Solve the equation vf = vi + at for acceleration

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Homework Help Overview

The discussion revolves around solving the equation vf = vi + at for acceleration, which is a topic in kinematics within physics. Participants are exploring the rearrangement of this equation and its implications in understanding acceleration.

Discussion Character

  • Mathematical reasoning, Assumption checking

Approaches and Questions Raised

  • The original poster seeks assistance in rearranging the equation to isolate acceleration. One participant suggests subtracting vi from both sides and dividing by time, while also noting the relationship between change in velocity and acceleration. Another participant raises a related question about examples of falling objects with and without air resistance.

Discussion Status

The discussion is active, with participants engaging in mathematical reasoning and exploring related concepts. Some guidance has been offered regarding the manipulation of the equation, but there is no explicit consensus on the final form or implications of the equation. Additional questions about real-world applications of the concepts are being explored.

Contextual Notes

Participants are considering the complexities of real-world scenarios, such as the effects of air resistance on falling objects, which introduces additional variables and assumptions into the discussion.

joykizz_16
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help plx!

hello..please help me..ihave a question related to physics..

here it is :
solve the equation vf = vi + at for acceleration. What is the equation you get?

plx help me..
 
Last edited by a moderator:
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Whatever you do to one side of the equation you do to the other.

vf = vi + at

subtract vi from both sides to get vf - vi = at

Divide both sides by ton a side note, vf - vi is the final minus the initial which gives you the change in velocity.

As you can see acceleration is basically the change in velocity over the change in time.
 
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ahh ... thank you so much bassplayer142 ... another question , give some examples of falling object for which air resistance cannot be ignored and can be ignored ...

please reply ... asap
 
Last edited:


In the real world there is no such thing as no air resistance unless the experiment is conducted in a huge vacuum. But in class and some practice, we just neglect air resistance as it would consist of many unknowns and some very advanced math. You would need to know the flow of air in every spot at any given time.
 

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