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

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SUMMARY

The discussion centers on solving the Instantaneous Velocity Question, specifically addressing a student's confusion regarding the calculation of instantaneous velocity from a graph. The student initially miscalculated the instantaneous velocity as 6, but later realized the correct value is 5 due to the graphical representation. Key advice includes using a ruler for clarity when interpreting graphs and ensuring to show all working steps for better assistance in problem-solving.

PREREQUISITES
  • Understanding of instantaneous velocity and its calculation
  • Familiarity with graph interpretation techniques
  • Knowledge of basic kinematic equations, specifically average velocity
  • Ability to read and analyze graphical data accurately
NEXT STEPS
  • Study the concept of instantaneous velocity in calculus
  • Learn how to accurately interpret graphs in physics
  • Practice using rulers and other tools for precise graph reading
  • Review common mistakes in calculating average and instantaneous velocities
USEFUL FOR

This discussion is beneficial for students studying physics, particularly those grappling with concepts of velocity and graph interpretation, as well as educators looking for effective teaching strategies in kinematics.

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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