ROTATIONAL MOTION Quiz

• Because they are too small
• Because they are random
• Because their vector sum is zero due to Newton’s third law
• Because they are invisible

• Rotation is eliminated
• Internal energy vanishes
• An extended body responds to external forces as if all mass were concentrated at the centre of mass
• Gravity becomes zero

• It moves forward
• It moves backward
• It oscillates
• It remains stationary if no external horizontal force acts

• It has the same shape
• It rotates at the same rate
• It moves under external forces as if all mass were concentrated there
• It has zero energy

• They have no effect
• They stabilize momentum
• They are solely responsible for changing the total momentum
• They only affect individual particles