Monday

November 30, 2015
Number of results: 366

**Physics**

A swimmer is heading straight for the other shore of a river with a velocity of vs=0.7 m/s relative to the water, but is carried away by the current, which has a velocity of vr=0.3 m/s. It takes her 20.3 s to get across. How far downstream does she end up? This is what I did ...
*September 23, 2010 by Nicole*

**algebra**

A boat on a river travels downstream between two points, 70 mi apart, in one hour. The return trip against the current takes 2 1 2 hours. What is the boat's speed (in still water)
*November 9, 2012 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
*May 26, 2012 by chris*

**math**

28 miles downstream in 2 hours 12 miles upstream in 3 hours what would the be speed in still water
*September 24, 2012 by kyla*

**physics**

The current of a river is 1.9 m/s. A person can swim 0.7 m/s. What is the best angle for the swimmer so that it is swept downstream the shortest distance possible? Distance of river is 120 m.
*February 22, 2010 by matthew*

**Physics 11**

A river has a current of 5 m/s. A boat tries to head directly across at 4 m/s. When the boat reaches the other side it is 30m downstream. How wide is the river ?
*October 18, 2010 by Denny *

**physics 11**

A river has a current of 5 m/s. A boat tries to head directly across at 4 m/s. When the boat reaches the other side it is 30m downstream. How wide is the river ?
*October 19, 2010 by joshua*

**algebra**

A speedboat moves at a rate of 21 km/hr in still water. How long will it take someone to ride the boat 60 km downstream if the river's current moves at a rate of 9 km/hr?
*August 18, 2012 by nola*

**math**

A speedboat moves at a rate of 21 km/hr in still water. How long will it take someone to ride the boat 60 km downstream if the river's current moves at a rate of 9 km/hr?
*August 18, 2012 by nola*

**algebra1 **

Sam rows up a river to camp in three hours.The next day he makes the return trip downstream in one hour. If he can row two mph in still water, how fast is the current? i dont understand this?
*January 18, 2013 by naomi*

**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?
*October 6, 2013 by Ernie*

**physics**

Water is flowing at 3 m/s in a circular pipe. If the diameter of the pipe decreases to four-ninth its former value, what is the velocity of the water downstream? Answer in units of m/s.
*November 5, 2008 by Lines in the Sand122*

**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.
*May 24, 2011 by Abhishek*

**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?
*April 5, 2012 by Nancy*

**Math 111**

It takes a motorboat 1 1/3 hours to go 20 miles downstream and 2 2/9 hours to return.Find the rate of the current andthe rate of the boat in still water.
*December 14, 2013 by Jeriah*

**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?
*April 19, 2014 by jan*

**math **

A boat travels 23 mph relative to the riverbank while going downstream and only 11 mph returning upstream. What is the boat's speed in still water?
*November 21, 2014 by gisela*

**algebra**

A boy can row 18km. downstream and return a distance of 16 km/hr upstream in 5hrs. If the rate of the current is 6km/hr, What is the boy's rate of rowing in still water?
*September 13, 2015 by dan*

**algebra**

A boy can row 18km. downstream and return a distance of 16 km. upstream in 5hrs. If the rate of the current is 6km/hr, What is the boy's rate of rowing in still water?
*September 13, 2015 by dan*

**swim**

A swimmer is capable of swimming 1.00 m/s in still water. If she aims her body directly across a 150-m-wide river whose current is 0.80 m/s, how far downstream (from a point opposite her starting point) will she land?
*January 26, 2010 by Anonymous*

**physics**

A swimmer is capable of swimming 0.95 m/s in still water. (a) If she aims her body directly across a 150-m-wide river whose current is 0.65 m/s, how far downstream (from a point opposite her starting point) will she land?
*September 20, 2012 by jeje*

**maths**

The speed of a boat in still water is 8km/h. It travels upstream for a distance of 1.5km and returns(downstream) to the starting point. If the whole trip takes 2/5 hours, find the speed of the stream flow.
*July 15, 2014 by yeung *

**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?
*August 30, 2010 by anj*

**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?
*November 3, 2010 by Dusty*

**Physical Science**

Trying to figure this out and can't: The elevation of a streambed is surveyed near a bridge to be 2,367m. At another bridge 12.2km downstream the elevation is 2,232m. What is the gradient of this stream?
*April 21, 2012 by mel*

