ROTATIONAL MOTION Quiz

• It determines the velocity directly
• It has no effect
• It determines the acceleration of the centre of mass according to F_ext = MA
• It only affects rotation

• It stops immediately
• It moves randomly
• It flies upward
• It continues along the original parabolic path

• Because internal forces are too weak
• Because they act only within molecules
• Because internal forces cancel out in pairs due to Newton’s third law
• Because they are balanced by friction

• Mass of the first particle
• Reduced mass of the system
• Total mass of the system
• Average mass per particle

• It is the arithmetic mean of all accelerations
• It is always zero
• It is the mass-weighted average of the accelerations of all particles
• It depends only on the heaviest particle