Laws of Motion
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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| Newton's 1st Law of Motion | An object in motion will stay in motion, and an object at rest will stay at rest, unless some force causes it to change.
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| Newton's 2nd Law of Motion | The acceleration of an object depends on the mass of the object (how heavy it is) and the amount of force pushing the object.
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| Newton's 3rd Law of Motion | For every action, there is an equal and opposite reaction. The
reaction is equal in force and opposite in direction.
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| force | a push or a pull, usually measured in Newtons
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| mass | the amount of matter inside an object, measured in grams or kilograms
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| friction | a force caused when two things rub against one another
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| inertia | the tendency of an object to resist change
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| acceleration | a change in the speed of an object
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| True or False? All objects have inertia, whether they are moving or standing still. | TRUE.
Inertia depends on mass, and an object's mass remains the same whether it's moving or standing still.
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| True or False? The amount of inertia an object has depends on its mass. | TRUE.
The greater the object's mass, the greater its inertia.
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| True or False? Fast moving objects have more inertia than slow moving objects. | FALSE.
Inertia depends on mass, not speed.
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| According to Newton's 2nd Law, what is the formula for calculating force? | F=ma
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| In the formula F=ma, what do the letters F, m and a stand for? | F=ma
Force = mass x acceleration
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Created by:
MrArchung
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