### Extended Response

## 6.1 Angle of Rotation and Angular Velocity

What happens to tangential velocity as the radius of an object increases provided the angular velocity remains the same?

- It increases because tangential velocity is directly proportional to the radius.
- It increases because tangential velocity is inversely proportional to the radius.
- It decreases because tangential velocity is directly proportional to the radius.
- It decreases because tangential velocity is inversely proportional to the radius.

## 6.2 Uniform Circular Motion

An object is in uniform circular motion. Suppose the centripetal force was removed. In which direction would the object now travel?

- In the direction of the centripetal force
- In the direction opposite to the direction of the centripetal force
- In the direction of the tangential velocity
- In the direction opposite to the direction of the tangential velocity

## 6.3 Rotational Motion

Why do tornadoes produce more wind speed at the bottom of the funnel?

- Wind speed is greater at the bottom because rate of rotation increases as the radius increases.
- Wind speed is greater at the bottom because rate of rotation increases as the radius decreases.
- Wind speed is greater at the bottom because rate of rotation decreases as the radius increases.
- Wind speed is greater at the bottom because rate of rotation decreases as the radius increases.

When will an object continue spinning at the same angular velocity?

- When net torque acting on it is zero
- When net torque acting on it is non zero
- When angular acceleration is positive
- When angular acceleration is negative