Assertion: If the velocity and acceleration of a particle in circular motion at an…

PHYSICS · Subjective · CBSE · Physics · Motion in a Plane · Motion in a Plane

Problem

Assertion: If the velocity and acceleration of a particle in circular motion at an instant are

\mathbf{v}=2\hat{i}\,\mathrm{m\,s^{-1}}

and

\mathbf{a}=(-\hat{i}+2\hat{j})\,\mathrm{m\,s^{-2}}

, respectively, then the radius of the circle is

2\,\mathrm{m}

. Reason: The speed of the particle is decreasing at a rate of

1\,\mathrm{m\,s^{-2}}