Are These Statements About Position Vs. Time Graph Correct?

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Homework Help Overview

The discussion revolves around the interpretation of a position vs. time graph and the correctness of various statements regarding the velocities at specific points on the graph. Participants are examining the relationship between the graph's slope and the object's velocity at different points.

Discussion Character

  • Exploratory, Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants share their interpretations of the statements regarding velocity at specific points and question the correctness of their own answers. Some seek clarification on how others arrived at their conclusions, particularly regarding the velocity at points 1 and 7.

Discussion Status

The discussion is ongoing, with participants expressing uncertainty about the correctness of their answers. Some have provided their reasoning but are open to further input and clarification from others. There is a recognition of differing interpretations, particularly concerning the distances and velocities at certain points.

Contextual Notes

Participants are working from a visual graph that is not included in the text, which may lead to varying interpretations based on individual analysis. There is also a mention of potential confusion regarding the distinction between distance and displacement.

~SPaRtaN~
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Homework Statement



http://img364.imageshack.us/my.php?image=90198228dt0.jpg
Image: http://img364.imageshack.us/my.php?image=90198228dt0.jpg

Which of the following statements are correct/incorrect?
1) The velocity is zero at point 4.
2) At point 6 the velocity is negative.
3) At point 3 the velocity is positive.
4) At points 1 and 7 the velocities are about the same.
5) At point 8 the object is farther from the origin than at any other numbered point.
6) At points 3 and 5 the object is the same distance from the origin.
7) At points 1 and 3 the object is on the positive side of the origin.

Homework Equations


Velocity is the SLOPE of the position-time graph.

The Attempt at a Solution


Tried 2-3 times but some of mine answers are wrong
Herez mine:
1 Incorrect
2 Incorrect
3 Incorrect
4 correct
5 Incorrect
6 Incorrect
7 correct
 
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~SPaRtaN~ said:

Homework Statement



http://img364.imageshack.us/my.php?image=90198228dt0.jpg
Image: http://img364.imageshack.us/my.php?image=90198228dt0.jpg

Which of the following statements are correct/incorrect?
1) The velocity is zero at point 4.
2) At point 6 the velocity is negative.
3) At point 3 the velocity is positive.
4) At points 1 and 7 the velocities are about the same.
5) At point 8 the object is farther from the origin than at any other numbered point.
6) At points 3 and 5 the object is the same distance from the origin.
7) At points 1 and 3 the object is on the positive side of the origin.


Homework Equations


Velocity is the SLOPE of the position-time graph.


The Attempt at a Solution


Tried 2-3 times but some of mine answers are wrong
Herez mine:
1 Incorrect
2 Incorrect
3 Incorrect
4 correct
5 Incorrect
6 Incorrect
7 correct

Maybe you can describe your thinking on 4) ? Not necessarily saying it's wrong, just want to know how you arrived at it.
 
^at both points velocity is increasing, it looks it is a constant increase in velocity...
actually i don't know may b i m wrong...but do u know the actual answers to it ?
 
~SPaRtaN~ said:
^at both points velocity is increasing, it looks it is a constant increase in velocity...
actually i don't know may b i m wrong...but do u know the actual answers to it ?

Sorry, if I confused you, as you had it right and I wanted to make sure you understood it.
 
Last edited:
^its ok dude...can i have ur views, what do u think, what could be the answers?
 
~SPaRtaN~ said:
^its ok dude...can i have ur views, what do u think, what could be the answers?

I thought your answers were correct.
 
^no some of em are not...and i don't know which ones
 
~SPaRtaN~ said:
^no some of em are not...and i don't know which ones

OK I looked again. And 6 looks like they may be at the same distance though not the same displacement, one being + and the other -.

I thought it was wrong last night and then forgot when I came back later.
 
please somebody here help me on this problem
 

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