Conservative & Nonconservative Forces

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Questions and Answers

The title of Chapter 2, Downhill, suggests a sense of ______ or decline in the story's events or a character's experiences.

deterioration

Quan's attempts to 'keep it together,' as mentioned on page 28, might refer to strategies like ______, seeking solace in familiar routines, or trying to maintain a facade of normalcy.

distracting himself

Quan's repeated allusions to a specific novel may signify his search for ______ or understanding in his own life, drawing parallels between his experiences and those of the characters in the book.

comfort

The repetition of a phrase or word by Nic Stone on pages 30-31 could emphasize a theme of ______ or internal conflict that she's grappling with, particularly in relation to the math test.

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

Quan's emotional shift regarding his math test grade, from his initial reaction to his feelings at home, might illustrate a change in perspective due to ______ or a deeper understanding of the situation.

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

The title Downhill may symbolize the protagonist’s journey of ______ and the challenges they face as they navigate through difficult circumstances.

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

Quan’s coping mechanisms, such as trying to 'keep it together,' might involve suppressing his true emotions and putting on a ______ to appear strong.

<p>brave face</p> Signup and view all the answers

Quan’s affinity for certain novels could stem from his desire to find ______ or guidance in dealing with his own personal struggles and challenges.

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

Nic Stone’s repeated phrase or word might serve as a ______ to emphasize the emotional weight or significance of the math test in her life.

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

The change in Quan’s tone after arriving home suggests he may be experiencing a sense of ______ or a shift in perspective regarding his academic performance.

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

In Chapter 2, Downhill, the events might parallel a character's ______ into despair as they face a series of unfortunate incidents.

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

To 'keep it together,' Quan may resort to activities that provide temporary ______, distracting him from the underlying stress.

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

Quan's consistent reference to a particular novel might indicate a deep-seated desire for ______ or someone who understands his struggles.

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

Nic Stone's recurring phrase could serve as an emotional ______, reflecting her inner thoughts and self-perceptions regarding the math test.

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

The alteration in Quan's feelings toward his math test reveals a gradual acceptance or ______ with the outcome, influencing his dedication to further academic work.

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

The chapter title Downhill sets a ______ tone, suggesting a decline in circumstances for one or more characters.

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

When Quan attempts to 'keep it together,' it might be seen as a form of ______, preventing him from fully addressing his challenges.

<p>self-preservation</p> Signup and view all the answers

Quan’s gravitation towards specific novels could signify a deep-seated desire for ______ and guidance in dealing with his personal struggles.

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

Nic Stone's emphasis of a particular phrase or word likely serves as a ______ to her own anxieties surrounding her performance on the math test.

<p>litmus test</p> Signup and view all the answers

Quan's changing sentiments about his math assessment showcase his internal ______, influencing his dedication to his future academic efforts.

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

Flashcards

How did Quan cope?

Quan coped by trying to keep it together by focusing on specific things.

What books does Quan reference?

Quan repeatedly refers to books that reflect his inner thoughts and feelings.

Why does Nic Stone repeat?

Nic Stone uses repetition to emphasize feelings about the Math Test.

Quan's Feelings about Math Test

Quan feels different about the math test at school and after going home.

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Study Notes

Conservative Forces

  • A force is conservative when the work done moving an object between two points is path-independent.
  • Conservative forces allow for the recovery of work done.
  • Gravity and spring forces serve as examples of conservative forces.

Nonconservative Forces

  • A force is nonconservative when the work done moving an object between two points depends on the path taken.
  • Nonconservative forces do not easily allow for the recovery of work done.
  • Friction, air resistance, tension in a cord and forces exerted by muscles are examples of nonconservative forces.

Gravitational Potential Energy

  • Gravitational potential energy ($PE_g$) is the energy an object possesses due to its position within a gravitational field.
  • $PE_g$ is calculated as $mgh$, where $m$ is mass, $g$ is the acceleration due to gravity, and $h$ is height above a reference point.
  • Only changes in potential energy are significant.
  • The change in potential energy ($\Delta PE_g$) is given by $mg\Delta h = mg(h_f - h_i)$.
  • The reference point for height ($h = 0$) can be chosen freely.

Gravitational Potential Energy Example

  • A 2.0 kg book held 1.3 m above the floor has a gravitational potential energy of 25.5 J relative to the floor ($PE_g = (2.0 kg)(9.8 m/s^2)(1.3 m)$).
  • The same book held 1.3 m above the floor has a gravitational potential energy of 10.8 J relative to a table 0.75 m above the floor ($PE_g = (2.0 kg)(9.8 m/s^2)(1.3 m - 0.75 m)$).

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