U3 Videos FP 6.1.13

When an object undergoes uniform angular acceleration, causing it to speed up, what happens to the magnitude of the tangential velocities of points on its surface?

• They remain constant.

• They increase.

• They decrease.

• They become zero.

For an object undergoing rotational motion, how does the magnitude of tangential velocity relate to the radius of the circular path for a given angular velocity?

• It is inversely proportional to the radius.

• It is directly proportional to the square of the radius.

• It is directly proportional to the radius.

• It is independent of the radius.

What is the tangential acceleration of any point on a rotating object when it is moving at a constant angular velocity?

• It is constant and non-zero.

• It is increasing.

• It is zero.

• It is decreasing.

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In circular motion, if an object is uniformly slowing down, what is the directional relationship between its tangential velocity and tangential acceleration vectors?

• They are in the same direction.

• They are in opposite directions.

• They are perpendicular to each other.

• The acceleration is zero.