Physics: Forces and Motion
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Questions and Answers

What is an unbalanced force?

  • Forces that do not cause a change in motion
  • Forces that cause a change in the motion of an object (correct)
  • Two equal forces acting in opposite directions
  • Forces that act on an object at rest without motion

    • What are balanced forces?

    Two forces acting in opposite directions on an object that are equal in size.

    What is net force?

    The sum of all the forces acting on an object.

    What is a newton?

    <p>A unit of force</p> Signup and view all the answers

    What is force?

    <p>Strength or energy as an attribute of physical action or movement.</p> Signup and view all the answers

    What is inertia?

    <p>A tendency to do nothing or to remain unchanged.</p> Signup and view all the answers

    What is gravity?

    <p>The force that attracts a body toward the center of the Earth or any other physical body having mass.</p> Signup and view all the answers

    What is acceleration?

    <p>A vehicle's capacity to gain speed within a short time.</p> Signup and view all the answers

    What is velocity?

    <p>The speed of something in a given direction.</p> Signup and view all the answers

    What is mass?

    <p>A coherent, typically large body of matter with no definite shape.</p> Signup and view all the answers

    Study Notes

    Unbalanced Forces

    • Unbalanced forces lead to a change in an object's motion.
    • When at rest, an object exposed to balanced forces remains stationary.
    • A person pushing against a wall experiences equal and opposite force, causing no movement.

    Balanced Forces

    • Balanced forces consist of two equal forces acting in opposite directions.
    • An object under balanced forces either remains at rest or moves at a constant speed and direction.

    Net Force

    • Defined as the total of all forces acting on an object.
    • Calculated by summing the individual forces, resulting in the net force that influences motion.

    Newton

    • Unit of force in the International System (SI).
    • One newton accelerates a mass of one kilogram at one meter per second squared.
    • Equivalent to 100,000 dynes.

    Force

    • Represents strength or energy involved in physical action or movement.

    Inertia

    • The property of matter that describes its tendency to resist changes in its state of motion.

    Gravity

    • A natural phenomenon where masses attract each other, pulling towards centers of mass.
    • Newton's laws of gravity apply, modified slightly by the principles of general relativity.

    Acceleration

    • The rate at which an object increases its velocity over a short duration.

    Velocity

    • Describes both the speed of an object and its direction of motion.

    Mass

    • A substantial body of matter with indefinite shape, often described by quantity rather than form.

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    Description

    This quiz explores the concepts of balanced and unbalanced forces, net force, and the fundamental principles related to Newton's laws. It is designed to enhance your understanding of how forces impact an object's motion, inertia, and gravity. Test your knowledge and see how well you grasp these essential physics topics.

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