, whose speed in still water is 2.80m/s , must cross a 280m wide river and arrive at a point 120m upstream from where it starts. To do so, the pilot must head the boat at a 45.0 degrees upstream angle. What is the speed of the river's current?
*Saturday, September 12, 2009 at 1:12pm by Anne*

**math**

A boat travels 8km upstream and back in 2 hours. If the current flows at a constant speed of 3km/h, Find the speed of the boat in still water.(when the boat goes upstream, it speed reduces by 3km/h, and when going downstream, its speed increases by 3 km/h)
*Tuesday, January 15, 2013 at 5:48am by zshen*

**Maths**

A river flows at 3km/h. At what speed must a boat travel in order to make a 35km trip upstream in a time of 50 minutes? How long will it take the boat to make the return trip downstream? (Assume the boat retains the speed travelled upstream) Working out please
*Thursday, October 6, 2011 at 7:52pm by Babiinoob*

**college-Physics**

Two canoeists in identical canoes exert the same effort paddling and hence maintain the same speed relative to the water. One paddles directly upstream (and moves upstream), whereas the other paddles directly downstream. With downstream as the positive direction, an observer ...
*Wednesday, September 24, 2008 at 6:10pm by Tristan*

**Physics**

Two canoeists in identical canoes exert the same effort paddling and hence maintain the same speed relative to the water. One paddles directly upstream (and moves upstream), whereas the other paddles directly downstream. With downstream as the positive direction, an observer ...
*Wednesday, September 24, 2008 at 6:08pm by Tristan*

**physics**

Two canoeists in identical canoes exert the same effort paddling and hence maintain the same speed relative to the water. One paddles directly upstream (and moves upstream), whereas the other paddles directly downstream. With downstream as the positive direction, an observer ...
*Wednesday, September 24, 2008 at 6:56pm by Tristan*

**Physics**

You are riding on a jet ski directed at an angle upstream on a river flowing with a speed of 2.8 m/s. If your velocity relative to the ground is 8.2 m/s at an angle of 25.0° upstream, what is the speed of the jet ski relative to the water?
*Sunday, August 28, 2011 at 9:22pm by Nikki*

**Algebra 2**

A boat has a 10 gallon gasoline tank and travels at 20mi/hr with a fuel consumption of 16mi/gal when operated at full throttle in still water. The boat is moving upstream into a 5mi/hr current. How far upstream can the boat travel and return on 10 gallons of gasolineif it is ...
*Thursday, November 3, 2011 at 10:52am by GY*

**Physics**

You are riding on a Jet Ski at an angle of 35¢ª upstream on a river flowing with a speed of 2.8 m/s. If your velocity relative to the ground is 9.5 m/s at an angle of 20.0¢ª upstream, what is the speed of the Jet Ski relative to the water? (Note: angles are measured relative ...
*Thursday, March 13, 2008 at 4:18pm by Clarita*

**Physics**

You are riding on a jet ski directed at an angle upstream on a river flowing with a speed of 2.8 m/s. If your velocity relative to the ground is 8.9 m/s at an angle of 26.0° upstream, what is the speed of the jet ski relative to the water? (Note: Angles are measured relative ...
*Sunday, October 14, 2012 at 2:17pm by HELP PLEASE*

**physics**

You want to swim straight across a river that is 76m wide. You find that you can do this if you swim 28 degrees upstream at a constant rate of 1.7m/s relative to water. At what rate does the river flow? The angle is measure from the river bank (directly upstream is 0 degrees ...
*Sunday, March 7, 2010 at 10:23pm by Amber*

**physics**

A fisherman sets out upstream from Metaline Falls on the Pend Oreille River in northwestern Washington State. His small boat, powered by an outboard motor, travels at a constant speed v in still water. The water flows at a lower constant speed vw. He has traveled upstream for ...
*Wednesday, February 16, 2011 at 12:36pm by Anonymous*

**physics**

A fisherman sets out upstream from Metaline Falls on the Pend Oreille River in northwestern Washington State. His small boat, powered by an outboard motor, travels at a constant speed v in still water. The water flows at a lower constant speed vw. He has traveled upstream for ...
*Friday, February 18, 2011 at 12:33pm by Anonymous*

**Physics**

A boat moves through the water of a river at 5 m/s relative to the water, regardless of the boat's direction. If the water in the river is flowing at 1.3 m/s, how long does it take the boat to make a round trip consisting of a 215 m displacement downstream followed by a 215 m ...
*Sunday, June 1, 2008 at 2:38pm by Elisa*

