Notes

Required HW Wk01
Section is due on Mon Oct 9, 2023 11:59 PM (6 days from now)
Please read the sections below, and answer the questions that follow .
Required Homework Instructions (click to expand)
This section contains the weekly required homework problems associated with the week's assigned reading and lecture content. The assignment closes at 11:59pm of the listed due date. The deadline is a hard deadline and no individual extension are permitted.



Multiple-choice questions are allowed 2 attempts.

Numerical-answer questions are allowed 5 attempts.

Hints, if available, will be accessible after your first attempt.

Solutions, if available, will be accessible only after the deadline for the homework set has passed.



Each correctly answered question (or question part for multi-part question) is worth one homework point.

All homework points are summed at the end of the quarter and the appropriate weighting and "emergency/illness" forgiveness policy will be applied as outlined in this quarter's syllabus.



Hide Stats and Solutions
Questions are due on Mon Oct 9, 2023 11:59 PM (6 days from now)
Question 1
(1 points)

#919211 {Dimensional Analysis}



Which of the following equations are valid based on dimensional analysis?



(i)
(
3
.
0

m
)
+
(
7
.
0

m
2
)
=
1
0
.
0

m
3
(3.0 m)+(7.0 m
​2
​​ )=10.0 m
​3
​​



(ii)
(
1
2
.
0

m
)
/
(
4
.
0

s
)
=
3
.
0

m
/
s
(12.0 m)/(4.0 s)=3.0 m/s



(iii)
(
7
.
0

m
)
⋅
(
2
.
0

m
)
=
1
4
.
0

m
2
(7.0 m)⋅(2.0 m)=14.0 m
​2
​​



(iv)
(
3
0
.
0

m
/
s
2
)
/
(
5
.
0

m
/
s
)
=
6
.
0

s
(30.0 m/s
​2
​​ )/(5.0 m/s)=6.0 s





Select the correct answer
only (iii) and (iv) are valid
all four are valid.
only (i) & (ii) are valid
only (ii), (iii), and (iv) are avlid
only (i), (iii), and (iv) are valid
only (ii) and (iii) are valid
No answer submitted
0 of 2 checks used

Question 2
(1 points)

(#553256) {Unit Conversion}



Which of the following sequence of conversion factors can be used to convert a measurement from the units of
m
o
l
e
c
u
l
e
s
m
3
​m
​3
​​
​
​molecules
​​ to the units of
m
o
l
e
s
c
m
3
​cm
​3
​​
​
​moles
​​ ?



Select the correct answer
×

(
1
0
0

m
c
m
)

×

(
m
o
l
e
6
.
0
2
2
×
1
0
2
3
m
o
l
e
c
u
l
e
s
)
× (
​cm
​
​100 m
​​ ) × (
​6.022×10
​23
​​ molecules
​
​mole
​​ )
×

(
1
0
0

m
c
m
)

×

(
1
0
0

m
c
m
)

×

(
1
0
0

m
c
m
)

×

(
m
o
l
e
6
.
0
2
2
×
1
0
2
3
m
o
l
e
c
u
l
e
s
)
× (
​cm
​
​100 m
​​ ) × (
​cm
​
​100 m
​​ ) × (
​cm
​
​100 m
​​ ) × (
​6.022×10
​23
​​ molecules
​
​mole
​​ )
×

(
m
1
0
0

c
m
)

×

(
m
1
0
0

c
m
)

×

(
m
1
0
0

c
m
)

×

(
m
o
l
e
6
.
0
2
2
×
1
0
2
3
m
o
l
e
c
u
l
e
s
)
× (
​100 cm
​
​m
​​ ) × (
​100 cm
​
​m
​​ ) × (
​100 cm
​
​m
​​ ) × (
​6.022×10
​23
​​ molecules
​
​mole
​​ )
×
(
m
1
0
0

c
m
)

×

(
m
1
0
0

c
m
)

×

(
m
1
0
0

c
m
)

×

(
6
.
0
2
2
×
1
0
2
3
m
o
l
e
c
u
l
e
s
m
o
l
e
)
×(
​100 cm
​
​m
​​ ) × (
​100 cm
​
​m
​​ ) × (
​100 cm
​
​m
​​ ) × (
​mole
​
​6.022×10
​23
​​ molecules
​​ )
×

