Can Explorers Communicate After Traveling 5 km North and 6 km Northeast?

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Homework Help Overview

The problem involves two teams of explorers traveling from a common starting point, with one team moving north and then following a river, while the other team travels northeast and climbs a ridge. The question posed is whether the two teams can communicate given their radios have a limited range of 5 km.

Discussion Character

  • Exploratory, Mathematical reasoning, Problem interpretation

Approaches and Questions Raised

  • Participants discuss calculating the distances traveled by each team and consider using vector components to find the distance between their final positions. Some express uncertainty about the calculations and seek clarification on the use of angles and distance formulas.

Discussion Status

The discussion is ongoing, with participants sharing their attempts at calculations and seeking further guidance. There are multiple interpretations of how to approach the problem, particularly regarding the use of vectors and distance formulas.

Contextual Notes

Participants note the need for relevant equations and the importance of showing detailed calculations. There is also mention of constraints related to the problem setup, such as the lack of explicit angles for some paths and the requirement to illustrate the paths accurately.

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Homework Statement


Two teams of explorers leave a common point. The first team travels 5 km north across a plain, then follows a river 15 degrees west of north for 7 km before making camp for the night. THe second climbs a ridge, traveling basically due northeast for 6 km along a trail that climbs upward to an altitude of 2.5 km. This team then follows the ridge northward at approximately 4 km before making camp for the night. Can the two teams communicate that night if their radios have a range of 5 km?
 
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Show your attempted solution.
 
Draw a picture showing the paths of both groups. Once you have the picture drawn and distances labled it should be easy.

And yeah, you're suppossed to show relevant equations and your attempted solution.
 
Welcome to PF.
Show your attempt.
Are you not getting answer?
Show your calculations in detail.
We will try to printout your mistakes.
 
I thought the best course may be to try and find the magnitude of each of the respective teams. So for team one I assigned [5x, 7y, 0z] and for team two [6x, 2.5y, 4z].
If my calculations were right their respective magnitudes should be 8.60233 and 7.63217.

From there I get a bit fuzzy.
Help?

P.S. Sorry for not using the correct symbology with my explanation. I have no idea how to illustrate it on computer.
 
You have the coordinates of two points in space just find the distance between the two.
 
Jebus_Chris said:
You have the coordinates of two points in space just find the distance between the two.

Right. But that is my question. Nothing is coming to mind that I can use without the help of some other factor (i.e. an angle).
 
Unless I consider these points two more vectors and repeat the process...?
 
There would be two ways you could do this, essentially the same. You've got a formula, one that you learned a long time ago, but probably haven't used in awhile. It's the distance formula which finds the distance between two points. Or: when you have two values, a and b, and need to find the distance between them you just subtract them.
 
  • #10
So in essence you just take the difference from the respective magnitudes?
 
  • #11
JSOBOLEW said:
So in essence you just take the difference from the respective magnitudes?
These are vectors, you add them via their components.
 

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