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12 Cards in this Set
- Front
- Back
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force
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a pull or push that acts on an object
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interia
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the tendency of an object to resist a change in its state of motion
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Friction
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a force that acts against moving objects
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speed
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how fast an object is changing positions with time
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velocity
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an object's speed in certain direction
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acceleration
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a change in velocity
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Balance forces
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all of the forces on an object cancel each other out
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unbalanced force
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a certain force is either only partially cancelled or not canceled at all by other forces
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newton's first law
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an object at rest tends to stay at rest and an object in motion tends to stay in motion un less acted upon an outside force
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newton's second law
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an object's motion will accelerate when forces acting on it are ubalanced
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newton third law
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every action has an equal and opposite
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newtons law of gravity
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the force of gravity between two objects increases as the objects increases . the force of grvity between two objects decreases as the distance between them increase
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