Boat Positioning: Lorraine and Jeff's Displacement in Race - Homework Question

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Homework Help Overview

The problem involves the displacement of two boats, Lorraine's and Jeff's, after they navigate from a common starting point. The context is based on their respective paths, with Lorraine heading east and then north, while Jeff travels north and then east. The questions focus on determining their relative positions and the direction they would head if they raced back to the harbor.

Discussion Character

  • Exploratory, Assumption checking, Mathematical reasoning

Approaches and Questions Raised

  • Participants discuss the relative positions of the boats, with some questioning whether they end up in the same location. There is also consideration of the direction they would head back, with suggestions of southwest and discussions about compass headings and trigonometric calculations.

Discussion Status

The discussion is ongoing, with participants exploring different interpretations of the problem. Some have provided mathematical approaches, while others are clarifying assumptions about the positions and directions involved. There is no explicit consensus yet, but guidance on compass headings and trigonometric methods has been shared.

Contextual Notes

Participants are navigating potential ambiguities in the problem, such as the interpretation of relative positions and the need for specific directional formats (e.g., compass headings). There is also mention of the possibility of needing to calculate angles using trigonometric functions.

Rasofia
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Homework Statement



Lorraine steered her boat out of the harbor, heading east. She traveled 500 m to one buoy and then turned north and headed 300 m to another buoy. Jeff also left the harbor from the same point, and traveled 300 m [N] to a buoy, and then went 500 m [E].
a) What is the position of Jeff's boat relative to Lorraine's boat after they finish moving?
b) If Lorraine and Jeff race straight back, in what direction are they headed?[/B]

Homework Equations

The Attempt at a Solution


Okay, for letter a, I was a bit confused because are they not in the same position? They end up in the same place. But I guess technically Jeff's position would be west relative to Lorraine's boat?
For letter b, I said southwest, because they first go north east. Correct or not?

Thanks for your help :)[/B]
 
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Rasofia said:
technically Jeff's position would be west relative to Lorraine's boat?
Unless he rammed her and one or both boats sank.
SW is good. There is a possibility that they want a compass heading in degrees. Remember enough trig to calculate that?
 
Bystander said:
Unless he rammed her and one or both boats sank.
SW is good. There is a possibility that they want a compass heading in degrees. Remember enough trig to calculate that?

I used tangent inverse (y/x) and got around 31 degrees so maybe that's it?
I don't really know if that would be the right equation for this though.
 
Rasofia said:
be the right equation for this though.
That's perfectly good. Compass headings for mariners start with 0 degrees at due north, proceed clockwise through 90 (E), 180 (S), 270 (W), and back to 360 (a full circle) reset to 0 (N). So you've got 270 - 31 rather than 225 which would be a nitpicker's SW. Hand them the number and SW or WSW and you are in business.
 
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