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Uniform Circular Motion Quiz

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$\vec{a}_r = -\frac{v^2}{r}\hat{r}$

$\vec{a}_r = -\omega^2 \vec{r}$ (correct)

$\vec{a}_r = \omega^2 \vec{r}$

$\vec{a}_r = \frac{v^2}{r}\hat{r}$

Angular velocity and linear velocity

Position vector and radius

Angular velocity and position vector (correct)

Linear velocity and radius

$a = -\frac{v^2}{r}$

$a = -\omega^2 r$

$a = \omega^2 r$ (correct)

$a = \frac{v^2}{r}$

<p>Towards the center of the circular motion</p> Signup and view all the answers

The expression for centripetal or radial acceleration in uniform circular motion is a = v²/r, where a is the acceleration, v is the velocity, and r is the radius of the circular path.
The acceleration in uniform circular motion depends on velocity and radius of the circular path.
The expression for the magnitude of centripetal acceleration in uniform circular motion is a = v²/r.
The centripetal acceleration is directed towards the center of the circular path, meaning it is always directed radially inward.