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July 24, 2014

# Search: A plane has an air speed of 200 m/s due North, and is in a wind of 50.0 m/s to the West. The plane's speed relative to the ground is

Number of results: 37,645

physics
You are on an airplane traveling 30° south of due west at 130.0 m/s with respect to the air. The air is moving with a speed 31.0 m/s with respect to the ground due north. 1) What is the speed of the plane with respect to the ground? 2) What is the heading of the plane with ...
September 10, 2012 by ali

Algebra II
A plane is headed due west with an air speed of 212 km/h. It it driven from its course by a wind from due north blowing at 23.6 km/h. Find ground speed of the plane and the actual direction of travel.
November 2, 2011 by Arielle

physics
You are traveling on an airplane. The velocity of the plane with respect to the air is 180 m/s due east. The velocity of the air with respect to the ground is 40 m/s at an angle of 30° west of due north. 1)What is the speed of the plane with respect to the ground? 2)What is ...
September 17, 2011 by aaa

Physics
You are traveling on an airplane. The velocity of the plane with respect to the air is 110.0 m/s due east. The velocity of the air with respect to the ground is 39.0 m/s at an angle of 30° west of due north. 1) What is the speed of the plane with respect to the ground? 2) What...
September 5, 2012 by David

Physics
1. A small plane can travel at 200 km/h in still air. If a 50.0 km/h wind is coming from the east, determine the ground velocity of the plane if the pilot keeps the plane pointed [N]. 2. A pilot is flying from City A to City B which is 300 km [NW]. If the plane will encounter ...
April 24, 2014 by Corey Brown

trig
A plane has an airspeed of 200 miles per hour and a heading of 28.0°. The ground speed of the plane is 207 miles per hour, and its true course is in the direction of 38.0°. Find the speed and direction of the air currents, assuming they are constants. (Round your answers to ...
November 29, 2012 by bryan

Physics
A pilot flies a plane at a speed of 600 km/h with respect to the surrounding air. A wind is blowing to the northeast at a speed of 100 km/h. In what direction must the plane be aimed so that the resulting direction of the plane is due north?
January 27, 2014 by Anonymous

Physics
The air speed indicator of a plane that took off from Detroit reads 373 km/h and the compass indicates that it is heading due east to Boston. A steady wind is blowing due north at 42.3 km/h. Calculate the speed of the plane with reference to the ground. If the pilot wishes to ...
January 30, 2011 by Emily

physics/precalculus
3) A wind with a speed of 60 km/h is directed TOWARDS the SE. A plane, flying due NORTH has an airspeed of 280 m/s. What is the speed (in compass notation) the plane is actually travelling as seen by an air traffic controller on the ground?
December 16, 2013 by Emma

calc 3
The magnitude of a velocity vector is called speed. Suppose that a wind is blowing from the direction N45°W at a speed of 40 km/h. (This means that the direction from which the wind blows is 45° west of the northerly direction.) A pilot is steering a plane in the direction N60...
August 31, 2012 by Becky

trigonometry
A plane is headed due west with an air speed of 300 mph. The wind is from the north at 80 mph. Find the bearing for the course and the ground speed of the plane.
November 27, 2012 by mikey

physics
An airplane pilot wishes to fly due west. A wind of 82.0m/s is blowing toward the south.If the airspeed of the plane (its speed in still air) is 375.0 km/h, in which direction should the pilot head? What is the speed of the plane over the ground?
February 2, 2010 by Anonymous

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

Physics
You are on an airplane traveling 30° south of due west at 130 m/s with respect to the air. The air is moving with a speed 30 m/s with respect to the ground due north. One question.. 2) What is the heading of the plane with respect to the ground? (Let 0° represent due north, 90...
February 15, 2014 by Cam

Physics
An airplane needs to fly due south. The plane can fly at a speed of 720.0 km/hr in still air. If there is a wind blowing to the northeast at 70.0 km/hr, in what direction should the plane fly to maintain its heading of due south? How long will it take to fly a 1500.0 km distance?
April 21, 2014 by Tyler

Physics
A model airplane of mass 0.9 kg is attached to a horizontal string and flies in a horizontal circle of radius 5.2 m, making 1.2 revolutions every 8 s. (The weight of the plane is balanced by the upward “lift” force of the air on the wings of the plane.) The accelaration due to...
December 21, 2010 by Aaron

