ROTATIONAL MOTION

What is the main advantage of analyzing motion in the center of mass frame?

• It increases energy
• It reduces the complexity of the problem
• It eliminates time
• It changes mass

In the absence of external forces, what is the acceleration of the center of mass?

• Equal to g
• Infinite
• Zero
• Depends on mass

What determines the complexity of observed stellar trajectories?

• Mass of telescope
• Color of stars
• Reference frame used for observation
• Distance from Earth

What is the motion of individual stars in a binary system when CM is at rest?

• Linear motion
• Vibrational motion
• Circular motion about the center of mass
• No motion

In a two-particle system with zero total momentum, how do the particles move?

• Same direction with same speed
• Opposite directions with same speed
• In opposite directions with momenta inversely proportional to masses
• Perpendicular directions