Versions Compared

Key

  • This line was added.
  • This line was removed.
  • Formatting was changed.
Comment: Migration of unmigrated content due to installation of a new plugin
unmigratedcomposition-wiki-markupsetup
HTML Table
border1
cellpadding8
cellspacing0
rulescols
framevoid
Table Row (tr)
valigntop
Table Cell (td)

Excerpt
hiddentrue

System: One point particle constrained to move in one dimension. — Interactions: Any that respect the one-dimensional motion.

Introduction to the Model

Description and Assumptions

This model is applicable to a single point particle subject to an acceleration that is constrained to one dimension and which is either parallel to or anti-parallel to the particle's initial velocity.

Learning Objectives

Students will be assumed to understand this model who can:

  • Choose the one graph possible velocity or acceleration vs. time graphs which corresponds to a model position versus time graph.
  • Differentiate position given as a polynomial function of time to find the corresponding velocity and acceleration.
  • Integrate the velocity or acceleration when given as a polynomial function of time along with appropriate initial conditions to find the functional form of the position.

S.I.M. Structure of the Model

Compatible Systems

A single point particle (or a system treated as a point particle with position specified by the center of mass).

Relevant Interactions

Some time-varying external influence that is confined to one dimension.

Laws of Change

Mathematical Representation
Section
Column
Differential Forms
Latex
\begin{large}\[ \frac{dv}{dt} = a\]\end{large}



Latex
\begin{large}\[ \frac{dx}{dt} = v\]\end{large}
Column
Integral Forms
Latex
\begin{large}\[ v(t) = v(t_{i})+\int_{t_{i}}^{t} a\;dt\]\end{large}



Latex
\begin{large}\[ x(t) = x(t_{i})+\int_{t_{i}}^{t} v\;dt\]\end{large}
Diagrammatic Representations

Image Added

Click here to run a simulation demonstrating position,
velocity and acceleration graphs for general 1-D motion

Simulation provided by:
PhET Interative Simulations
University of Colorado
http://phet.colorado.edu

Relevant Examples

Toggle Cloak
idallex
All Examples Relevant to the Model
Cloak
idallex

Content by Label
example_problem,nonuniform_acceleration
example_problem,nonuniform_acceleration
showLabelstrue
maxResults50
showSpacefalse
excerpttrue
operatorAND
excerptTypesimple
cqllabel = "nonuniform_acceleration" and label = "example_problem"
Cloak
allex
allex
h2. Description {table:align=right\|cellspacing=0\|cellpadding=1\|border=1\|frame=box\|width=40%}{tr}{td:align=center\|bgcolor=#F2F2F2} *Hierarchy of Models* {td}{tr}{tr}{td} {pagetree:root=Hierarchy of Models}{td}{tr}{table}{excerpt} This model applies to a point particle subject to an external force that is either parallel or antiparallel to the particle's initial velocity.  {excerpt} ---- || Page Contents || | {toc:style=none\|indent=10px} | ---- h2. Assumptions and Limitations h4. Prior Models * Link to model pages that should be learned before this model. h4. Vocabulary * [frame of reference] * [position (one-dimensional)] * [velocity (one-dimensional)] * [acceleration (one-dimensional)] ---- h2. Model Specification h4. System Schema *Internal Constituents:* Point particle. *Environment:* external agents interacting with the particle which are the responsible of the *real* forces acting *on* the particle. h4. Descriptors *Object Variables:* e.g. m, l *State Variables:* e.g. v, x, t *Interaction Variables:* e.g. F, a h4. Laws of Interaction A force that dep\[ends on time {latex} $ \vec{F}(t)}$ {latex} h4. Laws of Change Example: {latex} \begin {large}$v_{\rm f} = v_{\rm i} + a (t_{\rm f} - t_{\rm i})$\end{large} {latex}\\ \\ \\ \\ \\ \\ \\ \\ ---- h2. Relevant Examples Replace search terms in the macro with relevant ones. {contentbylabel:1d_motion,constant_acceleration,example_problem\|showSpace=false\|showLabels=false\|maxResults=50} ---- {search-box} \\ \\ | !copyright and waiver^copyrightnotice.png! | RELATE wiki by David E. Pritchard is licensed under a [Creative Commons Attribution-Noncommercial-Share Alike 3.0 United States License|http://creativecommons.org/licenses/by-nc-sa/3.0/us/]. | \\