Question

Can someone please answer this! PLEASE!!!

A plane, traveling with a velocity relative to the air of 320km/h (28 degrees S of W), passes over Winnipeg. The wind velocity is 72 km/h (S). Determine the displacement of the plane from Winnipeg 2 hours later?

Answer 1

I'm not 100% sure, but it sounds as easy as using d = rt

d = rt

d = 320*2

d = 640

so the displacement would be 640 km

but again, I'm not 100% sure

Answer 2

the displacement is 7.2 x10^2

Answer 3

720 eh, ok let me think it over

Answer 4

thanks anyway. ok

Answer 5

so the 28 degrees south of west is the wind direction

does it say the plane's direction?

or does it show this in a pic?

Answer 6

28 is the planes direction

Answer 7

oh ok, so what's the wind's direction?

Answer 8

oh nvm, i see it

it's south

Answer 9

south

Answer 10

gotta learn how to read lol

Answer 11

lol

Answer 12

well I guess one way you can do this is if you draw out the vectors for the plane and the wind

the wind would be the vector <0, -72>

Answer 13

the plane's vector would be some vector with a magnitude of 320 and an angle of 208 (add 180 to 28, we do this because we're in the 3rd quadrant)

Answer 14

but I'm not sure about the plane's vector

Answer 15

ok.. i found an answer for it lol

Answer 16

what did you get, still stumped (lol this is probably why i don't like physics)

Answer 17

http://ca.answers.yahoo.com/question/index?qid=20100923134557AAob5B1

Answer 18

thanks

Answer 19

np, i don't like physics anymore

Answer 20

lol don't blame you

i've hated physics for a while

Answer 21

i use to like it, but now my textbook is crappy at explaining and my teacher doesn't do examples since he wants us to do them. I'm falling behind

Answer 22

hmm i wonder if a site like physicsforums.com would help?

I've seen that site a bit back when I was in physics

Answer 23

I think i tried to join that site, but by the time they accepted me, my first physics class was over.

Answer 24

oh they don't just let anyone join? that's kinda stupid

Answer 25

you will have to sign up, then they have to get you approved, which for me took a long time and by the time it happened it was no help

Answer 26

get approved for what exactly? sounds like you're getting a background check lol

Answer 27

idk. they said they needed to create my account

Answer 28

strange, well hopefully your account is still there to go to

Answer 29

yea, but i dont know were my log in name or password is

Answer 30

oh that might be a problem

maybe you can reset things?

Answer 31

i dont even know . i might get a tutor instead

Answer 32

that sounds like a better idea

Answer 33

yea, they just don't have to cost so much

Answer 34

I'm sure you can find one for reasonable rates

Answer 35

hopefully