Physics
A model airplane of mass 0.9 kg is attached to a horizontal string and flies in a horizontal circle of radius 5.2 m, making 1.2 revolutions every 8 s. (The weight of the plane is balanced by the upward “lift” force of the air on the wings of the plane.) The accelaration due to...
December 21, 2010 by Aaron

physics
A model airplane of mass 0.7 kg is attached to a horizontal string and ﬂies in a horizontal circle of radius 5.6 m, making 1.6 revolutions every 7 s. (The weight of the plane is balanced by the upward “lift” force of the air on the wings of the plane.) The accelaration ...
December 10, 2011 by tanya

physics
A model airplane of mass 1.5 kg is attached to a horizontal string and ﬂies in a horizontal circle of radius 5.8 m, making 2 revolutions every 8 s. (The weight of the plane is balanced by the upward “lift” force of the air on the wings of the plane.) The accelaration ...
November 25, 2012 by James

Physics
A pilot must fly his plane to a town which is 200km from his starting point in a direction 30degrees N of E. He must make the trip in 1/2 h. An 80km/h wind blows in a direction 30degrees E of S. Find the speed of the plane relative to air. I found the speed of the plane ...
March 2, 2008 by Anonymous

Physics
A pilot must fly his plane to a town which is 200 km from his starting point in a direction 30 degrees N of E. He must make the trip in 1/2 hr. An 80km/h wind blows in a direction 30 degrees E of S. Find the speed of the plane relative to the ground, the speed relative to air ...
March 1, 2008 by Anonymous

mlit
a plane at a height of 5000m is travelling ata constant speed of 300m.s. A heat seeking missile is fired at the plane when it is 5000m due east of an airbase. if the missile's speed is 350m.s, will the missile hit the plane before it reaches 9000m due west?
January 5, 2013 by lizzy

math
Application Giovanni is flying his Cessna airplane on a heading as shown. His instrument panel shows an air speed of 130 mi/h. (Air speed is the speed in still air without wind.) However, there is a 20 mi/h crosswind. What is the resulting speed of the plane?
March 8, 2013 by x

math
Application Giovanni is flying his Cessna airplane on a heading as shown. His instrument panel shows an air speed of 130 mi/h. (Air speed is the speed in still air without wind.) However, there is a 20 mi/h crosswind. What is the resulting speed of the plane?
March 9, 2013 by y

Geometry/trig
A plane is flying due south at a speed of 300 mph. The wind is blowing from the west at a speed of 40 mph. Find the resultant speed of the plane and the direction of the plane
February 6, 2012 by Lezah

physics
a plane is flying with a constant speed along a straight line at an angle 60degree with the horizontal. the weight(W) of the plane is 90,000N and its engine provides a thrust(T)of 120,000N in the direction of flight . two additional forces are exerted on the plane :the lift ...
February 11, 2012 by ash

Algebra
Mattie Evans drove 250 miles in the same amount of time that it took a turbopropeller plane to travel 1250 miles. The speed of the plane was 200 mph faster than the speed of the car. Find the speed of the plane
November 6, 2010 by MARIAH

Algebra
Mattie Evans drove 300 miles in the same amount of time that it took a turbo propeller plane to travel 1300 miles. The speed of the plane was 200 mph faster than the speed of the car.Find the speed of the plane.
February 25, 2013 by Roxy

Physics
A cessna plane flies with a speed of 150km/h relative to the air and points due east. A wind is blowing at a speed of 20km/h at 45 degrees south of east (ie the wind is blowing from the northwest). The resultant veloity of the plane relative to the ground is?
June 14, 2011 by Matt

Physics
A small plane can travel at 200 km/h in still air. If a 50.0 km/h wind is coming from the east, determine the ground velocity of the plane if the pilot keeps the plane pointed [N].
April 21, 2014 by Corey Brown

Physics
A small plane can travel at 200 km/h in still air. If a 50.0 km/h wind is coming from the east, determine the ground velocity of the plane if the pilot keeps the plane pointed [N].
April 22, 2014 by Corey Brown

Physics
A small plane can travel at 200 km/h in still air. If a 50.0 km/h wind is coming from the east, determine the ground velocity of the plane if the pilot keeps the plane pointed [N].
April 22, 2014 by David DiFranco

