What is the Instantaneous Velocity Question and How to Solve It?

AI Thread Summary
The discussion centers on solving a homework question related to instantaneous velocity. The user initially miscalculated the velocity due to a misunderstanding of the graph's details, mistaking the tip of the line for a different value. It was clarified that when interpreting graphs, especially with thick lines, one should read to the middle and use a ruler for accuracy. The importance of showing work in problem-solving was emphasized to facilitate better assistance. Overall, the conversation highlights common challenges in understanding instantaneous velocity and graph interpretation.
Jane W
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Homework Statement


I am having trouble with the last question my teacher gave me. I have attached a picture. It is about instantaneous velocity. I did the same thing for all the other questions?[/B]

Screen Shot 2014-09-25 at 7.50.10 PM.png


Homework Equations


average velocity = delta x / delta t

The Attempt at a Solution


I did 0-(-6)/(8-7) = 6[/B]
 
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I figured it out. Apparently the tip of the line is not on 6 but on 5. I think that is not very visible.
 
Well done :)
When graphs have a fat line, the pointy-bits can cover a lot of ground. Always read to the middle of the line - use a ruler if you can.
For the future - please show your working. That would make how you are thinking clear so we can best help you.
Don't worry about looking stupid - we have all done stupider things than you: we understand ;)
 
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