**Physics**

A boat moves through the water of a river at 5 m/s relative to the water, regardless of the boat's direction. If the water in the river is flowing at 1.3 m/s, how long does it take the boat to make a round trip consisting of a 215 m displacement downstream followed by a 215 m ...
*Sunday, June 1, 2008 at 2:41pm by Elisa*

**Algebra II**

I've been working on this one and I just can't figure it out. I appreciate all the help: Two miles upstream from his starting point, a canoeist passed a log floating in the river's current. After paddling upstream for one more hour, he paddled back and reached his starting ...
*Wednesday, October 29, 2008 at 6:09pm by Aaron*

**Algebra 2**

how would you solve: the current in the river flowed at 3 mph. The boat could travel 24 mph downstream in half the time it took to travel 12 mi upstream. what was the speed of the boat in still water? please help. The time required to go any distance upstream a distance L is L...
*Sunday, June 18, 2006 at 12:28pm by Jonathan*

**algebra**

could you please show me how to do this problem? Bob rows 6 miles downstream in 1 hr, joe rows 6 miles upstream in 2 hr. joe rows 1 mile per hour faster. a. what is each of their speed, bob 6/1=6mph joe 6 + 1 = 7mph is this right?? b. what is the current speed?? downstream R...
*Sunday, April 15, 2012 at 3:14am by ann*

**Economics**

A large firm has two divisions: an upstream division that is a monopoly supplier of an input whose only market is the downstream division that produces the final output. To produce one unit the final output, the downstream division requires one unit of the input. If the ...
*Wednesday, June 15, 2011 at 6:58pm by Kathy*

**Algebra. Please help(:**

The time required for a trip 108 miles downstream on a steamer is 3 hours less than the time required for the upstream trip. A boat whose rate is 6 miles per hour less than that of the steamer required 9 hours more for the upstream trip than for the downstream trip. Find the ...
*Sunday, April 22, 2012 at 6:15pm by My Name Is Bob*

**Algebra**

The time required for a trip 108 miles downstream on a steamer is 3 hours less than the time required for the upstream trip. A boat whose rate is 6 miles per hour less than that of the steamer required 9 hours more for the upstream trip than for the downstream trip. Find the ...
*Friday, April 11, 2014 at 11:02pm by Summer*

**Physics**

Two canoeists in identical canoes exert the same effort paddling and hence maintain the same speed relative to the water. One paddles directly upstream (and moves upstream), whereas the other paddles directly downstream. With downstream as the positive direction, an observer ...
*Sunday, February 19, 2012 at 11:47pm by Anonymous*

**word problem**

A motor boat took 4 hours to make a downstream trip with a current of 3mph. The return trip against the same current took 8 hours. Find the speed of the boat in still water. Call Y the boat's rate. distance = rate x time. downstream rate of boat is Y+3. t=4 hrs. upstream rate ...
*Thursday, June 22, 2006 at 9:11pm by marie*

**Algebra 2**

It is a beautiful spring day so you decide to go rowing upstream on your favorite river. You row at a constant rate of 1 mile per hour. Suddenly a gust of wind blows your hat off into the water. You watch it float away downstream but since you never really liked it that much, ...
*Monday, February 8, 2010 at 11:50pm by John*

**physics**

You are riding on a jet ski at an angle upstream on a river flowing with a speed of 2.8 m/s. Suppose the jet ski is moving at a speed of 18 m/s relative to the water. (a) At what angle must you point the jet ski if your velocity relative to the ground is to be perpendicular to...
*Monday, May 14, 2007 at 7:55pm by micole*

**Science**

A boat is sailing 42 km/hr upstream on a river that is moving at 16 km/hr downstream. What is the velocity of the sailboat.....can you show me the formula too...not understanding this
*Wednesday, November 28, 2012 at 12:50am by Joy*

**Thermodynamics**

In a multiple-device flow system, I want to determine a state property. Where should I look for information, upstream or downstream?
*Monday, May 13, 2013 at 7:18pm by Kyle*

**physics**

a motorboat travels 25.0 km/h in still water. what will be the magnitude and direction of the velocity of the boat if it is directed upstream on a river that flows at the rate of 4.00 km/h?
*Thursday, August 4, 2011 at 10:56am by Anonymous*

**college math**

boat travels 160 miles downstream in the same time that it takes to go 96 upstream. the pead of the stream is 6 mph. what is the speed of still water
*Friday, March 9, 2012 at 4:57pm by victor*

