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Apologia PS Module 9

Apologia Physical Science Module 9

Meteorology the study of weather
Physics the most fundamental of all sciences
Mechanics the branch of physics that deals with analyzing and understanding objects in motion, the forces applied to those objects, and the energy that exists in them.
What does this tell you about position? Position must always be given relative to something else.
Reference point a point against which position is measured
All motion is relative one of the most important concepts in all of physics
Speed How quickly motion occurs; speed= distance traveled/time traveled
Vector quantity a physical measurement that contains directional information
Scalar quantity A physical measurement that does not contain directional information
When objects travel in the ____ direction, their relative speed is the difference between their individual _____. same;speeds
When they travel in opposite directions, their ____ speed in the ___ of their individual speeds. relative;sum

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