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# Physical Science (Basic Science and Motion Forces)

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Author: Mimi B
##### Description:

To help others learn how to do dimensional analysis, conversion factor, calculate distance, velocity, and time.  This packet will help others understand the overall concept of basic science and motion forces

This packet teaches the concepts of basic science and motion forces.

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Tutorial

## Variables and Observation and Inference

Learn all about Independent and Dependent Variables, Constants and Controls, and Observations and Inferences on this powerpoint.

## Dimensional Analysis

Learn how to complete dimensional analysis problems through this video.

## Difference between Dimensional Analysis and Conversion Factor

Conversion factor is switching systems. Such as, miles to kilometers.  But dimensional analysis is switching units, such as centimeters to meters.

## Velocity, Area and Density of an Object

Area: length x width (cm3)

cm3--centimeters cubed

Volume: length x width x height (cm3 or mL)

cm3--centimeters cubed

Density: mass/volume (mass dived by volume) -- (g/mL) -grams per milliliter

## Definitions of Speed and Velocity

Speed:

-how fast something is moving

-the rate of change of position

**always positive

Velocity:

-rate of chage of position in a specific direction

**can be positive or negative

--negative velocity means something is traveling in the opposite direction

## Velocity

Learn all about velocity on this powerpoint.