Semester 1 Exam
Review
2014
Part I: Motion
Motion Maps Review
•
THE FOLLOWING CAN BE FOUND ON THE WIKI:
•
See the handout called: “Unit II Reading: Motion
Maps”
•
See video: “Help with Physics: What’s A Motion Map?”
•
See Powerpoint slides: “Motion Maps”
•
Physics Classroom Interactives: !
Name That Motion
Graphing Motion
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THE FOLLOWING CAN BE FOUND ON THE WIKI:
•
Motion Graphs Review packet
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Video: What is a Graph
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Simulation: CK12 Irwin and Ruthie
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Simulation: CK12 Model Rocket (I made it into a video) (downward acceleration is also called negative
acceleration or slowing down, but still moving in the same direction)
•
Review Guide: Motion CK12
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Graphing Motion Quiz
•
What does the slope of each graph represent? If you graphed the slope of a time vs. acceleration
graph, what would it show?What does the slope of each graph represent? If you graphed the slope of
a time vs.
Physics Classroom Interactives: !
Graph That Motion
Graphs and Ramps
acceleration graph, what would it show?
Review Guide Part I: Motion
(Reference point - stationary object from which motion of a second object is determined
units
(X is the change in position)
units
units
Review Guide Part I: Motion
MORE PRACTICE:
Distance and Displacement
What is the skier’s total distance?
What is the skier’s displacement?
Review Guide Part I: Motion
MORE PRACTICE:
Distance and Displacement
What is the skier’s total distance?
From A to B = 180m
From B to C = 140m
From C to D = +100m
TOTAL DISTANCE = 420m!
!
Review Guide Part I: Motion
MORE PRACTICE:
Distance and Displacement
What is the skier’s total displacement?
From A to D = 140m
Show the Motion Map
video now
Review Guide Part I: Motion
Review Guide Part I: Motion
Review Guide Part I: Motion
Review Guide Part I: Motion
changes
Review Guide Part I: Motion
Review Guide Part I: Motion
This m
eans it
slows
down
Review Guide Part I: Motion
Review Guide Part I: Motion
(x is distance or change in position) in this calculation)
(Object A had displacement of 16 m!
Object B had a displacement of 8 m)
Another way to look at this is that Object A is moving away from the origin and !
Object B is moving back toward the origin)
(this does NOT mean positive acceleration/speeding up)
(this does NOT mean negative acceleration/slowing down)
The negative sign shows that it went back !
toward the origin in a negative direction
Review Guide Part I: Motion
Review Guide Part I: Motion
Vf = 1 !
Vi = 1 !
(1-1) / 4 = 0m/s2
Both are in motion
velocity
distance/position (m)
Review Guide Part I: Motion
MORE PRACTICE:
What does Slope represent on a P/T graph?
C
B
D
E
A
F
G
Time (s)
Which letter represents the FASTEST
speed on this
Position (distance) v. Time graph?
distance/position (m)
Review Guide Part I: Motion
MORE PRACTICE:
What does Slope represent on a P/T graph?
C
B
D
E
A
F
G
Time (s)
Which letter represents the FASTEST
speed on this
Position (distance) v. Time graph?
D !
the steeper the line, the faster the speed
distance/position (m)
Review Guide Part I: Motion
MORE PRACTICE:
What does Slope represent on a P/T graph?
C
B
D
E
A
F
G
Time (s)
Describe the motion of the object at
points A, C, E, and G.
distance/position (m)
Review Guide Part I: Motion
MORE PRACTICE:
What does Slope represent on a P/T graph?
C
B
D
E
A
F
G
Time (s)
!
THE OJECT HAS NO MOTION
IT’S NOT MOVING.
Review Guide Part I: Motion
MORE PRACTICE:
What does Slope represent on a V/T graph?
Velocity (m/s)
1.
What is happening to the
object’s motion between
points A and B?!
!
!
!
2.
What is happening to the
object’s motion between
points D and E?!
!
!
3.
Time (s)
What is happening to the
object’s motion between
E and F?
Review Guide Part I: Motion
MORE PRACTICE:
What does Slope represent on a V/T graph?
What is happening to the
object’s motion between
points A and B?!
Positively accelerating at a
constant rate (speeding up)
away from the origin!
Velocity (m/s)
1.
!
2.
What is happening to the
object’s motion between
points D and E?!
Moving at a constant velocity!
!
Time (s)
3.
What is happening to the
object’s motion between
E and F? !
Negatively Accelerating at a
constant rate (slowing down)
away from the origin
Review Guide Part I: Motion
MORE PRACTICE:
What does Slope represent on a V/T graph?
Velocity (m/s)
1.
Which line shows the
least among of
acceleration (while still
accelerating)? !
!
!
2.
Does this graph show an
example of an object at
rest?!
!
Time (s)
Review Guide Part I: Motion
MORE PRACTICE:
What does Slope represent on a V/T graph?
Velocity (m/s)
1.
Which line shows the
least amount of
acceleration (while still
accelerating)? !
D!
!
!
2.
Time (s)
!
!
!
Does this graph show an
example of an object at
rest?!
!
!
NO! !
C is traveling at a ! !
!
constant velocity!
!
Velocity (m/s)
distance/position (m)
Review Guide Part I: Motion
MORE PRACTICE:
P/T and V/T Graph Comparisons
Time (s)
Time (s)
Draw a P/T graph of constant velocity
and a V/T graph of constant velocity
Velocity (m/s)
distance/position (m)
Review Guide Part I: Motion
MORE PRACTICE:
P/T and V/T Graph Comparisons
Time (s)
Time (s)
Draw a P/T graph of constant velocity
and a V/T graph of constant velocity
Velocity (m/s)
distance/position (m)
Review Guide Part I: Motion
MORE PRACTICE:
P/T and V/T Graph Comparisons
Time (s)
Time (s)
These graphs look similar, but mean two different things…
What does each one represent?
Velocity (m/s)
distance/position (m)
Review Guide Part I: Motion
MORE PRACTICE:
P/T and V/T Graph Comparisons
Time (s)
Constant Velocity
Time (s)
Constant Acceleration
These graphs look similar, but mean two different things…
What does each one represent?
Review Guide Part I: Motion
MORE PRACTICE:
P/T and V/T Graph Comparisons
60 s.
Runner A
60 s.
Runner B
What can you say about Runner B’s motion at the
compared to Runner A’s motion at the same time?
Review Guide Part I: Motion
MORE PRACTICE:
P/T and V/T Graph Comparisons
60 s.
Runner A
60 s.
Runner B
Runner B is traveling at a faster rate of speed than
Runner A but is not accelerating