An object moves in such a way that its position (in meters) as a function of time (in seconds) i...

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An object moves in such a way that its position (in meters) as a function of time (in seconds) is \( \vec{r}=\hat{\mathrm{i}}+3 t^{2} \hat{\mathrm{j}}+t \hat{\mathrm{k}} \). Give expressions for the velocity of the object and the acceleration of the object as functions of time.
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