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Physics Unit 2
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What is "Speed"?
rate at which distance is traveled
What is "Instantaneous Speed"?
how fast something is moving at a particular instant in time
What is "Displacement" and what direction does it go?
the straight-line distance between two points. Vector.
Direction goes from start to finish.
does not equal total distance traveled
What is "Velocity" and what direction does it go?
How fast something is moving and in what direction.
Always goes the same direction as motion.
What is the formula to find the average speed?
s=d/∆t
What is the formula to find the average velocity?
V=∆x/∆t
What is "Acceleration" and what direction?
Rate of change of velocity. [Change of speed OR direction in velocity]
-- If speeding up, same direction as movement
-- If slowing down, opposite direction of movement
What is ∆?
Delta [Final-Initial]
∆t = t-t
_{0}
Define: Free Fall
A=
motion under only the influence of gravity
-g or -9.8 m/s
^{2}
Kinematic Equation
V=
V=V
_{0}
+at
Kinematic Equation
X=
X=X
_{0}
+V
_{0}
t+1/2at
^{2}
Kinematic Equation
V
^{2}
V
^{2}
=V
_{0}
^{2}
+2a(X-X
_{0}
)
Kinematic Equation
X-X
_{0}
1/2(V+V
_{0}
)t
Author:
andreabyerly
ID:
33851
Card Set:
Physics Unit 2
Updated:
2010-09-13 21:50:59
Tags:
Physics
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Description:
Physics Unit 2
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