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Describing Motion
Motion Equations
11
Physics
12th Grade
11/15/2011

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Term
Acceleration
Definition
The time rate-of-change of velocity.
Term
Acceleration of Gravity (g)
Definition
9.81 m/s2
Term
Average Velocity
Definition

Total distance traveled

_____________________

 

Time elapsed

Term
Cartesian Coordinates
Definition
Standard graph, points have rise and run, X+ = right, Y-=down etc...
Term
Component method for adding vectors
Definition
The scalar x-component Rx of the resultant R is the sum of all the scalar X-components.
Term
Cosine
Definition

Adjacent

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Hypotenuse

Term
Displacement
Definition

Final position minus initial position.

ΔX=X-X0

Term
Distance
Definition
Total space traveled.
Term
Graphical method for adding vectors
Definition
When adding [image] + [image] = [image] , put the tail of [image] on the head of [image]. [image] is the vector from the tail of [image] to the head of [image].
Term
Instantaneous Velocity
Definition
Instantaneous velocity evaluated for a time interval that approached 0
Term
Instantaneous Speed
Definition
The slope of the tangeant line of a speed graph.
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