Resolving vectors - direction issue

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    Direction Vectors
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Homework Help Overview

The problem involves resolving vectors related to the positions of two orienteering teams in a forested area, with specific distances and angles given for each team. The original poster expresses confusion regarding how to measure the direction of team B from team A, specifically in relation to due east.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • The original poster attempts to understand the concept of measuring direction from due east, questioning why it cannot be considered due west instead. Other participants suggest drawing the vectors to scale and using the correct reference point for direction.

Discussion Status

The discussion is ongoing, with participants exploring the correct method to visualize the vector displacement and clarify the measurement of direction. Some guidance has been offered regarding the drawing of vectors, but no consensus has been reached on the original poster's confusion.

Contextual Notes

The original poster indicates they have completed part (a) of the problem but are struggling with part (b), specifically the measurement of direction from due east. There is a reference to an image intended to aid understanding, which may contain additional context for the discussion.

Hemingway
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So I've worked out part (a) - just not (b) as I don't understand how it can be measured from due east. I don't want it worked out for me, just help me understand this due east business. I can't see how it can be anything but due west...

Background:
Orienteering teams are operating in a densely forrested area.The GPS at their base shows the location of team A as 78.2 km away, 14° north of west, and team b as 231 km away, 59° east of north.

When team A uses its GPS to check the position of the team b, what does it give for the team b's (a) distance from them and (b) direction, measured from due east?

Homework Equations



Resolving vectors into components

The Attempt at a Solution



I know how to do this question except when it gets to: direction from due east. It seems that B's team could be measured from A, but this would be the due West right? hmmmmm... can someone help? thanks:)

The image below was constructed to show that theta could be from B team near east... I don't know it will show you an insight anyway...

[URL]http://www.flickr.com/photos/40253561@N06/4910222024/[/URL]

Thank you so much!
 
Last edited by a moderator:
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First, draw the vectors correctly to scale. How can 78.1 km be longer than 231 km?

To determine the vector displacement of b from A draw a vector with its tail at A and its head at b. Use A as the origin (i.e. N-S,E-W axes through A) to determine direction from A.

AM
 
Thank you very much! :)
 

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