ROTATIONAL MOTION MCQ Quiz: GKFix - Bridge of Knowledge - Page 501

Question 2501

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What happens to the centre of mass when a system undergoes phase change?

It stops
It accelerates
Its motion depends only on external forces, not on phase
It evaporates

Question 2502

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How is the centre of mass used in astronomy?

To measure brightness
To change orbits
To locate the balance point of celestial systems
To create black holes

Question 2503

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What is the effect of a constant external force on the centre of mass velocity?

It remains constant
It decreases exponentially
It changes linearly with time
It becomes zero

Question 2504

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How does the centre of mass help in accident reconstruction?

To paint the vehicles
To reduce insurance
To determine vehicle motion from impact dynamics
To improve music systems

Question 2505

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What is the role of the centre of mass in planetary motion?

It stops the motion
It increases gravity
It defines the common point about which bodies orbit in a system
It creates light