SOLUTION: Emma walks to her friends hour 190 meters North. They then walk to the park 30 m S. What is Emma's total displacement?

Algebra.Com
Question 1155513: Emma walks to her friends hour 190 meters North. They then walk to the park 30 m S. What is Emma's total displacement?

Found 3 solutions by josgarithmetic, Alan3354, ikleyn:
Answer by josgarithmetic(39614)   (Show Source): You can put this solution on YOUR website!
160 meters north
Answer by Alan3354(69443)   (Show Source): You can put this solution on YOUR website!
Emma walks to her friends hour 190 meters North. They then walk to the park 30 m S. What is Emma's total displacement?
---------------
Depends.
Is it 30 m South of her friend's place?
Or 30 m South of Emma's starting point?
Or, is the park 30 m South of ??? what?
Answer by ikleyn(52756)   (Show Source): You can put this solution on YOUR website!
.
Emma walks to her friends 190 meters North. They then walk to the park 30 m S. What is Emma's total displacement?
~~~~~~~~~~~~~~~~~~~~~ 



By the definition, displacement is the distance between the starting and ending point.


In this case, this distance is 190 - 30 = 160 meters.


ANSWER.  The displacement is 160 meters in this case.

-------------

Do not miss the displacement with the traveled distance -- these notions/conceptions are different.

The goal of this problem and the goal of my post is to explain this difference to you.



RELATED QUESTIONS

Holly decides to go see a movie with her friend. On her way to the movie, Holly walks 550 (answered by ikleyn)
Holly decides to go see a movie with her friend. On her way to the movie, Holly walks 550 (answered by solver91311)
Holly decides to go see a movie with her friend. On her way to the movie, Holly walks 550 (answered by solver91311)
Emma asks Leo to find her age. She says if she adds 7 to her age and divides by 3, the (answered by josmiceli)
emma walks to school at a speed of 3 miles per hour. if it takes her 20 minutes to walk... (answered by lenny460)
An ant walks 3.0 meters due west and then 6.0 meters due north. The magnitude of the... (answered by ikleyn)
George walks to a friend's house. He walks 750 meters North, then realizes he walked too... (answered by josgarithmetic,ikleyn,greenestamps)
after walking 50 m due to north from campsite, a hiker then walks 65 m east. A. what is... (answered by stanbon)
George walks to a friend’s house. He walks 750 meters North, then realizes he walked too... (answered by JulietG)