How to Solve an Old Speed/Trajectory Problem When Standard Methods Fail?

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Homework Help Overview

The discussion revolves around a speed and trajectory problem involving a position vector \(\vec{r}\) defined in terms of time, with participants seeking assistance in solving related questions that arise from the provided equations.

Discussion Character

  • Exploratory, Problem interpretation, Assumption checking

Approaches and Questions Raised

  • Participants are attempting to understand the implications of the position vector and its derivatives, specifically questioning the process of deriving the velocity vector from the position vector.

Discussion Status

The discussion is ongoing, with participants expressing difficulty in solving the posed questions and seeking clarification on the steps involved in the problem. Some guidance has been offered regarding the differentiation of the position vector.

Contextual Notes

There appears to be a lack of clarity regarding the specific questions that need to be addressed, as well as uncertainty about the effectiveness of the initial responses received in the thread.

HeLLz aNgeL
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What is not working?

The attachment reads -

[tex]\vec{r} = A (1 m/s)t\hat{x}\,+\,A[(1 m/s^3)t^3-6(1 m/s^2)t^2]\hat{y}[/tex]
 
yes, but i can't seem to solve the questions it asks :P
 
bump ... help please !
 
HeLLz aNgeL said:
bump ... help please !

Did you take the derivative of [tex]\vec{r}(t)[/tex] to get [tex]\vec{v}(t)[/tex]? What did you get?
 

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