Chapter2
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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| What is rolling friction? | When an object rolls accross a surface
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| What is friction? | the force that one surface exerts on another when the two surfaces rub against each other
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| SI | Unit of force-newton
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| Weight | the force of gravity on an object at the surface of a planet
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| inertia | the tendency of an object to resist any change in it's motion
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| freefall | a motion of a falling object when the only force acting on it's gravity
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| momentum | the product of an objects mass and veloctity
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| satallite | any objsect that orbits around another object in space
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| centripetal force | a force that couses an object to move in a circle
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| force | a push or pull exerted on an object
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| velocity | speed in a given direction
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| Static friction | friction that acs on objects that are not moving
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| sliding friction | friction that occurs when one solid surface slides over another
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| fluid fraction | friction that occurs when an object moves through fluid
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| gravity | the force that pulld objects toward each other.
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| two factors that affect the gravitational pull between objects | mass and distance
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| net force | the combination of all the forces acting on an object.
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| unbalanced forces | can caouse an object to start moving, stop moving, or cange direction
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| air resistance | the fluid friction experienced by objects falling through the air.
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| terminal velocity | greatest velocity a falling objects reaches
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| projectile | an object that is thrown
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| newtons first law of motion | an object at rest will remain at rest, and object moving at a constant velocity will continue moving at a constant velocity, unbless it is acted uopn by an unbalanced force
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| newtons second law of motion | acceleration depends on the object's mass and the net force acting on the object.
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| acceleration= | = net/force
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| newtons third law of motion | if one object exerts a force on another object, then the second objects exerts a force of an equal strength in the opposite direction on the first object
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| momentum= | = mass x velocity
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| laws of conservation | in an absence of outside forces, the total momentum of objects that interact does not change.
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| total momentum | any group of objectsremain the same, or is conserved unless outside forces act on the objects
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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:
lelemsis
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