(
m
1
0
0

c
m
)

×

(
m
1
0
0

c
m
)

×

(
m
1
0
0

c
m
)

×

(
m
o
l
e
c
u
l
e
s
6
.
0
2
2
×
1
0
2
3
m
o
l
e
)
× (
​100 cm
​
​m
​​ ) × (
​100 cm
​
​m
​​ ) × (
​100 cm
​
​m
​​ ) × (
​6.022×10
​23
​​ mole
​
​molecules
​​ )
×

(
m
1
0
0

c
m
)

×

(
6
.
0
2
2
×
1
0
2
3
m
o
l
e
c
u
l
e
s
m
o
l
e
)
× (
​100 cm
​
​m
​​ ) × (
​mole
​
​6.022×10
​23
​​ molecules
​​ )
No answer submitted
0 of 2 checks used

Question 3
(1 points)

(#589060) {Unit Conversion}



What is the floor area of your dorm room if it measures 12 ft x 19 ft? Give your answer in SI units.

Select the correct answer
2
2
8

m
2
228 m
​2
​​
1
2

m
2
12 m
​2
​​
3
3

m
2
33 m
​2
​​
6
9

m
2
69 m
​2
​​
2
1

m
2
21 m
​2
​​
No answer submitted
0 of 2 checks used

Question 4
(1 points)

(#279181) {Significant Figures}



How many significant figures are there in the following values: 1204 , 20.0 , 321 , 0.03?

Select the correct answer
4, 3, 3, 1
1, 3, 2, 1
4, 3, 3, 2
4, 2, 3, 2
No answer submitted
0 of 2 checks used

Question 5
(1 points)

(#428721) {Uncertainty}



Two groups of students is measure the volume of a cylindrically-shaped jar using two different sets of measuring tools. Each student in each group makes an independent measurement, and the results are shown below. The instructor secretly knows that the volume of the jar is exactly 2500 cm3 (2.5 × 103 cm3) Which group's set of measurements were more accurate and which were more precise?



Group 1 : 2150 cm3 , 2200 cm3 , 2275 cm3 , 2400 cm3 , 2480 cm3 , 2500 cm3 , 2525 cm3

Group 2 : 2450 cm3 , 2467 cm3 , 2483 cm3 , 2495 cm3 , 2510 cm3 , 2525 cm3 , 2560 cm3

Select the correct answer
Group 1 is less accurate and less precise than Group 2.
Group 1 is more accurate, but less precise than Group 2,
Group 1 is more accurate and more precise than Group 2.
Group 1 is less accurate, but more precise than Group 2.
No answer submitted
0 of 2 checks used

Question 6
(1 points)

(#673150) {Freefall}



A person stands on top of a tall building holding two rocks at a height of 50 meters. At the same moment, one rock is dropped from rest while the other is thrown downwards with an initial velocity of 8.0 m/s. Neglecting air resistance, calculate how long after the first rock lands does the second rock strike the ground?

Please enter a numerical answer below. Accepted formats are numbers or "e" based scientific notation e.g. 0.23, -2, 1e6, 5.23e-8

Enter answer here
No answer submitted
0 of 5 checks used

Question 7
This question contains multiple parts. Make sure to read all the instructions and answer each part.

(#962956) {Uncertainty}



Riley has been asked to help redecorate a room, and is given the following room measurements with associated uncertainties:


W
i
d
t
h
=
�
±
�
�
Width=W±δW


D
e
p
t
h
=
�
±
�
�
Depth=D±δD


H
e
i
g
h
t
=
�
±
�
�
Height=H±δH



Part a
(1 points)
Riley would like to run a thin strip of decorative wallpaper along half of the perimeter of the room, and therefore calculates a required length of
�
=
�
+
�
L=W+D. Which of the following expressions properly describes the uncertainty in Riley's calculated length?







