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

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AI Thread Summary
The discussion centers on a speed and trajectory problem involving a given position vector equation. The original poster is struggling to solve the questions related to the equation, which includes terms for both x and y components. A user suggests taking the derivative of the position vector to find the velocity vector, but the original poster is still seeking assistance. The lack of clarity in the problem-solving process highlights the challenges faced when standard methods do not yield results. Further guidance is needed to effectively address the questions posed.
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What is not working?

The attachment reads -

\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}
 
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 \vec{r}(t) to get \vec{v}(t)? What did you get?
 

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