Conservation of Momentum in Collisions
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Questions and Answers

According to Newton's second law, the net force on an object is equal to its mass times its acceleration.

  • False
  • True (correct)

    • What is momentum?

  • The net force on an object
  • The change in mass times velocity over time
  • The derivative of mass times velocity with respect to time
  • The quantity of motion of an object (correct)

    • What qualities need to be taken into account to understand collisions?

  • Mass and acceleration
  • Force and time
  • Mass and velocity
  • Momentum and impulse (correct)

    • Which of the following best describes a perfectly inelastic collision?

    <p>A collision where objects stick together</p> Signup and view all the answers

    What is the center of mass?

    <p>The average position of all the mass in a system</p> Signup and view all the answers

    How can the center of mass be calculated?

    <p>By measuring the distance from the starting point to each individual mass</p> Signup and view all the answers

    Which of the following best describes momentum?

    <p>The product of an object's mass and velocity</p> Signup and view all the answers

    Which of the following is true about elastic collisions?

    <p>Kinetic energy is conserved</p> Signup and view all the answers

    What is impulse?

    <p>The change in an object's momentum</p> Signup and view all the answers

    According to the information given, what is the position of the center of mass of the system?

    <p>2 meters</p> Signup and view all the answers

    What is the mass of the 4 kilogram ball?

    <p>4 kilograms</p> Signup and view all the answers

    What is the mass of the 2 kilogram ball?

    <p>2 kilograms</p> Signup and view all the answers

    What is the position of the 4 kilogram ball?

    <p>3 meters</p> Signup and view all the answers

    What is the total mass of the system?

    <p>6 kilograms</p> Signup and view all the answers

    What is the sum of the masses times their positions for the system?

    <p>12 kilogram-meters</p> Signup and view all the answers

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