**math 0312**

The current in a stream moves at a speed of 9 mph. A boat travels 17 mi upstream and 17 mi downstream in a total time of 13 hrs. What is the speed of the boat in still water?
*May 4, 2015 by Sara *

**Math**

3). Sam rows up a river to camp in three hours. The next day he makes the return trip downstream in one hour. If he can row two mph in still water, how fast is the current?(The question was not answered last time).
*December 13, 2010 by Sherkyra8645*

**linear equations in two variable**

A person going at a rate of 5 km/hr in still water,takes thrice as much time in going 40km upstream as in going downstream. Find the speed of the stream.
*July 2, 2015 by pankaj khanna*

**college physics**

A swimmer is heading straight for the other shore of a river with a velocity of vs=0.7 m/s relative to the water, but is carried away by the current, which has a velocity of vr=0.3 m/s. It takes her 20.3 s to get across. How far downstream does she end up? Can someone please ...
*September 22, 2010 by kim*

**Algebra**

The speed of the current in a stream is 4 mi/hr. It takes a canoeist 96 minutes longer to paddle 13 miles upstream than to paddle the same distance downstream. What is the canoeist's rate in still water?
*September 14, 2014 by Ashton*

**Math**

The speed of the current in a stream is 4 mi/hr. It takes a canoeist 96 minutes longer to paddle 13 miles upstream than to paddle the same distance downstream. What is the canoeist's rate in still water?
*September 15, 2014 by Kyle*

**Intermediate Algebra**

The speed of a boat in still water is 29mph. if the boat travels 140mph downstream in the same time that it takes to travel 92miles upstream, find the speed of the stream.
*December 2, 2012 by Wanda*

**algebra**

Chen's motorgoat took 3 hr to make a treip downstream with a 6-mph current. The return trip against the same current took 5 hr. Find the speed of the boat in still water.
*November 14, 2015 by Anonymous*

**college physics**

A swimmer is heading straight for the other shore of a river with a velocity of vs=0.7 m/s relative to the water, but is carried away by the current, which has a velocity of vr=0.3 m/s. It takes her 20.3 s to get across. How far downstream does she end up? Can someone please ...
*September 20, 2010 by Kelly*

**Uniform Motion**

A certain fish requires 3 hrs to swim 15km downstream. The return trip upstream takes 5 hrs. What is the speed of the fish still in water? How fast is the current of the stream?
*November 24, 2014 by Gela*

**Algebra**

Boat travels 10 mi upstream and 10 mi downstream the stream is moving 1mph and the boat took 5 1/3hrs. What is the speed of boat if the stream still?
*October 28, 2010 by Teresa*

**science**

a boat is traveling with a velocity of 5 km/hr upstream. The river is flowing at a velocity of 2km/hr downstream. What is the velocity of the boat compared to the riverbank? ►
*January 28, 2011 by john*

**math**

A tugboat can go 10 miles upstream in the same time as it can go 15 miles downstream. If the tugboat goes 12 miles per hour in still water, what is the speed of the current?
*October 27, 2010 by Dave*

**Algebra**

Briana can row 4 miles per hour is still water. It takes as long to row 8 miles upstream as 24 miles downstream. How fast is the current?
*January 14, 2014 by Urgent*

**Math**

A speed boat travels at a rate of 20 km per hour in still water. It travels 55 km upstream the same time it travels 90 km downstream. What is the rate of current?
*September 15, 2015 by Sylvia*

**College Chemisty**

The pH of water collected in a stormwater run-off downstream from a Union Carbide chemical factory is 4.82. Calculate the H+ ion concentration of rainwater. The problem may start with: pH= -log H+ = 4.82. The answer is 1.5x10 power -5. Again, Can you please show steps for maths.
*October 22, 2010 by Elleni*

**Math**

Boat travels 10 mi upstream and 10 mi downstream the stream is moving 1mph and the boat took 5 1/3hrs. What is the speed of boat if the stream still? I need help ASAP!!!! PLEASE!!!
*October 28, 2010 by Teresa*

**Physics**

if the water in the river moves downstream at 4mi/hr heading the boat straight across the river, what direction will the boat move relative to the shore? i dont want the answer... i want someone to explain. i wanna learn
*October 16, 2013 by Carlos*

