11th Grade Earth and Life Science: Gravity Lesson 3
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Questions and Answers

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?

  • 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?

  • 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?

    <p>An external force</p> Signup and view all the answers

    Which term describes the force exerted on an object by gravity when it falls?

    <p>Gravitational Force</p> Signup and view all the answers

    How does Newton explain why humans and animals can stay on Earth without being flung off due to its spinning motion?

    <p>Due to the Law of Inertia</p> Signup and view all the answers

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