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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| balanced force | two or more forces whose effects cancel each other out and do not change the motion of a object.
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| center of mass | point of a object that moves as if all of the object's mass were concentrated at that point.
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| force | push or pull.
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| friction | force that acts to oppose sliding between two surfaces that are touching.
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| net force | combination of all forces acting on an object.
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| newton's first law of motion | first law of motion: a body remains at rest or in motion with a constant velocity unless acted upon by an external force
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| newton's second law of motion | second law of motion: the rate of change of momentum is proportional to the imposed force and goes in the direction of the force
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| newton's third law of motion | third law of motion: action and reaction are equal and opposite
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| unbalanced forces | In physics, tension is the pulling force exerted by a string, cable, chain, or similar solid object on another object
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| weight | gravitational force between an object and earth.
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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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Created by:
egyptk
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