A particle of specific charge $\frac{\mathit{\text{q}}}{\mathit{\text{m}}}=\pi \mathrm{C} {\mathrm{kg}}^{-1}$ is projected from the origin towards positive x-axis with a velocity of $10 \mathrm{m} {\mathrm{s}}^{-1}$ in a uniform magnetic field $\overrightarrow{B}=-2 \hat{\text{k}} \mathrm{T}$. The velocity $\overrightarrow{v}$ of the particle after time $t=\frac{1}{12} \mathrm{s}$ will be (in $\mathrm{m} {\mathrm{s}}^{-1}$)