Physics
A small plane can travel at 200 km/h in still air. If a 50.0 km/h wind is coming from the east, determine the ground velocity of the plane if the pilot keeps the plane pointed [N].
April 23, 2014 by David DiFranco

Physics
A small plane can travel at 200 km/h in still air. If a 50.0 km/h wind is coming from the east, determine the ground velocity of the plane if the pilot keeps the plane pointed [N].
April 23, 2014 by David DiFranco

sience
a plane is flying due east in still air at 395km/h suddenly the plane is hit by wind blowing at 55km/h toward the west. what is the resultant of the plane?
June 2, 2014 by anissa

Math
An aircraft flew 3hrs with the wind. The return trip took 4hrs against the wind. If the speed of the plane in still air is 180mph more than the speed of the wind, find the wind speed and the speed of the plane in still air.
September 27, 2011 by Ingrid

Physics
A plane has an airspeed of 200 m/s due north and is subject to a westerly wind of 50 m/s. What is the planes speed relative to the ground?
November 13, 2011 by Anonymous

Gr. 12 Physics
A pilot must fly his plane to a town which is 200km from his starting point in a direction 30degrees N of E. He must make the trip in 1/2 h. An 80km/h wind blows in a direction 30degrees E of S. Find the speed of the plane relative to air. I found the speed of the plane ...
September 30, 2012 by Myles

Physics
Consider a plane with a velocity relative to the air of 198 m/s in a westerly direction. If the wind has a speed relative to the ground of 56 m/s (in an easterly direction), how long does it take for the plane to travel from one city to another that is due west of the first by...
October 19, 2012 by Lily

Calculus/Vectors
An airplane heads due south with an air speed of 480km/h. Measurements made from the ground indicate that the plane's ground speed is 528km/h at 15 degrees east of south. Calculate the wind speed.
May 2, 2011 by Anonymous

Calculus 3
Vectors The thrust of an airplane's engine produces a speed of 400 mph in still air. The wind velocity is given by <-20,30>. In what direction should the plane travel to fly due south? Give your answer as an angle from due south.
May 11, 2011 by Anonymous

Trigonometry law of cosine
A plane is flying with an airspeed of 200 miles per hour and heading 150°. The wind currents are running at 30 miles per hour at 175° clockwise from due north. Use vectors to find the true course and ground speed of the plane. (Round your answers to the nearest ten for the ...
April 7, 2014 by NEED HELP ASAP

algebra II
An aircraft flew 6 hours with the wind. The return trip took 7 hours against the wind. If the speed of the plane in still air is 276 miles per hour more than the speed of the wind, find the wind speed and the speed of the plane in still air. The wind soeed was ______ mph.
October 21, 2010 by Anonymous

repost math question
An aircraft flew 6 hours with the wind. The return trip took 7 hours against the wind. If the speed of the plane in still air is 276 miles per hour more than the speed of the wind, find the wind speed and the speed of the plane in still air. The wind soeed was ______ mph.
October 22, 2010 by Anonymous

physics
A plane can fly at Mach 1.47, which means the speed of the plane is 1.47 times the speed of sound in air. What is the angle between the direction of propagation of the shock wave and the direction of the plane's velocity? How is the answer 47.1 degrees
October 26, 2010 by flame

Geometry
A plane flying 16 degrees west of north at 289mph is flying in air which is moving 32mph at due west. Find the resulting speed and direction of the plane. (Step by step please!)
September 24, 2013 by George

Math
In still air a plane has air speed 300km/h and flies on a bearing of 110 degrees. If the wind is blowing at a speed of 100km/h from a bearing of 60 degrees, find the actual velocity of the plane.
August 19, 2012 by Bafhenyi

SCIENCE
A pilot of a light plane heads due north at air speed of 400km/h and wind is blowing from the west at a 60km/h.what is
July 12, 2010 by ANTHONY

math
an air plane takes off with an elevation of 27degrees. what is the total land distance the plane reaches a cruising altitude of 875 feet ? if the plane is traveling at a steady speed of 651 feet per hour, how much time will it take the plane to reach its cruising distance? ...
February 13, 2014 by molly

