Physics Common Assessment Questions 4-5
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Questions and Answers

If an object is in free fall, which force is acting upon it?

  • The force of inertia
  • The normal force
  • The force of gravity (correct)
  • The force of friction

    • Which statement about inertia is correct?

  • Inertia is the tendency of an object to resist changes in its state of motion (correct)
  • Inertia is directly proportional to an object's mass
  • Inertia is a force that opposes motion
  • Inertia is a measure of an object's weight

    • What is the relationship between mass and weight?

  • Mass and weight are the same thing
  • Weight is a measure of an object's inertia
  • Mass is a measure of the gravitational force exerted on an object
  • Weight is the force exerted on an object due to gravity, proportional to its mass (correct)

    • According to Newton's Second Law of Motion, what is the relationship between force, mass, and acceleration?

    <p>Force = mass x acceleration</p> Signup and view all the answers

    If an object is at rest on a frictionless surface, what force is required to keep it at rest?

    <p>No force is required</p> Signup and view all the answers

    Which of the following is NOT a unit of force?

    <p>Kilogram (kg)</p> Signup and view all the answers

    If an object is dropped from a height in a vacuum, what force initially causes its acceleration?

    <p>The force of gravity</p> Signup and view all the answers

    What is the net force acting on an object in free fall near the Earth's surface?

    <p>The force of gravity only</p> Signup and view all the answers

    If an object is at rest on a frictionless surface, what force is responsible for keeping it at rest?

    <p>Newton's first law of motion</p> Signup and view all the answers

    What is the relationship between an object's mass and its weight near the Earth's surface?

    <p>They are directly proportional</p> Signup and view all the answers

    If a rocket is launched vertically upward, what force initially causes its acceleration?

    <p>The rocket's thrust</p> Signup and view all the answers

    What is the cause of inertia in an object?

    <p>The object's mass</p> Signup and view all the answers

    What is the primary force acting on an object in free fall, where the force of air resistance is negligible?

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

    An object has a mass of 6 kg on Earth. What is the weight of this object in Newtons?

    <p>$58.8$ N</p> Signup and view all the answers

    An object exerts a force of $17 , \mathrm{N}$ and accelerates at $8 , \mathrm{m/s^2}$. What is the mass of this object?

    <p>$2.13 , \mathrm{kg}$</p> Signup and view all the answers

    What is the force that opposes the motion of a falling object and increases as the object's velocity increases?

    <p>Air resistance</p> Signup and view all the answers

    Which of Newton's laws of motion describes an object's tendency to resist changes in its state of motion?

    <p>First law</p> Signup and view all the answers

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