**math**

The speed of a boat in still water is 8 km/h. It travels 60 km upstream and 60 km downstream in a total time of 16 hours. What is the speed of the stream?
*Tuesday, March 23, 2010 at 5:06pm by Tonto*

**physics **

A boat, whose speed is 1.75 m/s must aim upstream at an angle of 26.3 degrees ( with respect to a line perpendicular to the shore) in order to travel directly across the stream?
*Thursday, September 12, 2013 at 12:23am by Izzy*

**how do i set up this problem?**

A cruise boat travels 48 miles downstream in 3 hours and returns upstream in 6 hours. Find the rate of the stream
*Sunday, March 8, 2009 at 9:40pm by Angela G*

**math**

Solve the problem. A cruise boat travels 48 miles downstream in 3 hours and returns upstream in 6 hours. Find the rate of the stream.
*Friday, March 20, 2009 at 6:44pm by anthony*

**math**

a boat travels 4 km upstream and 4 km back. the time for the round trip is 9 hrs. the speed of the stream is 2 km/hr. What is the speed of the boaty in still water?
*Sunday, April 3, 2011 at 3:06pm by Anonymous*

**math**

a kayak travels 15/h in still water and if the current flows at a rate a 3km/h how long will it take for the kayak to travel 30km upstream
*Monday, December 17, 2012 at 8:25pm by yvette*

**maths**

A motor boat goes downstream twice as fast as upstream. Find the power speed of the boat if the water flows at 6km/h.
*Monday, December 24, 2012 at 1:40pm by Anonymous*

**Math**

A river flows at the rate of 2 mph. If a motorboat can travel 12 miles upstream and return in a total of 2.5 hours, what is the speed of the motorboat in still water?
*Monday, April 11, 2011 at 3:48pm by Anonymous*

**Physics - urgent, please help**

In its final trip upstream to its spawning territory, a slamon jumps to the top of a waterfall 1.9m high. What is the minimum vertical velocity needed by the salmon at the end of this motion?
*Saturday, February 21, 2009 at 10:59pm by Li*

**world geography**

in forming the great lakes, glaciers: _a. melted in upstream rivers and streams. _b. forced the earh's crust upward _c. carved basins out of bedrock _d. froze the topsoil
*Monday, May 28, 2012 at 3:44pm by natasha napier*

**algebra**

tana rode a boat 1 km upstream in and hour. rowing at the same rate, she made the return trip downstream in 15 minutes. find the rate of the current
*Friday, April 29, 2011 at 3:17pm by lee*

**Algebra 2**

The speed of the current is 5m/h. Angie goes upstream 25 miles and returns to the doc. The whole trip takes 12 hours. What is the speed of the boat in still water?
*Wednesday, May 11, 2011 at 1:32pm by Lori*

**math**

A river has a current of 4 mph. Find the speed of Simon’s boat in still water if it goes 40 miles downstream in the same time as 24 miles upstream.
*Monday, July 23, 2012 at 11:15pm by john*

**Please help**

A motorboat can travel upsteam on a river at 18km/h and downsteam at 30km/h. How far upstream can the boat travel if it leaves at 8:00am and must return by noon?
*Thursday, January 3, 2013 at 2:49pm by Ashley*

**math help please**

Solve the problem. A boat can go 33 mph in still water. It takes as long to go 300 miles upstream as it does to go downstream 360 miles. How fast is the current?
*Friday, March 20, 2009 at 5:54pm by anthony*

**maths**

22. A motor boat whose speed is 18 km/h in still water takes 1 hour more to go 24 km upstream than to return downstream to the same spot. Find the speed of the stream
*Saturday, March 6, 2010 at 7:38am by kaur*

**Math**

Victoria has a boat that can move at a speed of 20km/h in still water. She rides 140km downstream in the same time it takes 35km upstream. What is the speed of the river?
*Thursday, May 17, 2012 at 2:57am by Courtney*

**math**

A kayak moves at a rate of 12 mph in still water. If the rivers current flows at a rate of 5mph how long does it take the boat to travel 23 miles upstream?
*Sunday, September 16, 2012 at 8:41pm by ashley*

**math (algerba 1)**

A motorboat can travel upstream on a river at 18km/h and downstream at 30km/h. How far upsteam can the boat travel if it leaves at 8am and must return by noon?
*Wednesday, January 2, 2013 at 6:26pm by Kate*

