Saturday

April 30, 2016
Number of results: 12,218

**Physics**

An airplane flies due north at 260 km/h with respect to the air. There is a wind blowing at 60 km/h to the northeast with respect to the ground. What are the plane's speed and direction with respect to the ground?
*October 25, 2012 by Maddie*

**physic**

An airplane flies due north at 200 km/h relative to the air. There is a wind blowing at 70 km/h to the northeast relative to the ground. What are the plane's speed and direction relative to the ground?
*December 5, 2012 by BILLY*

**Geom./Trig.**

an airplane flies directly overhead at 540mph. 1 minute later is seen at an angle of elevation of 34 degrees. how far did the airplane fly during that time? what is the elevation of the plane?
*March 28, 2012 by Emma*

**Physics**

HELP!!! Consider an airplane with a total wing surface of 140 . At a certain speed the difference in air pressure below and above the wings is 3.0 of atmospheric pressure.Find the lift of the airplane
*April 9, 2013 by Ericca*

**trig**

an airplane leaves the airport and flies due west 150 miles and then 240 miles in the direction 200°40'. Assuming the earth is flat, how far is the plane from the airport at this time( to the nearest mile)?
*March 26, 2010 by kat*

**Math**

An airplane leaves the airport and flies due west 170 miles and then 240 miles in the direction 200°30'. Assuming the earth is flat, how far is the plane from the airport at this time( to the nearest mile)?
*February 14, 2012 by Joe*

**math**

An airplane travels with a speed of 145 mph in calm air. the wind is blowing with a velocity of 23 mph from N72degreesE. If the plane is headed in a direction N63W, find the magnitude of the speed and the direction of the airplane with reference to the ground. In what ...
*February 24, 2015 by Dan*

**Calculus & Vectors**

A search and rescue aircraft, travelling at a speed of 240 km/h starts out at a heading of N 20 degrees West. After travelling for 1h and 15 min, it turns to a heading of N 80 degrees E and continues for another two hours before returning to base. Find the total distance the ...
*February 1, 2014 by Sara*

**Algebra 3 and trig**

An ocean liner is 177 miles due west of lighthouse A. Lighthouse B is 265 miles due south of lighthouse A. Find the distance from lighthouse B to the liner and the bearing of the ocean liner from lighthouse B.
*June 12, 2013 by Lauren *

**Constitution**

Article I, Section 6 of the Constitution is often referred to as: A. the Due Process Clause. B. the Interstate Commerce Clause. C. Due Diligence Clause. D. the Freedom from Arrest Clause. im confused between A and B 2. What case invalidated an earlier effort by Congress to ...
*January 17, 2015 by Amy*

**phsyics**

A 8.0×10−2-{\rm kg} toy airplane is tied to the ceiling with a string. When the airplane's motor is started, it moves with a constant speed of 1.30 m/s in a horizontal circle of radius 0.41 m, Find the angle the string makes with the vertical.
*December 16, 2010 by Lisa*

**Physics**

An airplane cruises at 880km/h relative to the air. It is flying from Denver, Colorado due west to Reno, Neveda, a distance of 1200km and will then return. There is a steady 90km/h wind blowing to the east. What is the difference in flight time between the two legs of the trip?
*January 28, 2015 by Skyler*

**physics**

An airplane of mass 1.30 104 kg is moving at 52.0 m/s. The pilot then increases the engine's thrust to 7.00 104 N. The resistive force exerted by air on the airplane has a magnitude of 3.00 104 N.
*November 24, 2014 by kc*

**Math/Trig**

An airplane leaves an airport and flies due west 150 miles and then 170 miles in the direction 210°50'. Assuming the Earth is flat, how far is the plane from the airport at this time (to the nearest mile)
*September 27, 2012 by Jackie*

**Physics**

A model airplane is flying in a horizontal circle with a constant speed. The initial radius of the circle is R. The boy holding the cord to which the airplane is attached, then decides to increase the length of the cord so that the radius of the circle increases to 2R. The ...
*June 8, 2014 by Sam*

**Physics**

A model airplane is flying in a horizontal circle with a constant speed. The initial radius of the circle is R. The boy holding the cord to which the airplane is attached, then decides to increase the length of the cord so that the radius of the circle increases to 2R. The ...
*June 8, 2014 by Sam*

