Motion In A Plane

$(6+2 t) \hat{\mathbf{i}}+(4+2 \sqrt{3 t}) \hat{\mathbf{j}}$

$(6+2 t) \hat{\mathbf{i}}+2 \sqrt{3} \hat{\mathbf{j}}$

$2 \hat{i}+2 \sqrt{3 \hat{j}}$

$2 \hat{\mathbf{i}}+2 \sqrt{3} \hat{\mathbf{k}}$