ROTATIONAL MOTION

What is the significance of the center of mass in rotational motion?

• It stops rotation
• It eliminates rotation
• It rotates fastest
• It moves as if all external forces act on it

How is the total momentum affected when two particles collide and stick together?

• It doubles
• It halves
• It becomes zero
• It remains the same if no external force acts

What is the effect of a constant external force on the center of mass?

• It causes deceleration
• It has no effect
• It stops the motion
• It causes constant acceleration

Can the center of mass be located outside the physical body?

• No, never
• Only in liquids
• Only in gases
• Yes, in certain shapes like a ring or hollow object

What happens to the momentum of a system during a collision where no external forces act?

• Momentum is lost
• Momentum increases
• Momentum becomes zero
• Total momentum remains unchanged