The video introduces Newton's Cradle, a device demonstrating momentum and energy conservation. It explains the physics principles of elastic collisions and the conservation laws. In a vacuum, Newton's Cradle would operate indefinitely due to the absence of friction. The video also highlights the pendulum's principles and its applications in modern devices like seismographs and catapults.

What is Newton's Cradle commonly used as?

• A scientific instrument

• An executive toy

• A children's toy

• A musical instrument

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What principle does Newton's Cradle demonstrate?

• Law of gravity

• Electromagnetic induction

• Conservation of momentum and energy

• Theory of relativity

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Who is Newton's Cradle named after?

• Nikola Tesla

• Isaac Newton

• Galileo Galilei

• Albert Einstein

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What type of collision is exemplified by Newton's Cradle?

• Partial collision

• Perfect collision

• Elastic collision

• Inelastic collision

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What happens to the system's gravitational potential energy when the first ball is raised?

• It increases

• It remains constant

• It decreases

• It becomes zero

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What would happen to the kinetic energy as the ball swings past the equilibrium position?

• It increases

• It remains constant

• It decreases

• It becomes zero

In a vacuum, how long would Newton's Cradle ideally run?

• It would not work

• Indefinitely

• For a few hours

• For a few minutes

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What is the relationship between the initial force and the resulting force in Newton's Cradle?

• They are equal and opposite

• There is no relationship

• The initial force is greater

• The resulting force is greater

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Does the number of balls set in motion affect the time it takes to reach equilibrium in Newton's Cradle?

• It depends on the material of the balls

• No, it remains the same

• Yes, it decreases the time

• Yes, it increases the time

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What modern-day device uses the same principle as Newton's Cradle?

• Voltmeter

• Barometer

• Thermometer

• Seismograph

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