Physics: Understanding Newton's Laws of Motion
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Questions and Answers

What is Newton's first law of motion mainly about?

  • Velocity
  • Forces
  • Inertia (correct)
  • Acceleration
  • How is Newton's first law often stated?

  • "An object in motion will remain in motion, and an object at rest will remain at rest, unless acted upon by a force." (correct)
  • "An object in motion will come to a stop, and an object at rest will remain at rest."
  • "An object will accelerate regardless of external forces."
  • "An object will change direction without any external influence."
  • According to Newton's first law, why does an object need a net force to change its motion?

  • Due to its mass
  • Due to its velocity
  • Due to inertia (correct)
  • Due to gravitational pull
  • Which physicist introduced the three laws of motion in the book Principia published in 1687?

    <p>Isaac Newton</p> Signup and view all the answers

    Which property of an object makes it harder to move and stop, according to the text?

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

    What is the equation given in the text to represent Newton's second law?

    <p>F(force) = ma</p> Signup and view all the answers

    What term is used in the text to describe the state when all forces acting on an object are balanced?

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

    Which force is commonly responsible for making objects move when unbalanced, as described in the text?

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

    What is the value of acceleration due to gravity mentioned in the text?

    <p>$9.81 m/s$</p> Signup and view all the answers

    How is weight commonly measured, as described in the text?

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

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