**Math**

Steve's boat will go 14 miles per hour in still water. If he can go 13 miles downstream in the same amount of time as it takes to go 10 miles upstream, then what is the speed of the current? (Please round your answer to one decimal place.)
*July 24, 2012 by Josh*

**physics**

Noah wants to swim across a river 10 m wide, flowing from north to south. He swims so his velocity with respect to the river is 2 m/s due east, and the river moves at 4 m/s. How far downstream in m from his starting point will he reach the other side?
*June 22, 2013 by raja harishchandra*

**physics**

Noah wants to swim across a river 10 m wide, flowing from north to south. He swims so his velocity with respect to the river is 2 m/s due east, and the river moves at 4 m/s. How far downstream in m from his starting point will he reach the other side?
*June 22, 2013 by raja harishchandra*

**MATH 12U**

Mary leaves a dock paddling her canoe at 3m/s. She heads downstreamat an angle of 30 degrees to the current which is flowing at 4 m/s. a) How far downstream does Mary travel in 10s? b) What is the length of time required to cross the river ifits width is 150 m?
*February 24, 2011 by Kevinn*

**math**

A boat traveling downstream a distance of 39 miles then came right back.If the speed of the current was 12 mph and the total trip took 4 hours 20 minutes,find the average speed of the boat relative to the water.
*February 1, 2014 by russ*

**PHYSICS!!!**

A boat moves at 7.00m/s relative to the water. (You can neglect relativity at these slow speeds.) The boat travels 100 m downstream and then 100 m upstream, returning to its original point. Find the time for the round trip
*April 3, 2014 by Amy*

**physics**

a crew member is walking on a tugboat that is pulling a barge. the tugboat is moving at a constant speed upstream in a river that has a constant downstream current. In the situation above, what is at rest relative to the tugboat?
*February 2, 2014 by judy*

**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
*June 1, 2008 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
*September 5, 2010 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
*September 5, 2010 by sara*

**Math Word Problem**

Steve's boat will go 14 miles per hour in still water. If he can go 13 miles downstream in the same amount of time as it takes to go 10 miles upstream, then what is the speed of the current? (Please round your answer to one decimal place.)
*July 24, 2012 by Lisa L*

**math**

what kind of question is this? Rowing 5 times the speed of current, jacob's team can travel 24 km downstream and at the sametime 16 km upstream. What is jacob's team rate and the rate of the water?
*September 9, 2007 by ryan*

**UnKnown**

Traveling upstream on the Mississippi River, a barge travels 56 mi in 7h. Downstream, it travels the same distance in 4h. Find the rate of the barge in still water and the rate of the current.
*August 17, 2008 by Taylor*

**algebra**

the current in a stream moves at a speed of 2 mph. A boat travels 8mi upstream and 8mi downstream in a total time of 7 hr. What is the speed of the boat in still water
*March 22, 2011 by Anonymous*

**math**

The speed of a stream is 6 mph. If a boat travels 52 miles downstream in the same time that it takes to travel 26 miles upstream, what is the speed of the boat in still water?
*July 22, 2012 by john*

**math**

A boat takes 90 minutes less to travel 36 km downstream then to travel the same distance upstream.If the speed of the boat in still water is 10 kmph.What is the speed of the current?
*June 21, 2014 by sangita*

**algbra**

a paddle boat can move at a speed of 14 km/h in still water. the boat is paddled 16 km downstream in a river in the same time it takes to go 8km upstream. what is the speed of the river?
*October 31, 2014 by Anonymous*

**Math**

A tour boat on a river traveled 40 miles downstream in 4 hours. The return trip against the current took 5 hours. What was the rate of the current? A. 2.0 MPH B. 1.5 MPH
*February 3, 2015 by Tia*

**math**

it took 3 hours for patrol boat to travel 48km upstream and 2 hours to travel downstream. What is the current and boat speed.
*October 2, 2010 by alex*

**algebra**

The time it takes you to go 12 miles upstream is 5/4 the time it takes you to go 14 miles downstream. If the current is 3mph, how fast do you go in still water.
*February 25, 2012 by Devin*

