ROTATIONAL MOTION

In the context of center of mass motion, what does 'M' represent in the equation P = MV?

• Mass of the largest particle
• Average mass of particles
• Mass of the center of mass itself
• Total mass of the system

What is the condition for the conservation of linear momentum in a system of particles?

• Net internal force is zero
• Only gravity acts
• No motion inside the system
• Net external force is zero

If the total external force on a system is zero, what can be said about the acceleration of the center of mass?

• It increases
• It decreases
• It oscillates
• It is zero

Which of the following equations represents the total momentum of a system of particles?

• P = (m1 + m2 + ... + mn)(v1 + v2 + ... + vn)
• P = m1v2 + m2v1 + ... + mnvn-1
• P = average of all velocities times total mass
• P = m1v1 + m2v2 + ... + mnvn

What happens to the center of mass of a system during an explosion in mid-air?

• It moves upward
• It drops straight down
• It becomes stationary
• It continues along the original trajectory