### Multiple Choice

#### 6.1 Angle of Rotation and Angular Velocity

What is 1 radian approximately in degrees?

- 57.3°
- 360°
*π*°- 2
*π*°

If the following objects are spinning at the same angular velocities, the edge of which one would have the highest speed?

- Mini CD
- Regular CD
- Vinyl record

#### 6.2 Uniform Circular Motion

Which of these quantities is constant in uniform circular motion?

- Speed
- Velocity
- Acceleration
- Displacement

Which of these quantities impact centripetal force?

- Mass and speed only
- Mass and radius only
- Speed and radius only
- Mass, speed, and radius all impact centripetal force

An increase in the magnitude of which of these quantities causes a reduction in centripetal force?

- Mass
- Radius of curvature
- Speed

#### 6.3 Rotational Motion

Which of these quantities is not described by the kinematics of rotational motion?

- Rotation angle
- Angular acceleration
- Centripetal force
- Angular velocity

In the equation $$\tau \text{=}rF\text{sin}\theta $$, what is *F*?

- Linear force
- Centripetal force
- Angular force