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the branch of applied mathematical dealing with motion and forces
mechanics
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measures the positions, speed or velocity, and acceleration of objects
kinematics
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the branch of mechanics concerned with the motion of bodies under the action of forces
dynamics
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the branch of mechanics concerned with bodies at rest and forces in equilibrium
statics
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a pause or break in activity
interval
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any measurable quantity that can be completely described with a single piece of information is a scalar quantity;
having only magnitude, not direction
scalar
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a quantity having direction as well as magnitude
vector
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the amount of space between two things or people
distance
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the moving of something from its place or position
displacement
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the great size or extent of something
magnitude
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physics, velocity is the rate of change of displacement
average speed
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the rate of displacement;the speed of something in a given direction
velocity
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increase in the rate of speed of something
acceleration
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a set of connected things or part forming a complex whole
system
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can slow, stop or reverse the original positive velocity
negative acceleration
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equal to the distance traveled
speed
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the total distance divided by the total time
average speed
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the actual speed at any given moment (basically the speedometer)
instantaneous speed
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can be a scalar or vector;
the rate of change of speed or velocity over time
acceleration
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vectors are drawn as
lines
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requires 2 pieces of information: a scalar for a magnitude and a direction
vector
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velocity vs. speed; a measurable quantity that has both a scalar value and a direction associated with it
vector
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an entity consisting of one or more parts that logically belong
physical system
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the geometric space containing the point of reference
frame of reference, or reference frame
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an imaginary line marked off in distance units
coordinate axis
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physicists split mechanics into 3 parts:
kinematics, dynamics, statics
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