1-D Motion (Constant Velocity)

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[Model Hierarchy]

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Description and Assumptions

This model is applicable to a single point particle moving with constant velocity. It is a subclass of the One-Dimensional Motion with Constant Acceleration model defined by the constraint a = 0.

Problem Cues

For pure kinematics problems, the problem will often explicitly state that the velocity is constant, or else some quantitative information will be given (e.g. a linear position versus time plot) that implies the velocity is constant.

Page Contents
Description and Assumptions Problem Cues Prerequisite Knowledge Prior Models Vocabulary System Constituents State Variables Interactions Relevant Types Interaction Variables Model Law of Change Diagrammatical Representations Relevant Examples

Prerequisite Knowledge

Prior Models

None.

Vocabulary

[position (one-dimensional)]
velocity

System

Constituents

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

State Variables

Time (t), position (x) and velocity (v).

Interactions

Relevant Types

In order for the velocity to be constant, the system must be subject to no net interaction.

Interaction Variables

None.

Model

Law of Change

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\begin

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$x = x_

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+ v (t - t_

)$\end

Diagrammatical Representations

Position versus time graph.

Relevant Examples

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null	RELATE wiki by David E. Pritchard is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 United States License.

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