Lesson 23: Gravity and Friction
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Questions and Answers

What is mass according to Issac Newton?

  • The amount of matter determined by its speed and direction
  • The force of attraction between any two masses
  • The measure of the amount of matter in a body (correct)
  • The measure of volume in a body

    • What does gravity do to objects with mass?

  • Has no effect on objects with mass
  • Pulls objects with mass toward each other (correct)
  • Creates weightless conditions for objects
  • Pushes objects away from each other

    • Who discovered the principle of gravity?

  • Nicolaus Copernicus
  • Albert Einstein
  • Galileo Galilei
  • Sir Isaac Newton (correct)

    • What are everyday examples of gravity mentioned in the text?

    <p>Sitting on a chair, jumping on a trampoline, going on the swing</p> Signup and view all the answers

    What is the force that holds objects with mass to the Earth's surface?

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

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