Segments' Gravity and Center of Mass Quiz
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Questions and Answers

According to Newton's First Law of Motion, what will happen to a body at rest when no external force acts upon it?

  • It will remain at rest. (correct)
  • It will accelerate.
  • It will start moving.
  • It will move at constant velocity.
  • What is the condition for an object to be in dynamic equilibrium?

  • Moving at constant velocity.
  • Remaining stationary.
  • Acted upon by unbalanced forces.
  • Acted upon by balanced forces. (correct)
  • In Newton's Second Law of Motion, what is the relationship between acceleration and the net force acting on a body?

  • Acceleration is directly proportional to the net force. (correct)
  • Acceleration is inversely proportional to the net force.
  • Acceleration is proportional to the square of the net force.
  • Acceleration is unrelated to the net force.
  • What type of equilibrium occurs when an object is at rest and acted upon by balanced forces?

    <p>Static equilibrium</p> Signup and view all the answers

    What does Newton's Third Law of Motion state about action and reaction?

    <p>Action and reaction forces are always equal in magnitude and opposite in direction.</p> Signup and view all the answers

    Which law of motion describes the scenario where a body in uniform motion continues moving at that speed unless acted upon by an external force?

    <p>Newton's First Law</p> Signup and view all the answers

    Which muscle can generate more force among the tibialis posterior, rectus femoris, and deltoid muscles?

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

    What is the anatomical term for motion that occurs in a circle around an axis?

    <p>Rotatory motion</p> Signup and view all the answers

    What is the term used to describe the number of planes within a joint that moves?

    <p>Degrees of freedom</p> Signup and view all the answers

    Which axis of rotation is associated with lateral rotation and medial rotation?

    <p>Mediolateral / x axis</p> Signup and view all the answers

    Which type of arthrokinematics involves spin movement at a joint?

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

    In which cardinal plane does abduction and adduction occur?

    <p>Frontal / Coronal / XY Plane</p> Signup and view all the answers

    What type of forces always act on the same segment, in the same plane, and in the same line?

    <p>Linear force systems</p> Signup and view all the answers

    Which force leads to the separation of joint surfaces?

    <p>Distractive forces</p> Signup and view all the answers

    What is the main characteristic of tensile forces?

    <p>Equal in magnitude</p> Signup and view all the answers

    Which type of forces have an action line parallel to contacting surfaces?

    <p>Friction forces</p> Signup and view all the answers

    What is the special case of torque where rotation of a segment around its long axis occurs?

    <p>Torsional moments</p> Signup and view all the answers

    Which type of force potentially exists on an object whenever there is a contact force on the object?

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

    What is the force that passes through the Center of Mass (CoM)?

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

    'Anatomic pulleys' redirect muscle force to make actions easier by:

    <p>Increasing the moment arm</p> Signup and view all the answers

    'Parallel force systems' involve two or more forces applied on the same object that are:

    <p>Parallel to each other</p> Signup and view all the answers

    Which condition ensures equilibrium in vertical forces?

    <p>Vertical Forces = 0</p> Signup and view all the answers

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