Gravity and Planetary Motion
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Questions and Answers

What would happen if there was no gravitational force between the Earth and the Moon?

  • The Moon's speed would increase
  • The Moon would move away from the Earth (correct)
  • The Moon would collide with the Earth
  • The Moon would stop orbiting the Earth

    • What force is responsible for keeping the planets in orbit around the sun?

  • Electromagnetic force
  • Weak nuclear force
  • Strong nuclear force
  • Gravitational force (correct)

    • Why do objects fall towards the Earth when they are dropped?

  • Gravitational force from the Earth (correct)
  • Frictional force from the Earth
  • Magnetic force from the Earth
  • Repulsive force from the Earth

    • Which factor determines the magnitude of gravitational force between two objects?

    <p>Distance between the objects and their masses</p> Signup and view all the answers

    Which concept explains why an object in orbit around the Earth experiences apparent weightlessness?

    <p>Centripetal force balances gravitational force</p> Signup and view all the answers

    What happens to the gravitational force between two objects if the distance between them is doubled?

    <p>It becomes one-fourth of the original force</p> Signup and view all the answers

    Objects with more ______ have a greater gravitational force

    <p>mass</p> Signup and view all the answers

    Gravitational force is stronger when objects are closer together due to the inverse square law of ______

    <p>distance</p> Signup and view all the answers

    The acceleration due to gravity on Earth's surface is approximately 9.8 meters per second squared, denoted by the symbol ______

    <p>g</p> Signup and view all the answers

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