**Geometery**

A, B, C and D are on horizontal level ground and CT is vertical pole. B is 35 m due east of C, A is 60 m South of C and D is 60 m West of A. Calculate the angle of elevation of T from N. I m really suck...plz help
*February 22, 2015 by Bob*

**Physics**

An airplane is flying in a horizontal circle at a speed of 106 m/s. The 81.0 kg pilot does not want the centripetal acceleration to exceed 6.16 times free-fall acceleration. Find the minimum radius of the plane’s path. The acceleration due to gravity is 9.81 m/s2. Answer in ...
*November 13, 2012 by Kyla*

**Physics**

An airplane is flying in a horizontal circle at a speed of 104 m/s. The 73.0 kg pilot does not want the centripetal acceleration to exceed 6.98 times free-fall acceleration. Find the minimum radius of the plane’s path. The acceleration due to gravity is 9.81 m/s2. Answer in ...
*March 5, 2013 by Anonymous*

**trig**

A plane is flying with an airspeed of 150 miles per hour and heading 155°. The wind currents are running at 25 miles per hour at 160° clockwise from due north. Use vectors to find the true course and ground speed of the plane.
*November 16, 2012 by janice*

**Calculus**

The drag on an airplane traveling at velocity v is D=av^2+(b/v^2) where a and b are positive constants. At what speed does the airplane experience the least drag. I have so far that D'=-2b/v^3 do i set this equal to zero then i get 0=-2 dont think that is the right way where ...
*September 26, 2012 by kieran*

**physics**

A man walks 10km due south. The displacement of the man from the initial position is
*January 22, 2014 by etieno*

**Math**

A plane leaves an airport X, 20.6degrees east and 36.8 north degrees and flies due south along the same longitude for 8 hours at the rate of 1000km/h to another airport Y, 20.6degrees east and tita degree south. The plane then flies west to another airport Z for 8hours at the ...
*November 1, 2014 by Anonymous*

**Resultant Force?**

a force F1 of 35 newtons pulls at an angle of 15 degrees notrth of due east. A force F2 of 75 newtons pulls at an angle of 55 degrees west of due south. Find the magntiude and direction of the resultant force. Please help me - I have no idea what to do or even where to start!
*April 23, 2012 by Tabby*

**Physics**

A car makes a trip due north for three-fourths of the time and due south one-fourth of the time. The average northward velocity has a magnitude of 25 m/s, and the average southward velocity has a magnitude of 32 m/s. Taking northward to be the positive direction, what is the ...
*September 16, 2014 by Dakkota*

**Physics**

please show me how to solve this 1. A bus travels 280 km south along a straight path with an average velocity of 88 km/h to the south. the bus stops for 24 min. then, it travels 210 km south with an average velocity of 75 km/h to the south a. how long does the total trip last...
*January 30, 2009 by y912f*

**Social studies**

1. what post war industry became more important in south carolina due to new roads? a. tourism* b. agriculture c. manufacturing d. mining
*April 30, 2014 by what*

**Physics**

A flock of geese is attempting to migrate due south, but the wind is blowing from the west at 5.4 m/s . If the birds can fly at 7.9 m/s relative to the air, what direction should they head?
*April 8, 2016 by Megan*

**Physics**

A flight controller determines that an airplane is 20.0 south of him. Half an hour later, the same plane is 46.0 northwest of him. If the plane is flying with constant velocity, what is the direction of its velocity during this time? What is the magnitude of its velocity ...
*May 23, 2013 by Anonymous*

**physics**

a car driving down a road due south at a constant speed of 55 mph. what is the car's acceleration? how do you know
*May 28, 2013 by Anonymous*

**physics**

A river flows due east at 1.65 m/s. A boat crosses the river from the south shore to the north shore by maintaining a constant velocity of 10.7 m/s due north relative to the water. What is the velocity of the boat relative to shore?
*January 29, 2014 by Tsion*

**Physics**

A river flows due east at 1.54 m/s. A boat crosses the river from the south shore to the north shore by maintaining a constant velocity of 11.2 m/s due north relative to the water. What is the velocity of the boat relative to shore?
*February 4, 2016 by Carrie*

**English check**

1.)Supported the ideas of plainness, divine mission, and grace =a.)The North--Puritanism b.)The South---Gentlemen Planters c.)Both 2.Came to America to find freedom to worship and the Promised Land =a.)The North--Puritanism b.)The South---Gentlemen Planters c.)Both 3.Believed ...
*August 24, 2010 by Ariel*

