The position of a particle is given 

$\overrightarrow{r}=3t\widehat{\mathrm{i}}+2t^2\widehat{\mathrm{j}}+5\widehat{\mathrm{k}}$, where t is in seconds are r in metres velocity of particle at t = 1 s is :

$5{\mathrm{ms}}^{-1}\text{ at angle }{\tan }^{-1}\left(\frac{4}{3}\right)\text{ with }y\text{-axis }$

$7{\mathrm{ms}}^{-1}\text{ at angle }{\tan }^{-1}\left(\frac{3}{4}\right)\text{ with }y\text{-axis }$

$5{\mathrm{ms}}^{-1}\text{ at angle }{\tan }^{-1}\left(\frac{4}{3}\right)\text{ with }x\text{-axis }$

$7{\mathrm{ms}}^{-1}\text{ at angle }{\tan }^{-1}\left(\frac{3}{4}\right)\text{ with }x\text{-axis }$