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1 vote
When I was little, I used to play a game with my friends. One of us would lie down in a blanket and

get wrapped up like a big dumpling, then spun around and dragged some random direction. Then, we
stopped somewhere and the person inside had to guess where they were. Sometimes I would just
use how far I think I've traveled, because I didn't know the direction, and the fact that my house
wasn't very big, to guess right.
If I feel myself dragged 5 feet forward, 9 feet left, then 6 feet forward again, and 2 feet back to the
right.

User Anil Arya
by
7.3k points

2 Answers

7 votes

To determine the final position, you can add up the changes in distance and direction:

1. 5 feet forward

2. 9 feet left

3. 6 feet forward

4. 2 feet back to the right

calculate the net movement:

Forward: 5 feet + 6 feet = 11 feet

Left: 9 feet

Right: 2 feet

So, the person's final position is 11 feet forward, 9 feet left, and 2 feet to the right from their starting point. If you want the overall displacement from the starting point, you can use the Pythagorean theorem:

\[ \text{Displacement} = \sqrt{(11 \text{ ft})^2 + (9 \text{ ft})^2 + (2 \text{ ft})^2} \]

This will give you the straight-line distance from the starting point to the final position.

4 votes

The movements described can be mapped onto a grid using vector addition, with each movement affecting the x and y coordinates on the grid. Summing the movements (5 feet forward, 9 feet left, 6 feet forward, 2 feet right), gives a final position of 7 feet to the left and 11 feet forward from the starting point.

Understanding Position and Direction

When considering movements such as being dragged 5 feet forward, 9 feet left, 6 feet forward again, and 2 feet back to the right, it's important to recognize the significance of both distance and direction. These types of problems typically fall under the category of vector addition and are a fundamental concept of mathematics, particularly in the study of geometry and physics at a more advanced level.

Imagine standing on a grid where moving forward and backward is along the y-axis, while moving right and left is along the x-axis. For each movement, you add or subtract the distances exactly as they were described to find your final position relative to the starting point.

Starting at the origin (0,0), moving 5 feet forward would be (0,5).

Moving 9 feet left would make your position (-9,5).

Then moving 6 feet forward adds to the y-coordinate leading to (-9,11).

Lastly, moving 2 feet to the right results in (-7,11).

Your final position is 7 feet to the left and 11 feet forward from the start. To understand your positional changes, it's essential to know both the magnitude and direction of each move.

The probable question may be:

When I was little, I used to play a game with my friends. One of us would lie down in a blanket and

get wrapped up like a big dumpling, then spun around and dragged some random direction. Then, we

stopped somewhere and the person inside had to guess where they were. Sometimes I would just

use how far I think I've traveled, because I didn't know the direction, and the fact that my house

wasn't very big, to guess right.

If I feel myself dragged 5 feet forward, 9 feet left, then 6 feet forward again, and 2 feet back to the

right.

User Libec
by
7.0k points