Physics - Circular Motion Question with Solution | TestHub

The velocity and acceleration vectors of a particle undergoing circular motion are $\overrightarrow{\mathrm{v}}=2\hat{\mathrm{i}}\mathrm{m}/\mathrm{s}$ and $\overrightarrow{\mathrm{a}}=2\hat{\mathrm{i}}+4\hat{\mathrm{j}}\mathrm{m}/{\mathrm{s}}^2$ respectively at an instant of time. The radius of the circle is -