Rotational Kinematics

A rod is pivoted about its center and initially rotates at 2.0 rad/s. It increases its angular velocity to 14 rad/s in 3.0s. What is its angular acceleration during the 3.0 period?

• 2 rad/s²

• 4 rad/s²

• 6 rad/s²

• 8 rad/s²

A rod is pivoted about its center and initially rotates at 2.0 rad/s. It increases its angular velocity to 14 rad/s in 3.0s. Calculate its angular displacement during the 3.0s period.

• 2 rad

• 3 rad

• 12 rad

• 24 rad

Which of the following is not a unit of angular velocity?

• cycles per second

• radians per second

• revolutions per minute

• meters per second

Klyde's angular velocity is

• the same as Bonnie's

• twice Bonnie's

• half of Bonnie's

• 1/4 Bonnie's

Who has the larger linear (tangential) velocity?

• Klyde

• Bonnie

• Same

• both zero

Who has the larger centripetal acceleration?

• Klyde

• Bonnie

• Same

• Both zero

Ten revolutions is a measurement of __________

• angular velocity

• angular acceleration

• angular displacement

• angular speed

Four rotations per minute is a measurement of ________

• angular velocity

• angular acceleration

• time period

• angular displacement

Which type of acceleration is defined as the rate of change of angular velocity?

• tangential acceleration

• total acceleration

• centripetal acceleration

• angular acceleration

Which type of acceleration causes an object to change its speed only?

• angular acceleration

• tangential acceleration

• centripetal acceleration

• total acceleration