ROTATIONAL MOTION

For fixed-axis rotation, how is angular acceleration expressed?

• α = dv/dt
• α = dθ/dt
• α = rω²
• α = dω/dt (scalar form)

How is angular acceleration defined in rotational dynamics?

• Rate of change of linear velocity
• Rate of change of position
• Rate of change of angular displacement
• Time rate of change of angular velocity

What is the implication of both magnitude and direction of ω changing?

• It stops rotating
• It moves linearly
• The motion is uniform
• The body undergoes general 3D rotational motion

In rotational motion, what is the consequence of ω being constant in direction?

• Body translates
• Rotation stops
• Rotation occurs about a fixed axis
• Angular acceleration increases

What determines the direction of the linear velocity vector in rotation?

• The dot product of ω and r
• The sum of ω and r
• The difference of ω and r
• The cross product of ω and r