ROTATIONAL MOTION Quiz

• It determines linear speed
• It measures torque
• It determines the direction of the vector resulting from r × p
• It calculates kinetic energy

• Because they don't rotate
• Because angular velocity is zero
• Because contributions from diametrically opposite particles cancel
• Because moment of inertia is zero

• Only the direction of velocity
• The cross product of position and momentum vectors
• Mass of the particle
• Distance from axis

• Parallel to velocity
• Parallel to the axis
• It is perpendicular to the axis of rotation
• Along the axis

• Radially outward
• Tangential to motion
• Along the fixed axis of rotation
• Opposite to gravity