where each image revealed the position of the car at one-second intervals.
NAME: ____________________________________________________
K.I.T. This
S1 P7
is the motion map that represents the car.
DUE DATE: _______________
We model the position of the object with a small
K.I.T.s – Keep In Touch – are weekly assignments aimed at improving retention of physics
point. At each position, the object’s velocity is represented by a vector.
knowledge and skills. Each question is worth 2 points. You must show your work – no points will
be awarded for only providing the answer. Set up each conversion to the right of answer choices.
LEARNING TARGET M – 7
Interpret displacement, velocity, and acceleration on motion diagrams.
If the car were traveling at greater velocity, the strobe photo might look like this:
________ 1. Describe the motion of the object represented in the following motion map.
The corresponding motion map has the points spaced farther apart, and the velocity vectors are
A. The object is at rest.
longer, implying that the car is moving faster.
B. The object is moving with constant positive velocity.
C. The object is moving with constant negative velocity.
D. The object is speeding up.
E. The object is slowing down.
If the car were moving to the left at constant velocity, the photo and motion map might look like
EXPLAIN:
this:
________ 2. Describe the velocity of the object represented in the following motion map.
A. The object has zero velocity.
More complicated motion can be represented as well.
B. The object has positive velocity.
C. The object has negative velocity.
D. The velocity of the object cannot be determined.
EXPLAIN:
Here, an object moves to the right at constant velocity, stops and remains in place for two
seconds, then moves to the left at a slower constant velocity.
________ 3. Describe the acceleration of the object represented in the following motion map.
'Modeling Workshop Project 2002
A.
B.
C.
D.
1
The object has zero acceleration.
The object has positive acceleration.
The object has negative acceleration.
The acceleration of the object cannot be determined.
EXPLAIN:
Unit II Reading-Motion Maps v2.0
________ 4. Which of the following statements is NOT true regarding the motion of the object represented in
the following motion map?
A.
B.
C.
D.
The object moves with a greater negative velocity then positive velocity.
The object moves with constant positive velocity for 4 seconds.
The object remains at rest for 2 seconds.
The object moves with constant negative velocity for 4 seconds.
EXPLAIN:
Consider the interpretation of the motion map below. At time t = 0, cyclist A starts moving to
the right at constant velocity, at some position to the right of the origin.
________ 5. Which of the following statements regarding the motions of objects A and B is true?
A. Object
withand
a greater
than at
Object
B
Cyclist
B startsAatmoves
the origin
travelsvelocity
to the right
a constant,
though greater velocity.
B.
Object
B
moves
with
a
greater
velocity
than
Object
A
At t = 3 s, B overtakes A (i.e., both have the same position, but B is moving faster).
C. Object A and B move with the same velocity.
D. The relative
velocities
of Objects
B cannot
beBdetermined.
A graphical
representation
of the
behaviorAofand
cyclists
A and
would like this:
EXPLAIN:
LEARNING TARGET M-7
Interpret displacement, velocity, and acceleration on motion diagrams.
Questions Correct
Points
Explanation
5
4.0
Complex content
4
3.5
Target and some complex
3
3.0
Target goal
2
2.5
Simple and some target
You could
algebraically as follows:
1 also represent the behavior
2.0
Simple/Foundational
0, butxshowed
1.0
= vAt + work
x0 , forfor
A all
where vB > vA
= vshow
for for
B all
Bt ,
0, did xnot
work
0.5
With help, partial success at 2.0 & 3.0 content
With help, partial success at 2.0 content
Throughout this semester, you will be representing the behavior of objects in motion in multiple
ways: diagramatically (motion maps), graphically and algebraically.