Which of Juliette's statements is not a true statement about a position vs. time graph?

1- "A steeper slope means a higher average velocity (faster motion)."

2- "A horizontal line has zero slope. Therefore, a horizontal line on the position vs. time graph means that the average velocity is zero."

3- "The sign of the slope gives the sign of the average velocity and, therefore, the direction of motion."

4- "A horizontal line has infinite slope. Therefore, a horizontal line on the position vs. time graph means that the average velocity is zero."

Question

Which of Juliette's statements is not a true statement about a position vs. time graph?

1- "A steeper slope means a higher average velocity (faster motion)."

2- "A horizontal line has zero slope. Therefore, a horizontal line on the position vs. time graph means that the average velocity is zero."    

3- "The sign of the slope gives the sign of the average velocity and, therefore, the direction of motion."

4- "A horizontal line has infinite slope. Therefore, a horizontal line on the position vs. time graph means that the average velocity is zero."

blackstreet23 · Answer

@Shalante

blackstreet23 · Answer

I am doing my physics homework right now

blackstreet23 · Answer

I know the 4th one makes no sense. I mean a horizontal slope does not mean that it is infinite

blackstreet23 · Answer

it means 0 slope. But some others make no sense either

blackstreet23 · Answer

@abhisar

blackstreet23 · Answer

But could you explain to me why it could not be the other ones?  It is just they are confusing :/

blackstreet23 · Answer

Did you erase it?

anonymous · Answer

I got confused.
I did not read it correctly.

blackstreet23 · Answer

ohh ok no problem :)

blackstreet23 · Answer

so that one is false too?

blackstreet23 · Answer

It asks me for the statement that is not true

anonymous · Answer

Oh no wonder I was confused because I know that A and B are true.
C might be true.

anonymous · Answer

D is obviously false.
A horizontal line always have a slope of zero.

anonymous · Answer

The question should be phrased "Which of Julitte statement is false?" instead

anonymous · Answer

I saw a true lol and I thought it was asking for true.

blackstreet23 · Answer

So D is false?

anonymous · Answer

Yea thats what I said.

blackstreet23 · Answer

yuhu! yeah that was the correct one !

blackstreet23 · Answer

but could you explain to me why the other ones are false?

blackstreet23 · Answer

i mean true, sorry

anonymous · Answer

Yes.

"The sign of the slope gives the sign of the average velocity and, therefore, the direction of motion."
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anonymous · Answer

Average velocity formula vf-vi/2
If slope is decreasing vf would be less than vi.
A (lesser number - greater number)/2= negative number
Slop decreasing is a negative number and so does the average  velocity.

anonymous · Answer

|dw:1442024673281:dw|
V=d/t
V=0/10
V=0

abhisar · Answer

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abhisar · Answer

When the the curve is horizontal angle x=0 and hence tan 0 = 0. Therefore velocity which is equal to the slope of position-time graph is also zero.

blackstreet23 · Answer

Thanks a lot to take the time to answer me!