Ships in Distress: Who Will Reach First?

  • Thread starter Thread starter bobby1
  • Start date Start date
  • Tags Tags
    Ships
bobby1
Messages
2
Reaction score
0

Homework Statement



A ship in distress sends up flares that are visible to two other ships. The athabasca notes that the flares are a N41 degrees E of its position. The Britiannia, which is 12.7 nautical miles due east of the athabasca sees the flares at a bearing of 310 degrees. will the athabasca or the britannia reach the ship in distress first if they travel at equal speeds. Where do I start.

Homework Equations





The Attempt at a Solution

 
Physics news on Phys.org
Start by drawing a picture!:smile:

I suggest putting the athabasca at the origin, letting North represent the positive y-direction and East, the positive x-direction.

Then label the position of the Britiannia and draw a vector pointing from the athabasca in the direction N 41 deg East and from the Britiannia at a bearing of 310 degrees. The point where those two vectors intersect is the location of the ship in distress. Find that location, then calculate which ship is closer.
 
gabbagabbahey said:
Start by drawing a picture!:smile:

I suggest putting the athabasca at the origin, letting North represent the positive y-direction and East, the positive x-direction.

Then label the position of the Britiannia and draw a vector pointing from the athabasca in the direction N 41 deg East and from the Britiannia at a bearing of 310 degrees. The point where those two vectors intersect is the location of the ship in distress. Find that location, then calculate which ship is closer.

thank you for your help!
 
Thread 'Use greedy vertex coloring algorithm to prove the upper bound of χ'
Hi! I am struggling with the exercise I mentioned under "Homework statement". The exercise is about a specific "greedy vertex coloring algorithm". One definition (which matches what my book uses) can be found here: https://people.cs.uchicago.edu/~laci/HANDOUTS/greedycoloring.pdf Here is also a screenshot of the relevant parts of the linked PDF, i.e. the def. of the algorithm: Sadly I don't have much to show as far as a solution attempt goes, as I am stuck on how to proceed. I thought...
Back
Top