Select the correct answer
�
�
=
�
�
+
�
�
δL=δW+δD
�
�
=
(
�
�
)
2
+
(
�
�
)
2
δL=√
​(δW)
​2
​​ +(δD)
​2
​​
​
​​
�
�
�
=
(
�
�
�
)
2
+
(
�
�
�
)
2
​L
​
​δL
​​ =√
​(
​W
​
​δW
​​ )
​2
​​ +(
​D
​
​δD
​​ )
​2
​​
​
​​
�
�
=
(
�
�
)
2
×
(
�
�
)
2
δL=√
​(δW)
​2
​​ ×(δD)
​2
​​
​
​​
�
�
�
=
�
�
�
+
�
�
�
​L
​
​δL
​​ =
​W
​
​δW
​​ +
​D
​
​δD
​​
�
�
�
=
(
�
�
�
)
2
×
(
�
�
�
)
2
​L
​
​δL
​​ =√
​(
​W
​
​δW
​​ )
​2
​​ ×(
​D
​
​δD
​​ )
​2
​​
​
​​
No answer submitted
0 of 2 checks used
Part b
(1 points)
Next, Riley would like to lay down wall-to-wall carpet for this rectangular room, and therefore calculates a required area of
�
=
�
×
�
A=W×D. Which of the following expressions properly describes the uncertainty in Riley's calculated area?







Select the correct answer
�
�
=
�
�
+
�
�
δA=δW+δD
�
�
=
(
�
�
)
2
+
(
�
�
)
2
δA=√
​(δW)
​2
​​ +(δD)
​2
​​
​
​​
�
�
�
=
(
�
�
�
)
2
+
(
�
�
�
)
2
​A
​
​δA
​​ =√
​(
​W
​
​δW
​​ )
​2
​​ +(
​D
​
​δD
​​ )
​2
​​
​
​​
�
�
=
(
�
�
)
2
×
(
�
�
)
2
δA=√
​(δW)
​2
​​ ×(δD)
​2
​​
​
​​
�
�
�
=
�
�
�
+
�
�
�
​A
​
​δA
​​ =
​W
​
​δW
​​ +
​D
​
​δD
​​
�
�
�
=
(
�
�
�
)
2
×
(
�
�
�
)
2
​L
​
​δL
​​ =√
​(
​W
​
​δW
​​ )
​2
​​ ×(
​D
​
​δD
​​ )
​2
​​
​
​​
No answer submitted
0 of 2 checks used
Part c
(1 points)
As a final surprise celebration, Riley decides to fill the room with balloons, and therefore calculates the volume of the room as
�
=
�
×
�
×
�
V=W×H×D. Which of the following expressions properly describes the uncertainty in Riley's calculated volume?







Select the correct answer
�
�
=
�
�
+
�
�
+
�
�
δV=δW+δD+δH
�
�
�
=
�
�
�
×
�
�
�
×
�
�
�
�
�
�
�
​V
​
​δV
​​ =
​W
​
​δW
​​ ×
​D
​
​δD
​​ ×
​H
​
​deltaH
​​
�
�
�
=
(
�
�
�
)
2
+
(
�
�
�
)
2
+
(
�
�
�
)
2
​V
​
​δV
​​ =√
​(
​W
​
​δW
​​ )
​2
​​ +(
​D
​
​δD
​​ )
​2
​​ +(
​H
​
​δH
​​ )
​2
​​
​
​​
�
�
=
(
�
�
+
�
�
)
×
�
�
δV=(δW+δD)×δH
�
�
�
=
�
�
�
+
�
�
�
+
�
�
�
�
�
�
�
​V
​
​δV
​​ =
​W
​
​δW
​​ +
​D
​
​δD
​​ +
​H
​
​deltaH
​​
�
�
�
=
(
�
�
�
)
2
+
(
�
�
�
)
2

+

�
�
�
​V
​
​δV
​​ =√
​(
​W
​
​δW
​​ )
​2
​​ +(
​D
​
​δD
​​ )
​2
​​
​
​​ +
​H
​
​δH
​​
No answer submitted
0 of 2 checks used

Question 8
(1 points)

(#387642) {Uncertainty}



A student uses a tape measure to record the stopping distance of a car moving at a particular speed before hitting its brakes. The experiment is repeated multiple times and the student reports the stopping distance as 4.46 m
±
± 0.202. What is the percent uncertainty in this experiment?