**math (algerba 1)**

A motorboat can travel upsteam on a river at 18km/h and downsteam at 30km/h. How far upstream can the boat travel if it leaves at 8:00am and must return by noon?
*Thursday, January 3, 2013 at 12:07pm by Ashley*

**math**

a motorboat takes 5 hours to travel 45km downstream and then 18 km upstream on a river whose current flow of the rate of 3 km/hr. how fast can the boat travel in still water?
*Wednesday, March 6, 2013 at 9:48pm by sofia*

**Math**

JJ's boat will go 15 mph in still water. If he can go 12 mph downstream in the same amount of time it takes to go 9 mph upstream, what is the speed of the current?
*Sunday, March 25, 2012 at 2:19pm by Sarah *

**physics**

A boat is ravelling in a river with a current of 3 km/hr. The boat is capable of travelling at 10 km/hr in still water. How long will it take the boat to travel 7km upstream
*Friday, January 28, 2011 at 1:19pm by Tunde*

**physics**

Traffic shock wave. An abrupt slowdown in concentrated traffic can travel as a pulse, termed a shock wave, along the line of cars, either downstream (in the traffic direction) or upstream, or it can be stationary. Figure 2-22 shows a uniformly spaced line of cars moving at ...
*Monday, October 10, 2011 at 11:30am by turk*

**Math**

A boat, which moves at 18 mph in still water, travels 14 miles downstream in the same amount of time it takes to travel 10 miles upstream. Find the speed of the current.
*Wednesday, July 27, 2011 at 1:38pm by Antione*

**MaTh**

Debbie traveled by boat 5miles upstream to fish in her favourite spot> Because of the 4-mph current, it took her 20 minutes longer to get there than to return. How fast will her boat go in still water ???? Please help !!!!!!!!!!!!!!
*Saturday, September 22, 2007 at 9:54am by mo*

**alegrbra**

A tugboat is going 100 miles upstream in 10 hours and returning downstream in 5 hours. What is the boats speed and the speed of the current?
*Sunday, August 26, 2012 at 3:57pm by a tugboat is going 100 miles upstream in 10 hours and returning downstream in 5 hours. What is the s*

**Math**

A boat travels 1 km upstream and 1 km back. The time for the round trip is 4 hours. The speed of the stream is 5 km/hr. What is the speed of the boat in still water?
*Friday, November 30, 2012 at 9:56pm by Rilee*

**sciencwe**

rosa boat is padding upstream at 1.25 m/sec. and the water in the river is flowing at .50 m/sec to the banks of the river. calculate the resultant velocity
*Thursday, January 10, 2013 at 6:24pm by mickey*

**algebra**

Gone fishing. Debbie traveled by boat 5 miles upstream to fish in her favorite spot. Because of the 4-mph current, it took her 20 minutes longer to get there than to return. How fast will her boat go in still water
*Thursday, October 8, 2009 at 2:07pm by Anonymous*

**ALGEBRA**

Jim paddles a canoe upstream at a rate o 3mi/hr. Traveling downstream, he travels at 8 mi/hr. What is his rate in still water and what is the rate of the current? PLEASE SHOW THE SOLUTION EQUATION
*Saturday, May 26, 2012 at 11:23pm by chris*

**Algebra 2**

A boat travels 60 km upstream and back again in 8 hours. If the speed of the boat is 16 km/h, what is the speed of the current?
*Sunday, October 18, 2009 at 7:29pm by Trisan*

**math**

28 miles downstream in 2 hours 12 miles upstream in 3 hours what would the be speed in still water
*Monday, September 24, 2012 at 11:37pm by kyla*

**intermediate algebra**

a motorboat moves 25 miles per hour in still water. it travels 21 miles upstream and 21 miles downstream in a total time of 2.0 hours. whatis the speed of the current?
*Sunday, October 6, 2013 at 5:33pm by Ernie*

**maths**

a steamer goes downstream in a river and covers the distance between upstream in 6 hours if the speed of the stream is 3 km/hr. firnd the speed of the steamer in still water.
*Tuesday, May 24, 2011 at 4:35am by Abhishek*

**applications involving quadratic**

Abby rows 10 km upstream and 10 km back in a total time of 3 hr. The speed of the river is 5km/h. Find Abby’s speed in still water.
*Sunday, June 19, 2011 at 11:32am by Elisa*

**algebra**

rowing. Abby rows 10 km upstream and 10 km back in a total time of 3 hours. The speed of the river is 5km/h.Find Abby's speed in still water.
*Saturday, July 30, 2011 at 9:30pm by sheba*

