Chapter 2
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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Force | A push or a pull on an object
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Contact Force | A push or a pull on an object by another that is touching it
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Non-contact Force | A force that one object can apply to another object without touching it
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Gravity | An attractive force that exists between all objects that have mass
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Mass | The amount of matter in an object
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Weight | The gravitational force exerted on an object
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Friction | A force that resists the motion of two surface that are touching
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Net Force | The combination of all the forces acting on an object
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Balanced Forces | Forces acting on an object that combine an form a net force of zero
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Unbalanced Forces | Forces acting on an object that combine and form a net force that is not a zero
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Inertia | The tendency of an object to resist a change in its motion
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Circular Motion | Any motion in which an object is moving along a curved path
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Centripetal Force | In circular motion, a force that acts perpendicular to the direction of motion, toward the center of the curve
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Momentum | A measure of how hard it is to stop a moving object
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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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