**English**

1. When is the due date of the report? It is on May 1st. 2. When is the deadline of the book? It is tomorrow. 3. When is the report due? It is due this morning. 4. When is the book due? It is due this Thursday. (Are the questions and answers all correct? Are the questions the ...
*April 16, 2010 by rfvv*

**Physics**

An airplane is ﬂying in a horizontal circle at a speed of 104 m/s. The 88.0 kg pilot does not want the centripetal acceleration to exceed 6.15 times free-fall acceleration. Find the minimum radius of the plane’s path. The acceleration due to gravity is 9.81m/s2. Answer ...
*February 8, 2013 by Dave*

**maths**

a man goes 5m west and then 12m due south.Find the the distance of the man frm the starting point
*September 30, 2015 by faris*

**Physics**

A jet airplane has an intensity of 109.7 W/ m2 when heard at a distance of 26.8 m. What is the maximum sound intensity heard by a person on the ground when the airplane is 8500 m overhead?
*November 22, 2010 by Jill*

**calculus**

An airplane is flying on a bearing of 80 degrees at 540mph. A wind is blowing with a bearing of 100 degrees at 55mph. Find the component form of the velocity of the airplane.
*February 7, 2010 by Kelly*

**Physics**

A truck travels beneath an airplane that is moving 120 km/h at an angle of 24◦ to the ground. How fast must the truck travel to stay beneath the airplane?
*October 9, 2011 by Louis*

**physics**

you and a flight attendant toss a ball back and forth in an airplane in flight. Does the kinetic energy of the ball depend on the speed of the airplane? Defend you answer.
*November 29, 2013 by princess*

**physics**

you and a flight attendant toss a ball back and forth in an airplane in flight. Does the kinetic energy of the ball depend on the speed of the airplane? Defend you answer.
*November 29, 2013 by princess*

**physics**

a truck beneath an airplane that is moving 180 km/h at an angle of 47 to the ground. How fast must the truck travelto stay beneath the airplane? Answer in units of km/h.
*October 28, 2015 by chris*

**Pre-Cal**

Two airplanes take off from an airport at the same time. One travels on a heading of 45 at 420 mph and the other on a heading of 150 at 400 mph. After two hours, how far apart are the airplanes? A.650.66 miles B.1,160 miles C.1,301 miles
*March 17, 2012 by Adrianna*

**Physics**

a ship is heading due north at 7.50 m/s relative to the water. The local current is 1.52 m/s in a direction 42 degree west of north. Find its velocity relative to earth( find both direction and magnitude of the velocity)
*December 19, 2012 by Hep*

**Math**

An airplane rises vertically 1000 feet over a horizontal distance of 1 mile. What is the angle of elevation of the airplane's path? (hint: 1 mile = 5280 feet)
*April 18, 2011 by Barnie*

**math**

An airplane rises vertically 1000 feet over a horizontal distance of 1 mile. What is the angle of elevation of the airplane's path? (hint: 1 mile = 5280 feet)
*April 18, 2011 by ashely*

**math**

An airplane rises vertically 1000 feet over a horizontal distance of 1 mile. What is the angle of elevation of the airplane's path? (hint: 1 mile = 5280 feet)
*April 18, 2011 by ashely*

**math**

An airplane rises vertically 1000 feet over a horizontal distance of 1 mile. What is the angle of elevation of the airplane's path? (hint: 1 mile = 5280 feet)
*April 18, 2011 by ashely*

**Math**

An airplane rises vertically 1000 feet over a horizontal distance of 1 mile. What is the angle of elevation of the airplane's path? (hint: 1 mile = 5280 feet)
*April 18, 2011 by ashely*

**Physics**

a 15000 kg airplane descends a vertical distance of 10.0 km over a horizontal distance of 80.0 km. What is the airplane's loss of potential energy. (I'm confused about the height) Ep=mgh m= 15000 kg g= 9.81 m/s^2 h=??
*December 27, 2014 by Anonymous*

**Physics**

A jet airplane has an intensity of 92.4 W/ m2 when heard at a distance of 21.2 m. What is the maximum sound intensity heard by a person on the ground when the airplane is 10700 m overhead?
*November 22, 2010 by Bella*

