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| the study of matter and energy |
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| the study of composition, structure, and reactions of matter |
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| study of the universe-- all matter, energy, space, and time |
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| science of the planet earth |
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| a possible solution or explanation for the observation |
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a concise statement in words or a mathematical equation about a fundamental relationship in nature
--ex: gravity, law of conservation of mass/energy.
--note: laws do not explain behavior |
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a well tested explaination of a broad segment of natural phenomena
--ex: einstein's theory of relativity |
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measurement of space in any direction
--SI unit: meter (m) |
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amount of matter an object contains
--kilograms (kg) |
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contiinuous foward flowing of events
--seconds (s) |
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fluid volume or capacity
--liter (L) |
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| a quantity is capable of producing motion or a change in motion (i.e. a change in velocity or acceleration) |
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| equal in magnitude and opposite in direction. In effect, they cancel each other out, and the net force is zero. NO MOTION OCCURS. |
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| Newton's First Law of Motion |
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| an object will remain at rest or in uniform mortion in a straight line unless acted upon by an external, unbalanced force. |
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the natural tendency of an object to remain at rest or in a state of uniform motion
--the inertia of a object is related to its mass; the greater the mass of an object, the greater its inertia, and vice versa
--more mass=> more resistance to change=> more inertia |
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| Newton's Second Law of Motion |
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force=mass x acceleration
SI unit for force= N (newton) |
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| the force that supports an object on the surface against gravity. also called normal force |
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a combination of all forces that act on an object
changes an objects motion |
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the resistive force that opposes the motion or attempted motion of an object through a fluid or past another object with which it is in contact
always acts in a direction to oppose motion |
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| changing from standard form to scientific notation |
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| a method of expressing numbers properly involving accuracy of measurement and mathematical operations |
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| closeness of results to the true or accepted value |
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| getting the same or nearly the same results for repeated measurement |
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| the amount of mass in a definite volume (heavy) |
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| a continuous change in postion reference by length and time |
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| refers to the location of an object implied by some reference point |
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| a scalar quantity specifying the total distsncce traveled by the time spent traveling the total difference |
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| a quantity that has only magnitude (a number plus the unit of measurement 10m/s) |
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| same as speed, but a vector. quantity describes both magnitude and direction. 9.8m/s downward |
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| results from a change in speed, a change in direction or both |
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| all free falling objects near the earths surface have the same constant acceleration: g=9.8m/s^2 |
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| objects in motion soley under the influence of gravity |
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| the distance covered by a falling object is not uniform b/c the object speeds up. we can calculate the distance a dropped object travels downward w/ time by: d=.5gt^2 |
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