ROTATIONAL MOTION

Why do internal forces not affect the center of mass trajectory?

• They are too weak
• They act slowly
• They cancel out in pairs due to Newton's third law
• They are random

In the lab frame, how is the velocity of a decay product determined?

• By multiplying mass
• By subtracting energies
• By vector addition of CM velocity and relative velocity
• By averaging speeds

What does c1 represent in the momentum equation Px = c1?

• Initial position
• Acceleration in x
• Constant value of x-component of momentum
• Energy in x-direction

How does the center of mass behave in an explosion in space?

• Stops
• Accelerates
• Moves with constant velocity
• Disappears

What is the main purpose of using scalar momentum equations?

• To increase complexity
• To ignore directions
• To analyze motion in each spatial direction independently
• To cancel forces