**Physics**

A jet airplane has an intensity of 92.4 W/ m2 when heard at a distance of 21.2 m. What is the maximum sound intensity heard by a person on the ground when the airplane is 10700 m overhead?
*November 22, 2010 by Bella*

**physics**

An airplane with a mass of 1.2 x 10^4 kg tows a glider with a mass of .60 x 10^4 kg. If the airplane propellers provide a net forward thrust of 3.6 x10^4 N, what is the acceleration of the glider?
*May 18, 2012 by Anonymous*

**Physics**

An airplane is flying with an air velocity of 850 km/h at 34 degrees n of e. The wind is blowing at 100 km/h at 20 degrees s of e. Find the ground velocity of the airplane.
*September 26, 2012 by Taylor*

**Physics**

An airplane has a velocity of v=(5m/s)i + (4m/s)j at t1= 3s. For the time interval from t1=3 seconds to t2=13s the average acceleration is a= (.5m/s^2)i + (.2m/s^2)j. At 13s find the magnitude and direction of the velocity of the airplane.
*March 13, 2016 by Bobby*

**Physics**

An airplane has a velocity of v=(5m/s)i + (4m/s)j at t1= 3s. For the time interval from t1=3 seconds to t2=13s the average acceleration is a= (.5m/s^2)i + (.2m/s^2)j. At 13s find the magnitude and direction of the velocity of the airplane.
*March 13, 2016 by Bobby*

**Geography**

Which continent extends farther south, Australia or South America? South america
*October 4, 2006 by Ian*

**maths ib**

the angle of elevation of the top of tower from a point A due south of it is 68 degrees .From a point B due east of A the angle of elevation of the top is 54 degrees.If A is 50 m from B find the height of the tower.
*April 11, 2015 by chetna*

**phys**

An airplane must reach a speed of 185 mi/h to take off. If the runway is 500 m long, what is the minimum value of the acceleration that will allow the airplane to take off successfully?
*January 30, 2011 by Lisa*

**Physics**

A truck travels beneath an airplane that is moving 140 Km/h at an angle of 15 degree to the ground. How fast must the truck travel to stay beneath the airplane? Answer in units of Km/h.
*October 12, 2015 by Luma*

**Physics**

The captain of a boat wants to travel directly across a river that flows due east with a speed of 1.09 m/s. He starts from the south bank of the river and wants to reach the north bank by travelling straight across the river. The boat has a speed of 6.44 m/s with respect to ...
*January 27, 2015 by Chris*

**Trig**

You and a friend are rowing a boat 8.5 KPH heading north. A cross current is moving 3.2 KPH at an angle of 38 degrees north of the west direction. How fast are you actually moving and what direction are you actually heading?
*May 27, 2014 by Kim*

**Physics - Momentum of cars at intersection**

Two cars of identical mass are approaching the same intersection, one from the south and the one from the west. They reach the intersection at the same time and collide. The cars lock together and move away at an angle of 22deg counterclockwise from the road; heading east. ...
*September 1, 2010 by Shaila*

**scale factors**

The model of airplane has a wings[an of20 inches. The model scale of 1 inch = 3.5 feet. what is the wingspan of the actual airplane.
*November 19, 2015 by Anonymous*

**Socials - World War I**

Hey, could someone please give me some documentary links telling about the world war I? The teacher also showed us this documentary in class, and I was trying to look for it, but I cant find, I think it was called Canada in World War I. And I had some questions related to it. ...
*October 19, 2011 by Mysterious*

**Physics**

A boat is headed due east (0) at 20 km/hr. A wind blowing to the south west at 18 km/hr is also acting upon it. What is the boat's velocity?
*September 26, 2011 by Michael*

**Need Help Physics**

The captain of a boat wants to travel directly across a river that flows due east with a speed of 1.09 m/s. He starts from the south bank of the river and wants to reach the north bank by travelling straight across the river. The boat has a speed of 6.44 m/s with respect to ...
*January 29, 2015 by Anonymous*

**english**

4. Which of the following sentences contains “passive voice?” (Points : 1) The airplane was wrecked by the wind. The wind wrecked the airplane. The cat chased the mouse. The bird flew after the balloon. a, b, c
*October 24, 2010 by cc*

**Physics**

An airplane must reach a speed of 240.5 mi/h in order to take off. If the runway is 571.5 m long, what is the minimum value of the acceleration that will allow the airplane to take off successfully?
*September 10, 2011 by Anon14*

