Angular Motion

3. If the angular velocity of a rotating object changes, points on the rim experience _______ acceleration in addition to centripetal acceleration.
4. A rigid object is defined as one whose ______ does not change under rotation.
6. When solving for the angular acceleration of a wheel increasing uniformly in speed, the angular acceleration formula requires the initial and final angular velocities to be expressed in _______ per second.
9. The quantity that remains constant for all points in a rigid body rotating about a fixed axis, regardless of their distance from the axis, is the _______ velocity.
10. The SI unit for angular displacement is the _______, which is a dimensionless measurement derived from the ratio of arc length to radius.

1. The angular velocity, denoted by the Greek letter ______, is measured in radians per second.
2. The angle in radians is found by dividing the arc length by the ______ from the axis of rotation.
3. The average angular velocity is defined as total angular displacement divided by _______;
5. The formula θ = θ0 + ωt + ½αt² is used when an object undergoes ______ angular acceleration.
7. When describing the motion of a rigid body about a fixed axis, every point on a line through the axis moves through the same _______ in the same time interval.
8. The angular acceleration, represented by the Greek letter ______, is defined as the rate of change of angular velocity with respect to time.