**Math**

a motorboat can go 24 miles downstream in the same amount of time that it takes to go 12 miles upstream. The boats speed in still water is 12 mph. What is the speed of the river? mi/hr?
*Thursday, April 5, 2012 at 1:25pm by Nancy*

**elem algebra**

the current in a stream moves at a speed of 10 mph. a boat travels 17 mi upstream and 17 mi downstream in a total time of 10 hr. What is the speed of the boat in still water?
*Saturday, April 19, 2014 at 3:27pm by jan*

**physics**

A motorboat whose speed in still water is 3.00 m/s must aim upstream at an angle of 27.0^\circ (with respect to a line perpendicular to the shore) in order to travel directly across the stream. What is the speed of the current?
*Tuesday, September 21, 2010 at 3:02pm by Mark*

**Physics**

A rowboat crosses a river with a velocity of 3.42 mi/h at an angle 62.5° north of west relative to the water. The river is 0.805 mi wide and carries an eastward current of 1.25 mi/h. How far upstream is the boat when it reaches the opposite shore?
*Sunday, September 11, 2011 at 7:30pm by Elaine Jetton*

**physic**

A rowboat crosses a river with a velocity of 3.42 mi/h at an angle 62.5° north of west relative to the water. The river is 0.610 mi wide and carries an eastward current of 1.25 mi/h. How far upstream is the boat when it reaches the opposite shore?
*Sunday, February 26, 2012 at 2:55am by jen*

**physics**

A rowboat crosses a river with a velocity of 4.23 mi/h at an angle 62.5o north of west relative to the water. The river is 0.543 mi wide and carries an eastward current of 0.73 mi/h. How far upstream is the boat when it reaches the opposite shore?
*Wednesday, September 19, 2012 at 4:25pm by lib*

**physics**

A rowboat crosses a river with a velocity of 3.55 mi/h at an angle 62.5o north of west relative to the water. The river is 0.850 mi wide and carries an eastward current of 0.57 mi/h. How far upstream is the boat when it reaches the opposite shore?
*Wednesday, September 19, 2012 at 10:40pm by Anonymous*

**Physics**

A rowboat crosses a river with a velocity of 3.30 mi/h at an angle 62.5° north of west relative to the water. The river is 0.795 mi wide and carries an eastward current of 1.25 mi/h. How far upstream is the boat when it reaches the opposite shore?
*Friday, January 25, 2013 at 11:25am by Dan*

**Physics**

A rowboat crosses a river with a velocity of 3.37 mi/h at an angle 62.5° north of west relative to the water. The river is 0.590 mi wide and carries an eastward current of 1.25 mi/h. How far upstream is the boat when it reaches the opposite shore?
*Friday, May 3, 2013 at 5:30pm by Abdul A.*

**Physics**

A rowboat crosses a river with a velocity of 3.37 mi/h at an angle 62.5° north of west relative to the water. The river is 0.590 mi wide and carries an eastward current of 1.25 mi/h. How far upstream is the boat when it reaches the opposite shore?
*Tuesday, May 7, 2013 at 8:01am by Abdalla A.*

**Math (urgent) hw due tommorow!**

The speed of a stream is 3 km/h. A boat travels 25 km upstream in the same time it takes to travel 35 km downstream. What is the speed of the boat in still water?
*Monday, August 30, 2010 at 8:52pm by anj*

**word problem**

2. The excursion boat Holiday travels 35km upstream and then back again in 4h 48min. If the speed of the Holiday in still water is 15km/h, what is the speed of the current?
*Friday, October 8, 2010 at 6:59am by Jessica*

**Algebra**

Manuel has a boat that can move at a speed of 30 kn/h in still water. He rides 280 km downstream in a river in the same time it takes to ride 70 km upstream. What is the speed of the river?
*Wednesday, November 3, 2010 at 10:05pm by Dusty*

**Algebra**

A kayak moves at a rate of 10 mph in still water. If the river's current flows at a rate of 2 mph, how long does it take the boat to travel 24 miles upstream?
*Monday, February 6, 2012 at 10:50pm by Andy*

**math/physics**

A motorboat whose speed in still water is 3.00 m/s must aim upstream at an angle of 27.0 degrees (with respect to a line perpendicular to the shore) in order to travel directly across the stream. What is the speed of the current?
*Tuesday, September 21, 2010 at 4:21pm by cindy*