Physics Chapter: Force and Motion
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Questions and Answers

What term describes the property of matter that causes an object to resist changes in its state of motion?

  • the normal force
  • friction
  • tension
  • inertia (correct)
  • When the net force on an object is increased, which of the following will also increase?

  • neither A nor B
  • acceleration (correct)
  • velocity
  • both A and B
  • What is the SI unit for weight?

  • pound
  • kilogram
  • Joule
  • Newton (correct)
  • Which of Newton's Laws explains the jerking feeling when a vehicle stops suddenly?

    <p>Newton's 1st Law (D)</p> Signup and view all the answers

    If the distance between two objects is halved, how does this affect their gravitational attraction?

    <p>quadrupled (D)</p> Signup and view all the answers

    What is the direction of the normal force acting on a magnet sliding down a fridge door?

    <p>up (B)</p> Signup and view all the answers

    What will the magnitude of the normal force acting on a book be when a horizontal force is applied?

    <p>20 N (A)</p> Signup and view all the answers

    What is the nature of the force exerted by the table on the book?

    <p>8 N [up] the table exerts on the book (A)</p> Signup and view all the answers

    If an object is pushed at constant velocity, what can be said about the force of friction acting on it?

    <p>10 N [left] (D)</p> Signup and view all the answers

    If a block weighing 4.0 N is in an elevator accelerating downward at 1.0 m/s², what is the tension in the string supporting it?

    <p>Less than 4.0 N (C)</p> Signup and view all the answers

    In a car moving backward at constant speed, how do fuzzy dice hanging from the rear-view mirror behave?

    <p>Hanging straight down (D)</p> Signup and view all the answers

    What is the primary design goal of running shoes concerning friction?

    <p>Increase friction (D)</p> Signup and view all the answers

    What happens to the sled's forces if the pulling rope is angled above the horizontal?

    <p>The normal force decreases. (C)</p> Signup and view all the answers

    What is the acceleration of a 0.40-kg cart if a frictional force of 1.2 N opposes motion and it is attached to a 0.25-kg mass?

    <p>1.5 m/s² (B)</p> Signup and view all the answers

    How far does a box of mass 15 kg travel before stopping if its initial speed is 4.2 m/s and the coefficient of kinetic friction is 0.30?

    <p>2.8 meters (C)</p> Signup and view all the answers

    What is the acceleration of skater 1 if they push skater 2 with 70.0 N and both skaters are on ice with a coefficient of friction of 0.10?

    <p>0.7 m/s² (B)</p> Signup and view all the answers

    Study Notes

    Multiple Choice Questions

    • Inertia: The property of matter that resists changes in motion.
    • Newton's Laws: Essential for understanding motion.
    • Net Force Calculation: Calculating net force involves considering all forces acting on an object.
    • Gravitational Attraction: Distance between objects affects the gravitational force.
    • Normal Force Direction: The normal force is perpendicular to the surface it acts against.
    • Force Application: Forces can affect motion, or no motion, in different ways as shown in examples.

    Short Answer

    • Free Body Diagrams (FBD): Visual representations of forces acting on an object.
    • Force and Motion (Rope angle and more forces): Applying forces at angles or adding more forces changes the overall effect.
    • Net Force and Motion Description: Net force describes acceleration. More information is needed to describe overall motion.
    • Force Calculations: Calculations on friction and overall forces affecting accelerating object.

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    Description

    Test your knowledge on the concepts of force and motion in this quiz. Explore topics like inertia, Newton's laws, and net force calculations through multiple choice and short answer questions. Perfect for students seeking to deepen their understanding of physics principles.

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