Algebra 2
An airplane flies 1050 km with the wind. In the same amount of time, it can fly 750 km against the wind. The speed of the plane in the still air is 200 km/h. Find the speed of the wind.
April 12, 2012 by Nancy

physics
While taking a plane flight to a meeting, a physicist decides to do a mental calculation of how much fuel the plane would consume in the absence of friction, assuming its engines have an efficiency of 22.0% and the mass of the plane is 200,000 kg. Each gallon of jet fuel ...
July 25, 2013 by Justin

algebra
A pilot heading his polane due north finds the actual direction of travel to be 5.2 NE. The planes's air speed is 315 mi/h, and the wind is from die west. Find the plane's ground speed and the velocity of the wind.
November 2, 2011 by Arielle

Honors Trig
a plane is flying in the direction of 190 degrees with an air speed of 400 mph. Its course and ground speed are 200 degrees and 350 mph respectively. What is the speed and direction of the wind?
May 8, 2013 by Sheryl

Geometry/Trig
A plane is flying and show an air speed of 130 mi/h. However, there is a 20 mi/hr crosswind. What is the resulting speed of the plane.
March 3, 2014 by Anna

College physics
An airplane is cruising along in a horizontal level flight at a constant velocity, heading due west. (a) If the weight of the plane is 5.54 104 N, what is the net force on the plane? (b) With what force does the air push upward on the plane?
June 6, 2011 by Amanda

Math
a plane flies due north at 300 mi/h for 3 h then due west at 250 mi/h. If x represents the number of hours the plane is flying due west, determine for what values of x the plane will be more than 3700 mi from it's original point.
March 8, 2011 by Rob

Physics
A plane is headed due west with an air speed of 221 m/s. The wind blows south at 37.5 m/s. Find the velocity of the plane relative to the earth. The question asks for the magnitude which I found is 224 m/s. The question also asks for the direction_____south of west. Can ...
February 2, 2011 by Lindsey

Algebra II
The heading of a plane is 27.7 degrees NE, and its air speed is 255 mi.h. If the wind is blowing from the south with a velocity of 42.0 mi/h, find the actual direction of travel of the plane, and its ground speed.
November 2, 2011 by Arielle

precalc
1. A plane is headed at 122 degrees with an air speed of 350mph in a wind that is blowing from 38 degrees. Find the ground speed of the plane and the speed of the wind if the actual flight was at 133 degrees. 2. A plane is heading at 20 degrees at 300mph If a wind is blowing ...
April 14, 2013 by sarah

engineering
using air pressure, a ball of 0.5kg is forced to move through the tube lying in the horizontal plane and having the shape of a logarithmic spiral. If the tangential force exerted on the ball due to the air is 6N, determine the rate of increase in the ball's speed at the ...
November 15, 2008 by sarah

Flying to Kampala with a tailwind a plane average 158km/h. On the return trip the plane only averaged 112km/h while flying back into the same wind. Find the speed of the wind and the speed of the plane in still air.
February 28, 2013 by Anonymous

physics
While taking a plane flight to a meeting, a physicist decides to do a mental calculation of how much fuel the plane would consume in the absence of friction, assuming its engines have an efficiency of 22.0% and the mass of the plane is 200,000 kg. Each gallon of jet fuel ...
July 26, 2013 by Justin

physics
While taking a plane flight to a meeting, a physicist decides to do a mental calculation of how much fuel the plane would consume in the absence of friction, assuming its engines have an efficiency of 22.0% and the mass of the plane is 200,000 kg. Each gallon of jet fuel ...
July 28, 2013 by Justin

college physicalscience
the air speed of a plain is 223km/h and the pilot keeps the plane pointed north. A wind is blowing73.6km/h from the west. Determine the speed (in km/h) of the plane relative to the ground
September 19, 2010 by tiana

Physics
A. A small plane departs from point A heading for an airport at point B 480 km due north. The airspeed of the plane is 200 km/h and there is a steady wind of 50 km/h blowing northwest to southeast. Determine the proper heading for the plane. B. How long will the trip take?
September 12, 2011 by John

An airplane traveling north at 400 m/s is accelerated due east at a rate of 50 m/s2 for 6 s. If the effects of air resistance and gravity are ignored, what is the final speed of the plane?
February 5, 2014 by jason

Physics
The piolt of an airplane wishes to fly due north, but there is a 65-km/h wind blowing toward the east. in what direction should the pilot head her plane if its speed relative to the air is 340 km/h?
May 28, 2014 by Britt

