How to find an average acceleration using an average velocity?

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Homework Help Overview

The discussion revolves around calculating average acceleration using average velocity, specifically in the context of a problem involving motion over a distance of 10.0 m. The original poster has previously calculated an average velocity and is seeking guidance on how to proceed without knowing the final velocity.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants are questioning the relationship between average velocity and average acceleration, particularly in the absence of final velocity. There are discussions about whether multiplying average velocity by time is appropriate and considerations about the definitions of average over time versus distance.

Discussion Status

The discussion is ongoing, with participants seeking clarification on the full problem statement and the necessary data to proceed. Some have suggested alternative interpretations of average velocity, but there is no clear consensus on how to approach the calculation of average acceleration.

Contextual Notes

There is a noted requirement for the full problem statement to provide adequate context for the calculations, and participants emphasize the importance of understanding the distinctions between different types of averages in motion.

Cacti
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Homework Statement
Calculate the average acceleration for each member over the first 10.0 m.
Relevant Equations
None given
I calculated the average velocity in a previous problem and got 1.146788991m/s over a time of 8.72s. I know I can’t use a_ave=(Vf-Vi)/(Tf-Ti) because I don’t know the final velocity and have no way to find it. Do I multiply average velocity by time?
 
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Cacti said:
Homework Statement: Calculate the average acceleration for each member over the first 10.0 m.
Homework Equations: None given

I calculated the average velocity in a previous problem and got 1.146788991m/s over a time of 8.72s. I know I can’t use a_ave=(Vf-Vi)/(Tf-Ti) because I don’t know the final velocity and have no way to find it. Do I multiply average velocity by time?
Please post the full problem so that we can see what data you have available.
 
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The full problem statement is necessary. For one thing, there is a difference between "average" over time versus "average" over distance.
 
Cacti said:
Do I multiply average velocity by time?
Not if you are looking for something that has dimensions of acceleration.
 
Maybe average velocity= (Vf - Vi)/2?
 
Cacti said:
Homework Statement: Calculate the average acceleration for each member over the first 10.0 m.
Homework Equations: None given

I calculated the average velocity in a previous problem and got 1.146788991m/s over a time of 8.72s. I know I can’t use a_ave=(Vf-Vi)/(Tf-Ti) because I don’t know the final velocity and have no way to find it. Do I multiply average velocity by time?

The rule of the HW forum is that you post the full statement of the problem, not just snippets of it.

Zz.
 

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