**algebra**

In a canoe race, a team paddles downstream 480 m. in 60 s. The same team travels up stream in 80 s. Find the team's rate in still water and the rate of the current. Please show how the equation is set up to solve
*May 26, 2012 by chris*

**physics 11**

A swimmer swims perpendicular to the bank of a 20.0 m wide river at a velocity of 1.3 m/s. Suppose the river has a current of 2.7 m/s [W]. (a) How long does it take the swimmer to reach the other shore? (b) How far downstream does the swimmer land from his intended location?
*October 20, 2015 by eric*

**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.
*January 17, 2009 by Angie*

**Algebra**

Cody’s motorboat took 3 hr to make a trip downstream with a 6-mph current. The return trip against the same current took 5 hr. Find the speed of the boat in still water
*February 22, 2011 by Joel*

**Algebra**

A riverboat cruise line has a boat that can travel 76 mi downstream in the same time that it takes to travel 52 mi upstream. The speed of the current in the river is 1.5 mph. Find the speed of the boat in still water.
*March 7, 2011 by Paula*

**math 116**

A Coast-Guard patrol boat travels 4 hr on a trip downstream with a 6-mph current. The return trip against the same current takes 5 hr. Find the speed of the boat in still water
*March 3, 2009 by Meshelle*

**Algebra**

A boy can row a boat at a constant rate of 5 mi/hr in still water. He rows upstream for 19 minutes and then rows downstream, returning to his starting point in another 13 minutes. What is the rate of the current? What is the total distance traveled?
*September 12, 2011 by Kaley*

**physics**

Hey thanks for the help: I have another question: A swimmer is capable of swimming 0.30 m/s in still water. (a) If she aims her body directly across a 75 m-wide river whose current is 0.55 m/s, how far downstream (from a point opposite her starting point) will she land? (b) ...
*October 6, 2008 by H.Pales*

**projectile motion**

You have a boat with a motor that propels it at vboat = 4.5 m/s relative to the water. You point it directly across the river and find that when you reach the other side, you have traveled a total distance of 27 m (indicated by the dotted line in the diagram) and wound up 14 m...
*November 14, 2010 by leila*

**Algebra**

The current of a river moves at 3 miles per hour. It takes a boat 3 hours to travel 12 miles upstream, against the current, and return the same distance traveling downstream, with the current. What is the boats rate in still water?
*February 23, 2015 by Ann*

**algebra/ word problem**

Justin paddles his kayak 6 miles upstream in 1,5 hours. he turns around and paddles downstream, the same distance, in only 1 hour. What is the rate in still water and what is the rate of the water's current
*January 9, 2013 by lulu*

**Math! Algebra 1! **

A boat is traveling in a river with a current that has a speed of 1.5 km/h. In one hour, the boat can travel twice the distance downstream as it can travel upstream. How long will it take the boat to travel 100 km in still water?
*November 10, 2014 by Dede*

**algebra**

how do I solve this and show the work: a motorboat went upstream at 15 miles per hour and returned downstream at 20 miles per hour. How far did the boat travel one way if the round trip took 3.5 hours?
*May 29, 2013 by jessica*

**Algebra**

I am having a hard time with this question. A boat went 15 miles downstream in 1 hour and then returned upstream to its dock in 5/3 hours. if the current of the stream was constant, find the speed of the boat in still water and the speed of the current
*October 27, 2015 by Marina*

**math**

a man can row a bangka at a rate of 5 km/h in still water. It takes 10 minutes longer to row upstream a distance of 2km than he takes to row downstream. What is the rate of the current?
*November 25, 2013 by alice*

**algebra**

joe is planning a 5 hour canoe trip. he can paddle 4 miles per hour in still water and the current is 3 miles per hour. how far downstream can he go?
*December 15, 2014 by jp*

**math**

1.)The difference of two natural number is 6, and the diffrence of their reciprocals is 1/36. Find the two numbers. 2.)In a river, ben found out that he could go 16miles downstream and then 4miles back upstream in a total of 48mins. What was the speed of Ben's boat if the ...
*October 10, 2015 by Ange Ords*

**Math**

A boat travels 45 miles upstream in 5h. The boat travels the same distance downstream in 3hr. What is the rate of the boat in still water? What is the rate of the current? (thank you)
*March 15, 2012 by Analica*