**Physics**

An airplane flies clockwise around an airport control tower at a speed of 190 m/s. If that control tower is 8 km from the airplane at all times, what is the plane’s angular velocity (magnitude and direction)?
*October 6, 2014 by M*

**Precalculus**

An airplane flies 180 miles from point A in the direction 135° and then travels in the direction 240° for 90 miles. Approximately how far is the airplane from A? (Round your answer to the nearest whole number.)
*October 25, 2014 by Anonymous*

**Science**

An airplane is traveling 725 m/s at 48.8° degrees north of west when a wind starts to blow. The velocity of the wind is 106.7 m/s and it is blowing 21.8° east of north. What is the speed of the airplane relative to the ground?
*December 2, 2015 by Ron*

**MAth Igcse**

The angle of elevation of the top of a tower is 27 degrees from point A due east of it. The angle of elevation of the top of the tower is 11 degrees from another point B due south of the tower. Find the height of the tower if the distance AB is 40m.
*January 15, 2015 by Choi*

**MAth Igcse**

The angle of elevation of the top of a tower is 27 degrees from point A due east of it. The angle of elevation of the top of the tower is 11 degrees from another point B due south of the tower. Find the height of the tower if the distance AB is 40m.
*January 15, 2015 by Choi*

**physics**

Betty Bodycheck (mB = 50 kg, vB = 22.0 km/h in the positive x-direction) and Sally Slasher (mS = 45.2 kg, vS = 28.0 km/h in the positive y-direction) are both racing to get to a hockey puck. Immediately after the collision, Betty is heading in a direction that is 76.0° ...
*February 10, 2012 by sara*

**physics**

Betty Bodycheck (mB = 60.0 kg, vB = 22.0 km/h in the positive x-direction) and Sally Slasher (mS = 46.3 kg, vS = 28.0 km/h in the positive y-direction) are both racing to get to a hockey puck. Immediately after the collision, Betty is heading in a direction that is 76.0° ...
*October 7, 2012 by raven*

**physics**

an airplane was moving with a velocity equal to 150 mph when the velocity was increased with uniform acceleration to 300 mph in 5 min. Calculate the number of miles the airplane traveled during that interval
*June 21, 2013 by Jen*

**pre calculus**

A airplane is 145 miles North and 85 miles west of an airport. What is the compass direction from the airport to the airplane?
*December 10, 2012 by Karen*

**Physics**

Betty Bodycheck (mB = 60.0 kg, vB = 22.0 km/h in the positive x-direction) and Sally Slasher (mS = 46.3 kg, vS = 28.0 km/h in the positive y-direction) are both racing to get to a hockey puck. Immediately after the collision, Betty is heading in a direction that is 76.0° ...
*October 7, 2012 by raven*

**math**

Find the resultant ir the sum of the displacement (1) 10m north west (2) 20m.30degree north of east (3) 35m due south
*April 26, 2016 by Rosemary*

**physics**

Betty Bodycheck (mB = 50.2 kg, vB = 22.0 km/h in the positive x-direction) and Sally Slasher (mS = 45.2 kg, vS = 28.0 km/h in the positive y-direction) are both racing to get to a hockey puck. Immediately after the collision, Betty is heading in a direction that is 76.0° ...
*February 10, 2012 by sara*

**physics**

Consider a level flight turn of a propeller-driven airplane in which the airplane makes a complete circular turn in 1.6 min. If the plane's speed is 180 m/s, what is the radius of the circle? 1 m What is the centripetal acceleration of the plane? 2 m/s2
*December 8, 2010 by beth*

**physics**

An airplane is flying horizontally with a speed of 1000 km/hr (278 m/s) when it drops a payload. The payload hits the ground 37 s later. (Neglect air drag and the curvature of the Earth. Take g = 10 m/s2.) (a) At what altitude H is the airplane flying?
*March 4, 2011 by kelly*

**engineering**

an airplane was moving with a velocity equal to 300 mph when the velocity was increased with uniform acceleration to 600 mph in 5 min. calculate the number of miles the airplane traveled during that interval of time
*January 29, 2012 by Anonymous*

**Physics**

An airplane flies 200 km due west from city A to city B and then 345 km in the direction of 32.0° north of west from city B to city C In straight-line distance, how far is city C from city A?
*September 14, 2010 by Lisa*