HELLLLP Math
A steel tube, which is closed at both ends, is filled with air. The air in the tube is vibrating at a frequency of 200·Hz. Use 340·m/s for the speed of sound in air. If the 200·Hz vibration respresents the fundamental standing wave for the tube, how long is the tube?
December 8, 2011 by jen

algebra-word problem
Flying to Kampala with a tailwind a plane averaged 158 km/h. On the return trip the plane only averaged 112 km/h while flying back into the same wind. Find the speed of the wind and the speed of the plane in still air. TIA
March 23, 2008 by jen

Algebra II
A plane flies with a heading of 48 degrees NW and an air speed of 584 km/h. It is driven from its course by a wind of 58.0 km/h from 12.0 degrees SE. Find the ground speed and the drift angle of the plane.
November 2, 2011 by Arielle

Trig
A plane has a speed of 250mph and flies with a bearing of N35degE. The wind is blowing from the west at 25 mph with a heading of due east. What is the actual speed and heading of the plane? Round to one decimal place.
April 21, 2013 by Nancy

Physics
A 73kg sprinter, starting from rest, reaches a speed of 7.0 m/s in 1.8s, with a negliable effect due to air resistance. The sprinter then runs with the remained of the race at a steady speed of 7.0 m/s under the influence of a 35-N force due to air resistance. What is the ...
February 27, 2012 by Bob

Trig
This has to do with vectors...I'm wondering if I set up the diagram correctly? A plane has a speed of 250mph and flies with a bearing of N35degE. The wind is blowing from the west at 25 mph with a heading of due east. What is the actual speed and heading of the plane?
April 20, 2013 by Mary

physics
A truck engine transmits 28.0 { kW} (37.5 hp) to the driving wheels when the truck is traveling at a constant velocity of magnitude 60.0km/h( 37.3mi/h) on a level road. 1.Assume that 65% of the resisting force is due to rolling friction and the remainder is due to air ...
April 4, 2010 by mohd

Physics
Due to a strong wind from the west of 65 km/h, a plane ends up traveling 330 km/h [W 15 S] relative to the ground. What was the magnitude of the velocity of the plane relative to the air in km/h?
July 8, 2014 by Anonymous

math-calculus
a plane flew from red deer to winnipeg, flying distance of 1260 km. on the return journey, due to a strong head wind, the plane travelled 1200 km in the same time it took to complete the outward journey. on the outward journey, the plane be able to maintain an average speed ...
January 8, 2012 by Shreya

physics
A jetliner can fly 5.57 hours on a full load of fuel. Without any wind it flies at a speed of 2.43 x 102 m/s. The plane is to make a round-trip by heading due west for a certain distance, turning around, and then heading due east for the return trip. During the entire flight, ...
October 6, 2011 by randy

physics help
A supply plane needs to drop a package of food to scientists working on a glacier in Greenland. The plane flies 200 above the glacier at a speed of 200. How far short of the target should it drop the package?
May 26, 2011 by Brandie

math
Flying to Seoul with a tailwind a plane averaged 343 mph. On the return trip the plane only averaged 307 mph while flying back into the same wind. Find the speed of the plane in still air and the speed of the wind.
April 17, 2013 by Angela

Physics
a pilot must fly a destination 520 km away in a direction of N30 degree E. The air speed of the plane is 320Km and the wind speed is 85 km/h E20 degree Suth. Find the heading of the plane and the time for the trop.
October 4, 2009 by Jessica

Algebra
If a plane can travel 500 miles per hour with the wind 400 miles per hour against the wind, find the speed of the plane without a wind and the speed of the wind? What is the speed of the plane in still air?
March 24, 2012 by rangel

physics
Two airplanes taxi as they approach the terminal. Plane 1 taxies with a speed of 12 m/s due north. Plane 2 taxies with a speed of 8.5 m/s in a direction 20 degrees north of west.
January 12, 2012 by Anonymous

Physics
An airplane flies due north at 145 km/h with respect to the air. There is a wind blowing at 65 km/h to the east relative to the ground. What is the plane's speed relative to the ground?
October 6, 2010 by Preston

