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Questions and Answers
What did Sir Isaac Newton discover about gravity?
What did Sir Isaac Newton discover about gravity?
- It is not a force but an illusion.
- It only causes apples to fall from trees.
- It is only the attraction between objects and the Earth.
- It exists between all objects in the universe. (correct)
Which of Newton's laws states that every object will remain at rest or in uniform motion unless acted upon by an external force?
Which of Newton's laws states that every object will remain at rest or in uniform motion unless acted upon by an external force?
- Law of Universal Gravitation
- Law of Acceleration
- Law of Inertia (correct)
- Law of Action-Reaction
What is the relationship between force, mass, and acceleration according to Newton's second law?
What is the relationship between force, mass, and acceleration according to Newton's second law?
- Force is equal to mass divided by acceleration.
- Force is inversely proportional to mass and acceleration.
- Force is directly proportional to mass and acceleration.
- Force is equal to the product of mass and acceleration. (correct)
In the context of gravity, what did Newton realize was necessary to change an object's speed or direction of movement?
In the context of gravity, what did Newton realize was necessary to change an object's speed or direction of movement?
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Which term describes the force exerted on an object by gravity when it falls?
Which term describes the force exerted on an object by gravity when it falls?
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How does Newton explain why humans and animals can stay on Earth without being flung off due to its spinning motion?
How does Newton explain why humans and animals can stay on Earth without being flung off due to its spinning motion?
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