Dynamics in Physics
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Questions and Answers

Which term refers to an external cause in the form of push or pull that produces or tries to produce motion in a body?

  • Force (correct)
  • Inertia
  • Velocity
  • Mass

    • What is the branch of physics that studies the motion of a body considering the cause of motion?

  • Static physics
  • Kinematics
  • Dynamics (correct)
  • Quantum physics

    • According to Newton's first law of motion, what happens to a body when no external force is applied to it?

  • It moves with increasing velocity
  • It changes its direction constantly
  • It moves with constant velocity (correct)
  • It comes to rest

    • What term is used to describe the property with which a body resists any change in its state of motion?

    <p>Inertia (C)</p> Signup and view all the answers

    What is the term for the inability of a body to change its state of rest or uniform motion by itself?

    <p>Inertia (C)</p> Signup and view all the answers

    What is the simplest frame of reference used to describe and understand the motion of particles?

    <p>Inertial frame (A)</p> Signup and view all the answers

    Which law states that when an external force is applied to a body of constant mass, the force produces an acceleration directly proportional to the force and inversely proportional to the mass of the body?

    <p>Newton's Second Law (A)</p> Signup and view all the answers

    What is the definition of linear momentum?

    <p>The product of the mass of the body and its velocity (C)</p> Signup and view all the answers

    Which principle states that to every action there is an equal and opposite reaction force?

    <p>Newton's Third Law (D)</p> Signup and view all the answers

    What is impulse in physics?

    <p>The product of force and the small time interval for which it acts (D)</p> Signup and view all the answers

    Which law states that the total momentum of an isolated system of particles is conserved?

    <p>Law of Conservation of Momentum (B)</p> Signup and view all the answers

    What are concurrent forces?

    <p>Forces acting at one point (A)</p> Signup and view all the answers

    In what condition are concurrent forces said to be in equilibrium?

    <p>When there is no change in the position or state of motion of the body they are acting on (C)</p> Signup and view all the answers

    What is the weight of a body?

    <p>The force with which the earth attracts a body towards its center (A)</p> Signup and view all the answers

    What are some simple applications of the law of conservation of linear momentum?

    <p>&quot;Recoiling of a gun, flight of rockets, and jet planes&quot; (A)</p> Signup and view all the answers

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