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Apologia PS Module 9
Apologia Physical Science Module 9
Question | Answer |
---|---|
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 |
Free fall | the state of an object that is falling towards the earth with nothing inhibiting its fall |