**physics**

An airplane flies 200 km due west from city A to city B and then 245 km in the direction of 36.0° north of west from city B to city C. (a) In straight-line distance, how far is city C from city A?
*April 14, 2011 by Anonymous*

**physics**

An airplane flies 200 km due west from city A to city B and then 245 km in the direction of 31.5° north of west from city B to city C. (a) In straight-line distance, how far is city C from city A?
*April 19, 2011 by diamond*

**physics**

A river flows due east at 1.91m/s.A boat crosses the river from the south shore to the north shore by maintaining a constant velocity of 10.3m/s due north relative to the water. A.What is the velocity of the boat relative to shore? How far downstream has the boat moved by the ...
*October 4, 2010 by dillon*

**Physics**

A roller coaster cart travelling due north at 20m/s that turns left during an interval of 4.0s without changing speed. Find the average acceleration. I understand the mathematics behind it (using pythagoras's theorem to find velocity and the formula acceleration = velocity/...
*March 17, 2013 by Annie*

**Physics HELP!**

An airplane flies due north at 240 km/h with respect to the air. There is a wind blowing at 75 km/h to the northeast with respect to the ground. What are the plane's speed and direction with respect to the ground? __?__km/h __?__° east of north
*October 25, 2012 by Anna*

**ap physics**

A golfer sees the green (where the hole is) at a distance of 120.0 m at heading 75.0° north of west. She also sees her teammate at a distance of 60.0 m and heading 15.0° north of east. What distance and direction would her teammate have to land the ball to hit the green?
*June 20, 2014 by iz*

**trig**

A barge is pulled by two tugboats. The first tugboat is traveling at a speed of 16 knots with heading 135°, and the second tugboat is traveling at a speed of 15 knots with heading 195°. Find the resulting speed and direction of the barge. (Round your answers to the nearest ...
*November 16, 2012 by janice*

**social studies check answers**

2.B 3.A 4.C 5.B 2.Caribbean South America has A. a predominantly tropical climate. B. varied climate zones due to coastal and highland areas. C. an arid climate in the north and a wet climate in the south. D. mountain climates determined by elevation. 3.Which statement best ...
*April 16, 2014 by matt*

**Calculus**

A pilot wishes to reach an airport 350 Km due east from his present position. The wind is blowing from N25degreesE with a speed of 80 Km/h and the planes airspeed is 400 Km/h. What ground speed and what heading should the pilot steer to reach the airport? How many minutes will...
*May 4, 2010 by Ariza*

**social studies { somebody please help me please **

What countries were members of the central powers in WW1? A. Austria-Hungary, Germany, Turkey*** B. France, , Germany, Russia C. France, Great-Britain, Russia D. Great-Britain, United States, Turkey 2. What caused the U.S to enter WW1 after 3years of neutrality? A. Germans ...
*April 5, 2016 by UNKNOWN*

**Physics ASAP**

A proton, traveling with a velocity of 6.8 × 106 m/s due east, experiences a magnetic force that has a maximum magnitude of 8.6 × 10-14 N and direction of due south. What are the magnitude and direction of the magnetic field causing the force? If the field is up, then enter a ...
*August 3, 2014 by Luke*

**physics-please help**

A proton, traveling with a velocity of 6.8 × 106 m/s due east, experiences a magnetic force that has a maximum magnitude of 8.6 × 10-14 N and direction of due south. What are the magnitude and direction of the magnetic field causing the force? If the field is up, then enter a ...
*August 4, 2014 by Sara*

**math**

1)An object is suspended from two points on the ceiling 25cm apart by two pieces of rope of lengths 27cm and 24 if the object exerts from a downward force 200N then find the tension in each rope 2)An airplane heading north at 550km/h encounters a wind of 175km/h from 32 ...
*September 17, 2011 by Abraham*

**math**

after take off an airplane is flying at a height of 8,000 feet above ground.It has traveled a distance of 10,000 feet from the airport.if sam was to spot under the airplane ,how far would he have to travel?
*January 27, 2009 by jennifer*

**Physics**

An airplane has a velocity of 454 km/h relative to the moving air. At the same time, a wind blows northward with a speed of 99 km/h relative to earth. The airplane is moving in an easterly direction relative to earth. Find the speed of the airplane to relative to earth. So, i ...
*October 1, 2010 by Jon*