Linear and Angular Kinematics

What is angular displacement?

• the sum of all angular changes undergone by a rotating body

• change in angular position

• the rate of change in angular position

• the rate of change in angular velocity

Which of the following units can be use to measure angles?

(select all that apply)

• radian

• revolution

• newton

• degrees

What is angular acceleration?

• the sum of all angular changes undergone by a rotating body

• change in angular position

• the rate of change in angular position

• the rate of change in angular velocity

5. Which of the following is referred to as the "quantity of angular motion" possessed by a body?

• angular displacement

• angular velocity

• angular acceleration

• angular momentum

Centripetal force is related to which of the following?

• radial acceleration

• tangetial acceleration

• both A and B

• none of the above

In one revolution there are?

• I radian

• 2π radian

• 2 radian

• 4 radian

In a rotational motion of rigid body, all particles move with

• same linear velocity and same  angular velocity

• same linear velocity and different angular velocity

• different linear velocities and same angular velocities

• different linear velocities and different angular velocities

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

• Rotation angle

• Angular acceleration

• Centripetal force

• Angular velocity

As the angular velocity of an object increases, what happens to the linear velocity of a point on that object?

• It increases, because linear velocity is directly proportional to angular velocity.

• It increases, because linear velocity is inversely proportional to angular velocity

• It decreases, because linear velocity is directly proportional to angular velocity

• It decreases, because linear velocity is inversely proportional to angular velocity

A construction worker is worried about applying too much torque to a bolt using his wrench. What could he do to reduce his torque on the bolt?

• Increase the length of the wrench

• Increase the force on wrench

• Reduce the length of the wrench

• Reduce the friction between the bolt and wrench