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
Differential Forms
\begin{large}\[ \frac{dv}{dt} = a\]\end{large} |
\begin{large}\[ \frac{dx}{dt} = v\]\end{large} |
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Integral Forms
\begin{large}\[ v(t) = v(t_{i})+\int_{t_{i}}^{t} a\;dt\]\end{large} |
\begin{large}\[ x(t) = x(t_{i})+\int_{t_{i}}^{t} v\;dt\]\end{large} |
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Diagrammatic Representations
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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
 All Examples Relevant to the Model
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