The position of a particle is given by $\overrightarrow{\mathrm{r} }= \left(3.0\mathrm{t} \hat{\mathrm{i}} - 2.0{\mathrm{t}}^2 \hat{\mathrm{j}} +4.0 \hat{\mathrm{k}}\right) \mathrm{m}$ where t is in seconds and the coefficients have the proper units for r to be in meters. The magnitude and direction of $\overrightarrow{\mathrm{v}\left(\mathrm{t}\right)}$ at t = 1.0 s are:

1.  4 m/s at ${53}^o$ with x-axis

2.  4 m/s at ${37}^o$ with x-axis

3.  5 m/s at ${53}^o$ with y-axis

4.  5 m/s at ${53}^o$ with x-axis