ROTATIONAL MOTION

In the derivation of v = ω × r, what is OP equal to?

• OC - CP
• OC × CP
• OC + CP
• ω + r

What is the vector product ω × OC equal to when ω is along OC?

• ω OC
• ω + OC
• Zero vector
• ω × CP

Which of the following best describes angular displacement?

• Linear distance moved
• Time taken to rotate
• Number of rotations
• Angle through which a body rotates

What is the role of torque in rotational motion?

• It maintains constant speed
• It produces linear acceleration
• It measures energy
• It produces angular acceleration

Which of the following is true about the angular velocity vector in fixed-axis rotation?

• It changes direction continuously
• It becomes zero
• Its direction remains unchanged
• It reverses every second