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(A) In uniform circular motion,the acceleration has two components: radial (centripetal) and tangential.$1$. The radial component is given by $a_{r} =

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Radial component is constant,tangential component is not constant.

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(A) In uniform circular motion,the acceleration has two components: radial (centripetal) and tangential.$1$. The radial component is given by $a_{r} = r \omega^{2}$. Since the radius $r$ and angular velocity $\omega$ are constant,the magnitude of the radial acceleration is constant. However,its direction is always towards the center,which changes continuously.$2$. The tangential component $a_{t}$ is given by $a_{t} = r \alpha$. Since the speed is constant,the angular acceleration $\alpha = 0$,so $a_{t} = 0$. $A$ zero vector is constant in both magnitude and direction.$3$. If the question refers to the non-zero components,the radial component's magnitude is constant,but its direction changes. The tangential component is zero (constant).

For a particle moving in a circular path with constant speed,which component of its linear acceleration is constant and which component is not constant?

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