vectors

- anonymous

vectors

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- anonymous

|dw:1377852050301:dw|

- dan815

|dw:1377852107630:dw|

- zzr0ck3r

the Dz is throwing me off, we would only be moving in 2d (on a plane)

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## More answers

- zzr0ck3r

and there are 2 people?
A and B?

- anonymous

yeah i don't know why but there are A and B

- dan815

|dw:1377852160749:dw|

- dan815

then they both have the same dx and dy

- zzr0ck3r

Dx = 500sqrt(3)/2
Dy = 250
Dz = 0

- anonymous

and yes it is 2d...it says "hint:draw set of xy axis sketch A and B's displacement D on your axes, assuming that they are in standard orientation"

- dan815

|dw:1377852280693:dw|

- dan815

can you copy paste your question it doesnt make sense.. unless they are area coupole holding hands

- dan815

are you sure one of them isnt going somewhere else

- anonymous

yeah they are walking exactly together

- dan815

okay then you are done

- dan815

GIVE ME MEDAL

- anonymous

what is magnitude of D

- dan815

STOP being stingy

- dan815

:)

- dan815

u already have magnitude of Dx and Dy what u want then

- dan815

magnitude means length

- anonymous

of displacement D

- dan815

|dw:1377852550296:dw|

- anonymous

oh so components is 500 cos 30 and magnitude is 250 sqrt(3) correct me if i am wrong

- dan815

>_>

- dan815

500 cos 30 = 250 sqrt3

- anonymous

yeah right but what is difference between component and magnitude

- dan815

component means a part of something

- dan815

magnitude = length of something

- dan815

what component do you want

- anonymous

component of dx, dy and dz

- dan815

Dx is a component of D

- dan815

and Dx has a magnitude of 250sqrt3

- dan815

Dx has a direction in only in the x direction or in the i unit vector

- dan815

Dx=<250 sqrt3,0>
Dy=
D=<250sqrt3,250>

- dan815

D=<250sqrt3,-250>

- dan815

|dw:1377852912732:dw|

- dan815

make sense this is their vector notation

- zzr0ck3r

I stlil think we have a 3rd component, because we are in 3-space

- anonymous

lets say they both run instead of walking, what are the components of displacement now

- dan815

|dw:1377853069435:dw|

- dan815

same

- anonymous

oh so the third would be <250sqrt(3),250,0> i guess

- zzr0ck3r

but we dont do anything in that direction
so
\[<250\sqrt{3},250,0>\]

- dan815

a vector will not account for the speed, it takes to travel

- dan815

yah u got it

- dan815

when you imagine stuff, do you see a dark place

- dan815

or do you see a brightly lit place

- anonymous

alright i got it. component of lets say Dx is 500 cos (30) and magnitude of D is <250sqrt(3), 250, 0> right?

- anonymous

no lol why would you ask that

- dan815

because i just realized when i try to imagine vectors, i was trying to draw lines in a dark place.. and it wasnt visible

- zzr0ck3r

I look at the corner of a room, on the floor, that is the origin.

- dan815

lol

- dan815

what will you do when u go blind

- anonymous

my question ^

- zzr0ck3r

x is left, y is right , z is up
the room you are in is the first quad where x,y,z >0

- zzr0ck3r

I would not have passed 3d calculus without that tool ...lol

- dan815

|dw:1377853412219:dw|

- zzr0ck3r

yep, corner of a room^^^^

- dan815

then you can rorate that axis around and get all funky

- anonymous

- zzr0ck3r

|dw:1377853472591:dw|

- dan815

lol

- zzr0ck3r

lol

- dan815

zzrpockers 3d space has some holes built into it

- anonymous

and squares too lol

- dan815

do you look at the picture frame for your 2d view

- zzr0ck3r

it has a door and a window in it. I imagine those are the other spacial dimensions we hear about

- anonymous

but still good idea imagine a 3d as room

- zzr0ck3r

nah 2d is just paper

- zzr0ck3r

so my door knob is <0,4,5>

- dan815

|dw:1377853594591:dw|

- zzr0ck3r

<0,5,4>

- zzr0ck3r

lol

- dan815

|dw:1377853661476:dw|

- dan815

are you over there

- zzr0ck3r

|dw:1377853695653:dw|

- zzr0ck3r

ok we should move on...lol

- dan815

|dw:1377853802548:dw|

- dan815

then*

- zzr0ck3r

@Best_Mathematician let me know when you want to talk about vector equations of a line, I just tutored someone on that a few days ago, so its fresh...

- dan815

and u should probably go to a psycologist

- zzr0ck3r

lol @dan815

- anonymous

|dw:1377853884596:dw| my room with 29 dimesions ;p my question is till there @zzr0ck3r you guys didn't notice it

- zzr0ck3r

lol

- zzr0ck3r

nice work

- anonymous

component of Dx is 500 cos (30) and magnitude of D is <250sqrt(3), 250, 0> right?

- zzr0ck3r

um
one of the components of D is Dx = 250sqrt(3)
another component is Dy
Dx has no "components"
magnitude of d is
\[\sqrt{(250\sqrt(3)^2+25^2)}\]

- anonymous

magnitude of displacement D is 500

- zzr0ck3r

\[\sqrt{(250\sqrt{3})^2+250^2}\]*

- zzr0ck3r

=\[\sqrt{3*250^2+250^2}=\sqrt{4*250^2}=2*250=500\]

- zzr0ck3r

correct

- anonymous

i got it...thanks...i got no more medals sorry

- zzr0ck3r

lol I couldnt care less about medals

- zzr0ck3r

if I did I would not stay here for an hour :)

- anonymous

correct...you guys helped me recall a lot of stuff back.. thanks.last part i am posting is Funny vectors...lets see there

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