Apologia Physical Science Module 9
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Physics | the most fundamental of all sciences
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| 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.
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| What does this tell you about position? | Position must always be given relative to something else.
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| Reference point | a point against which position is measured
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| All motion is relative | one of the most important concepts in all of physics
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| Speed | How quickly motion occurs;
speed= distance traveled/time traveled
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| Vector quantity | a physical measurement that contains directional information
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| Scalar quantity | A physical measurement that does not contain directional information
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| When objects travel in the ____ direction, their relative speed is the difference between their individual _____. | same;speeds
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| When they travel in opposite directions, their ____ speed in the ___ of their individual speeds. | relative;sum
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| Free fall | the state of an object that is falling towards the earth with nothing inhibiting its fall
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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