Force and Motion Chapter 8

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Questions and Answers

What is the fundamental concept that explains why an object's speed changes over time?

  • Velocity
  • Motion
  • Acceleration
  • Force (correct)

What is the most common way to experience and understand force in everyday life?

  • Through hearing
  • Through smelling
  • Through muscular effort (correct)
  • Through tasting

What is the natural state of an object, according to ancient beliefs?

  • Motion
  • Deceleration
  • Rest (correct)
  • Acceleration

What is the primary way to describe force?

<p>By feeling its effect on an object (A)</p> Signup and view all the answers

What is the relationship between force and motion?

<p>Force can both cause and change motion (A)</p> Signup and view all the answers

What is the primary goal of this chapter?

<p>To describe the nature of force and motion (B)</p> Signup and view all the answers

What is the primary reason for an object to change its state of motion?

<p>A force is applied to the object (B)</p> Signup and view all the answers

What happens to an object when two opposite forces of equal magnitude are applied to it?

<p>It remains stationary (B)</p> Signup and view all the answers

What is the result of applying a force on a spring, as shown in Fig. 8.2?

<p>The spring expands (A)</p> Signup and view all the answers

What is an example of a force changing the shape of an object?

<p>A spherical rubber ball becoming oblong (D)</p> Signup and view all the answers

What happens to an object when a force is applied to it from both sides with equal forces?

<p>The object remains stationary (A)</p> Signup and view all the answers

What is the direction of motion of an object when two opposite forces of different magnitudes are applied to it?

<p>The direction of the greater force (D)</p> Signup and view all the answers

What is the fundamental principle behind the third law of motion?

<p>When one object exerts a force on another, the second object instantaneously exerts an equal and opposite force back (D)</p> Signup and view all the answers

What happens when you kick a football and collide with a player of the opposite team?

<p>Both players apply a force to each other, and both feel hurt (A)</p> Signup and view all the answers

What is the relationship between the forces exerted by two spring balances connected together?

<p>The forces exerted by both balances are equal but opposite in direction (A)</p> Signup and view all the answers

What is the correct statement about action and reaction forces?

<p>Action and reaction forces always act on different objects (D)</p> Signup and view all the answers

What is the alternative statement of the third law of motion?

<p>To every action, there is an equal and opposite reaction (C)</p> Signup and view all the answers

What is a crucial point to remember about action and reaction forces?

<p>They always act on different objects, simultaneously (C)</p> Signup and view all the answers

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