Physics
An airplane flies due north at 160 km/h with respect to the air. There is a wind blowing at 80 km/h to the east relative to the ground. What is the plane's speed relative to the ground?
November 21, 2010 by Daniel

Algebra
An air plane can travel 560 miles per hour with the wind and 480 miles per hour against the wind. Determine the speed of the plane in still air and the speed of the wind.
March 28, 2013 by Lora

physics
A steel tube, which is closed at both ends, is filled with air. The air in the tube is vibrating at a frequency of 200·Hz. Use 340·m/s for the speed of sound in air. (a) What is the wavelength of the sound waves in the tube? _____ m. (b) If the 200·Hz vibration respresents the...
December 8, 2011 by jen

Physics
A plane flies horizontally at constant ground speed v=720km/h. The pilot is informed by an air traffic controller that he must immediately change his direction of flight while keeping the same altitude. The pilot performs a turning maneuver by rolling the plane to a banked ...
April 2, 2013 by Crow

Physics
A plane is ﬂying horizontally with speed 152 m/s at a height 2110 m above the ground, when a package is dropped from the plane. The acceleration of gravity is 9.8 m/s 2 . Neglecting air resistance,A second package is thrown downward from the plane with a vertical speed ...
December 9, 2012 by Emily

physical
Question 10 An airplane traveling north at 400 m/s is accelerated due east at a rate of 50 m/s2 for 6 s. If the effects of air resistance and gravity are ignored, what is the final speed of the plane? 1. 300 m/s 2. 400 m/s 3. 500 m/s 4. 700 m/s 5. 800 m/s
August 9, 2010 by Nhlanhla

Physics
A plane is headed east with an air speed of 294.0 m/s. The wind blows southeast at 42.0 m/s. Find the velocity of the plane relative to the earth.
February 2, 2012 by Aaron

Physics
A pilot maintains a heading due west with an air speed of 24o km/h. After flying for 30 min, he finds himself over a town that he knows is 150 km west and 40 km south of his starting point. a) Waht is the wind velocit, in magniture and direction? b) What heading should he now ...
July 10, 2011 by Capreeca

Algebra
A Coast Guard plane has enough fuel to fly for 6hr, and it's speed in still air is 240 mph. The plane departs with 40 mph tailwind and returns to the same airport flying into the wind. How far can the plane travel under these conditions?
May 24, 2014 by Kgk

physics
a 200 kg block was moved along an inclined plane to a height of 10m. during this process 3000J of energy was lost due to friction. a. calculate the efficiency of the inclined plane. b. what would the efficiency of the simple machine be if the incline were frictionless? c. how ...
January 31, 2009 by april

Physics
An aircraft has a cruising speed of 100 m/s On a particular day, a wind is blowing from the west at 75.0 m/s If the plane is pointed due north, what would be the magnitude and direction of the velocity relative to the ground? If the pilot wishes to have a resultant direction ...
October 16, 2013 by Niki

physics
A jet plane is flying with a constant speed along a straight line, at an angle of 30.0° above the horizontal, as shown in part (a) of the drawing. The plane has a weight of magnitude 87500 N, and its engines provide a forward thrust . In addition, the lift force (directed ...
July 25, 2013 by ODU

Physics
An airplane has an effective wing surface area of 17 m2 that is generating the lift force. In level flight the air speed over the top of the wings is 63.9 m/s, while the air speed beneath the wings is 58.0 m/s. What is the weight of the plane? Answer in N
December 8, 2012 by Jessica

Physics
Can someone explain to me how I'd draw this problem and what the resultant vector should be as well as the placements of the angles if possible? A pilot must fly his plane to a town which is 200km from his starting point in a direction 30degrees N of E. He must make the trip ...
March 2, 2008 by Anonymous

Physics
An airplane flies due north at 250 km/h relative to the air. There is a wind blowing at 60 km/h to the northeast relative to the ground. What are the plane's speed and direction relative to the ground?
October 6, 2010 by Preston

Physics
An airplane flies due north at 220 km/h with respect to the air. There is a wind blowing at 65 km/h to the northeast with respect to the ground. What are the plane's speed and direction with respect to the ground?
November 9, 2011 by Martha

science
An airplane flies due north at 235 km/h relative to the air. There is a wind blowing at 65 km/h to the northeast relative to the ground. What are the plane's speed and direction relative to the ground?
September 16, 2012 by mary

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