**science**

I have to design a sustainable city with a river running through it. Would I put both my water treatment plant and seweage plant on the river. Water up and sewer plant downstream?
*November 12, 2007 by mike*

**algebra-NOW PLEASE**

A boat is traveling in a river with a current that has a speed of 1.5 km/h. In one hour, the boat can travel twice the distance downstream as it can travel upstream. What is the boat's speed in still water?
*December 4, 2012 by Alex*

**physics**

A swimmer can swim in still water at a speed of 9.47 m/s. He intends to swim directly across a river that has a downstream current of 4.24 m/s. a) How many degrees from straight across the river should he head? Let upstream be a positive angle. Answer in units of ◦
*October 21, 2014 by a*

**Physics**

Diane rows a boat at 8.3 m/s directly across a river that flows at 5.6 m/s. (a) What is the resultant speed of the boat? m/s (b) If the stream is 250 m wide, how long will it take Diane to row across? s (c) How far downstream will Diane be
*October 4, 2011 by Eddie*

**physics**

your boat departs from the bank of a river that has a swift current parallel to its banks. if you want to cross the river in the shortest amount of time, you should direct your boat a.) perpendicular to the current b.) upstream c.) downstream d.) so that it drifts with the ...
*March 8, 2008 by stu*

**Physics I**

A person is attempting to swim directly across a river. They are able to swim at a speed of 0.500 m/s relative to the water. The river is 25.0 m wide and the person ends up 50.0 m downstream from their starting point. How fast is the current in the river?
*September 14, 2010 by Dazed and Confused*

**physics**

A Nile cruise ship takes 21.7 h to go upstream from Luxor to Aswan, a distance of 208 km, and 19.4 h to make the return trip downstream. Assuming the ship's speed relative to the water is the same in both cases, calculate the speed of the current in the Nile.
*October 4, 2007 by stephanie*

**Physics**

A Nile cruise ship takes 21.7 h to go upstream from Luxor to Aswan, a distance of 208 km, and 20.3 h to make the return trip downstream. Assuming the ship's speed relative to the water is the same in both cases, calculate the speed of the current in the Nile.
*September 10, 2014 by Shannon*

**Algebra**

A boat can travel upstream 14 miles in same it can travel downstream 8 miles. the boat is traveling 13 miles per hour. what is the current
*June 1, 2008 by Kim*

**physics**

Kym is in a boat traveling 3.8 m/s straight across a river 240 m wide. The river is flowing at 1.6 m/s. a) What is Kym’s resultant velocity? - b) How long does it take Kym to cross the river? - c) How far is Kym downstream when she reaches the other side? -
*November 11, 2009 by sarah*

**Math**

Julie and Eric row their boat (at a constant speed) 21 miles downstream for 3 hours, helped by the current. Rowing at the same rate, the trip back against the current takes 7 hours. Find the rate of the current.
*October 26, 2011 by Hollana*

**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 ...
*February 16, 2011 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 ...
*February 18, 2011 by Anonymous*

**Math**

How do you set this up? Solve the system using substitution: A boat travels 18 miles downstream in 1.5 hrs. It then takes the boat 3 hrs. to travel upstream the same distance. Find the speed of the boat in still water and the speed of the current. Thanks you!!!
*December 6, 2012 by Erin*

**math**

A boat cruises downstream for 2 hours before heading back. It takes 3.5 hours going upstream to get back. If the speed of the stream is 8 mph, what is the speed of the boat in still water?:
*September 22, 2007 by --*

**MAT 116**

A tugboat goes 180 miles upstream in 10 hours. The return trip downstream takes 5 hours. Find the speed of the tugboat without a current and the speed of the current.
*November 11, 2012 by Samantha*

**algebra**

It takes Nemo 2 hours more to swim 15 miles upstream than to go back downstream. If it takes Nemo to swim at 4 miles per hour in still water, what's the rate of the current?
*September 14, 2015 by Nica*

**algebra**

a tugboat goes 160 miles upstream in 20 hours. The return trip downstream takes 10 hours. Find the speed of the tugboat without a current and the speed of the current.
*June 10, 2012 by Math Girl*

**math**

A tugboat goes upstream 120 miles in 20 hours. The return trip downstream takes 10 hours. Find the speed of the tugboat without the current and the speed of the current.
*August 1, 2012 by Lori*