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# Kinematics

### Kinematics Vocab

TermDefinition
Mechanics the study of the motion of objects
Kinematics the language of mechanics
Linear motion when an object moves in a straight line
Circular motion (parabolic) when an object moves along a curved path
Vibrational motion when an object simply vibrates
Rotational motion when an object rotates around a fixed position (toy top)
Speed how fast an object is moving
Scalar quantity fully described by a value
Vector quantity described by a value and a direction
Velocity rate at which an object changes its position
Distance to time ratio speed of the object
Acceleration rate an object's velocity changes
Rate quantity time-based
Distance "how much ground an object covered" during its motion
Displacement "how far out of place an object is"; overall change
Instantaneous speed speed at any given instant in time (speedometer)
Average speed average of all instantaneous speeds
Constant acceleration when velocity changes by a constant amount each value
Positive acceleration when an object is speeding up in the positive direction/ when an object is slowing down in the negative direction
Negative acceleration when an object is slowing down in the positive direction/ when an object is speeding up in the negative direction
Vector diagrams diagrams that depict the direction and relative magnitude of a vector quantity by a vector arrow
Ticker tape analysis when a long tape is attached to an object in motion and threaded through a device that places a tick at regular intervals
Created by: Kwong5

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