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25 Cards in this Set
- Front
- Back
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Displacement |
- vector quantity - refers to the object's overall change in position |
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Distance |
- scalar quantity - refers to how far an object has travelled |
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Scalar |
- quantity that is described in numbers alone → 5 m, 60 bytes, 12 seconds |
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Position |
- the exact location of an object |
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Velocity |
- vector quantity - how fast an object is going in a certain direction |
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Acceleration |
- vector quantity - how quickly a moving object speeds up in a given time |
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Time |
- scalar quantity - no negatives |
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Speed |
- how fast an object is moving |
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Aristotle |
- natural motion → motion in which an object moves naturally without any outside force - violent motion → motion in which force is needed to make an object move |
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Galileo |
- "ideal" world without friction - maintained that an object's natural motion is circular |
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Descartes |
- concluded that the natural tendency of a moving object was in a straight line |
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Newton |
- created Newton's Laws |
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Inertia |
- the property of matter that resists changes in motion - Newton's First Law (of Inertia) |
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Newton's First Law |
- an object at rest stays at rest, and an object in motion stays in motion, unless acted upon by an external unbalanced force |
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Second Collision |
- when object A suddenly stops moving, other unrestrained objects within object A will continue to move with the same speed and in the same direction until another force is experienced |
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Uniform Motion |
- motion in which the moving object is moving at a constant speed |
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Non-Uniform Motion |
- motion in which the speed of the moving object is not constant |
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Action-Reaction |
- objects exerting force on each other - Newton's Third Law → for every action, there is an equal opposite reaction |
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Momentum |
- describes a quantity of motion - P = mv - units in kg • m/s |
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Impulse |
- amount of force and the time in which the force is applied - J = Ft - units in N-s |
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Proportional |
- directly proportional → rate of increase in one variable is the same as the rate of increase in another one - inversely proportional → rate of increase in one variable is the same as the rate of decrease in another variable |
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Force |
- something that causes a change in the motion of an object - F = ma - units in N |
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Exponential |
- rate of increase in one variable is faster than the rate of increase in another variable |
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Newton's Third Law |
- for every action, there is an equal and opposite reaction |
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Newton's Second Law |
- F = ma |
