Determine the Magnitude of the instantaneous Velocity

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Homework Help Overview

The problem involves determining the magnitude of instantaneous velocity at a specific time, T=5s, using a given position function x=AT^2 + B, where A and B are constants. The context is rooted in kinematics and calculus.

Discussion Character

  • Exploratory, Conceptual clarification

Approaches and Questions Raised

  • The original poster expresses uncertainty about finding the magnitude of instantaneous velocity and requests a breakdown of the steps involved. Participants inquire about the poster's understanding of the relationship between position and velocity, suggesting a need for conceptual clarification.

Discussion Status

The discussion is ongoing, with participants attempting to guide the original poster towards understanding fundamental concepts related to position and velocity. There is a recognition of the need for the poster to revisit foundational calculus concepts, but no consensus or resolution has been reached.

Contextual Notes

The original poster indicates a gap in their understanding due to a significant time away from academic study, which may affect their grasp of the material.

Chris Carney
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Homework Statement


Determine the Magnitude of the instantaneous velocity at T=5s
Function is x=AT^2 + B
A=2.1m/s^2
B=2.8 M

Homework Equations


The previous questions answered on this problem are:
AVG Velocity is 16.8
Displacement is 33.6 from 3s to 5s

The Attempt at a Solution


I'm not sure how to find either magnitude or instantaneous velocity. I need it broken down to the most basic steps to understand.
 
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Do you understand what the relationship is between position and velocity? Have you taken calculus?
 
I took calc and calc 2 about 4 years ago, I passed with A's but left school on military orders and have just gotten back into school. I forgot a lot of what I learned then.
 
so, do you understand what the relationship is between position and velocity?
 
phinds said:
so, do you understand what the relationship is between position and velocity?
No, no I do not.
 
Chris Carney said:
No, no I do not.

Well, do you think maybe my repeatedly asking you about it is a hint to look it up?

I'm not trying to give you a hard time here, but part of what we do is try to help people learn how to get answers on their own, not spoon-feed answers. The relationship between position and velocity is extremely basic and one of the things that is generally brought up early in calculus so you really should study it a bit if you want to understand this kind of problem.
 

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