Uniform circular motion

Uniform circular motion

Since objects moving in a circular path are changing direction, they are also changing velocity, as a result they are?

1. accelerating
2. at rest
3. uniformly moving
4. non of the above

A child rides a carousel with a radius of 5.1m, that rotates at a rate of 2.2m/s. Calculate the magnitude of the centripetal acceleration of the child.

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What is the direction of the acceleration of an object in uniform circular motion?

1. Tangent to the circle
2. Opposite to the velocity
3. Away from the center of the circle
4. Towards the center of the circle

In uniform circular motion, which factor does not affect the centripetal acceleration?

1. Radius of the circle
2. Speed of the object
3. Mass of the object
4. Direction of motion

What happens to the centripetal acceleration if the speed of an object moving in a circle is doubled?

1. It remains the same.
2. It doubles.
3. It quadruples.
4. It halves.