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If it is 240 it is going South West?
I think the magnitude is 240, but there's no info that allows you to figure out the angle
East = 0 degree
ok. then the angle would be 0°
because both the plane and the wind are east
This is what it states. The direction of a vector is often expressed as a counter clockwise angle of rotation of the vector from due east. In such a convention, East is 0 degree, North 90, West is 180 and south 270.
I have to find the Magnitude and the direction
oh, gotcha. I thought you were saying that the plane was traveling east. Whatever direction the plane is flying in is the angle because a tail wind by definition is in the direction of travel. |dw:1436033950387:dw| they have to tell you a direction to start with
Ok, so we are staring with East 0 degree right?
they really gave you speeds and asked you to find velocity
Since we have 240 mag, which is a 45 degree we would be going in the direction of north east?
Honestly, I don't see how you can get a direction from the information provided. I just put that up there as an example of 2 different directions having the same magnitude
Is there maybe a picture with this problem?
Nope, just shows the jet and the wind magnitude
Maybe the jet is going east?
I'd go with that. really you could go with any direction.
I do have to calculate for Side Wind on the next problem, which will push it at a different angle
ok. that kind of makes sense. as if it's going 0° initially and then the side wind pushes it in another direction
still they could have made it more clear by stating explicitly that the direction was due east
I have to calculate for Tail, Head and Side Wind... Tail shoud be 240 and Head should be 160 and I have to do the side, which the wind is coming from the north so it will push it South east
so your angle for the head wind was also 0°?
Yes, because it is just pushing toward the jet
The side wind is the only thing I see that would make it change from east.
yes it is
Is the side wind also 40 mph ?
Yeah it must be east. It tells us here The direction of a vector is often expressed as a counter clockwise angle of rotation of the vector from due east. In such a convention, East is 0 degree, North 90, West is 180 and south 270
Hummm or is it West????
Is it going from East to West so the Plane is moving West?
I'd stick with east. it really doesn't say and east is a reasonable guess since that's 0
Yeah but it would move at 180 degree since it is moving at a straight line
which 180 would be moving West
that's kind of what I'm saying. they didn't give you and explicit direction to begin with. When you work a vector problem, it's supposed to say for example 40 mph due east, or 200 mph at 45° SE. They only gave you the magnitudes of the vectors. There's no way for you to figure out the directions. You just have to pick a assume as the starting point and work the rest of the problem with that assumed direction. Picking 0° is just the easiest starting directions
0 degree is the starting and they stat it is east so if the jet moves with only tail or head wind, it moves at 180 degrees
I am assuming this from this passage The direction of a vector is often expressed as a counter clockwise angle of rotation of the vector from due east. In such a convention, East is 0 degree, North 90, West is 180 and south 270
i see what you're saying. let me draw it out
they're both still going to be at 0° because the speed of the plane is greater than both the wind's vectors
But if it starts at 0, which it states it is often express as counter clockwise, so a jet moving straight from 0 would be 180
0° /due east is the horizontal x-axis. The angles are expressed starting in the counter clockwise direction
So you would say East. Why they make it so confusing lol
yeah I would. I don't know, this is just a really badly worded question
What gets me is where it stats from due east like if you are coming from and then going to
I always think of the start point as the origin, which makes it a little easier
I gotta run. hopefully I was able to give some help. For the sidewind, since it's coming from the north, it will be at a 270° direction
Yes, you are always a lot of help
you're welcome |dw:1436036875395:dw|