Please enter a numerical answer below. Accepted formats are numbers or "e" based scientific notation e.g. 0.23, -2, 1e6, 5.23e-8

Enter answer here
%
No answer submitted
0 of 5 checks used

Question 9
(1 points)

(#343881) {Approximation} / {Unit Conversion}



Estimate the extension rate (increase in length per time) of human hair in units of nanometers per second. (You can start by approximating the growth rate of your hair in more familiar units by estimating how much you need to get trimmed off at a monthly haircut appointment. )

Select the correct answer
0.5
n
m
s
​s
​
​nm
​​
500
n
m
s
​s
​
​nm
​​
5
n
m
s
​s
​
​nm
​​
0.05
n
m
s
​s
​
​nm
​​
50
n
m
s
​s
​
​nm
​​
5000
n
m
s
​s
​
​nm
​​
No answer submitted
0 of 2 checks used

Question 10
(1 points)

(#629311) {Approximation} / {Unit Conversion}



An average-sized college student wants to lay carpeting to cover the entire floor of their dorm room and heads to the carpet store; but they forget to measure the dimensions of their room beforehand. Fortunately, they do remember that the floor of the room is perfectly square and that when they laid down on the floor so that their body was along one of the walls, their head-to-toe distance covered almost exactly half of the wall's length. They end up purchasing an appropriate amount of a particular carpet that has a weight rating of 5.0 kg/m2. Approximate how many kilograms of carpet does this student take back to their dorm room? (A useful conversion factor : 1 inch = 2.54 cm). Choose the closest answer below:



Select the correct answer
56 kg
14 kg
28 kg
224 kg
7 kg
112 kg
No answer submitted
0 of 2 checks used

Question 11
(1 points)

(#928947) {Position, Velocity, Acceleration}



The position of a particle moving along the x-axis is given by
�
(
�
)
=
4
.
0
−
2
.
0
�

m
e
t
e
r
s
x(t)=4.0−2.0t meters. What is the displacement of the particle between
�
=
3
.
0

s
t=3.0 s and
�
=
6
.
0

s
t=6.0 s ?

Select the correct answer
-8.0 m
-2.0 m
2.0 m
6.0 m
-6.0 m
No answer submitted
0 of 2 checks used

Question 12
This question contains multiple parts. Make sure to read all the instructions and answer each part.

(#108324) {Position, Velocity, Acceleration} / {Distance vs Displacement}



Consider the four separate tracks of 1-dimensional motions shown in the figure below.



Part a
(1 points)
Which path or paths in the diagram represent a distance travelled of 8m?

Image size: SMLMax



Select the correct answer
A
B
C
C and D
D
No answer submitted
0 of 2 checks used
Part b
(1 points)
Which path or paths in the diagram have a displacement of 8m?

Select the correct answer
A
B
C
B and C
D
No answer submitted
0 of 2 checks used

Question 13
(1 points)

(#303438) {Position, Velocity, Acceleration} / {Position-Velocity Relationship}



A student drove to the university from her home and noted that the odometer reading of her car increased by 8.00 miles. The trip took 20 min. (Note: 1 mile = 1.609 km). If the straight-line distance from her home to the university is 10.0 km, and the university is directly south of her home, what is the magnitude and direction of her average velocity vector?

Select the correct answer
30.0 km/h, but the direction depends on the actual path of the road driven.
30.0 km/h pointing North
30.0 km/h, pointing South
Neither the magnitude nor the direction can be determined with the given information.
38.6 km/h, but the direction depends on the actual path of the road driven.
38.6 km/h, pointing South
No answer submitted
0 of 2 checks used

Question 14
(1 points)

(#967055) {Position, Velocity, Acceleration} / {Velocity-Acceleration Relationship}



At
�
=
1
0

s
t=10 s, a particle is moving from left to right with a speed of
5
.
0

m
/
s
5.0 m/s. At
�
=
2
0

s
t=20 s, the particle is moving right to left with a speed of
8
.
0

m
/
s
8.0 m/s. The positive x-axis points to the right and that the particle’s acceleration is constant during this time window (from
�
=
1
0

s
t=10 s to
�
=
2
0

s
t=20 s). Determine the particle's acceleration during this time window.





Select the correct answer
0

m
/
s
2
0 m/s
​2
​​
−
1
.
3

m
/
s
2
−1.3 m/s
​2
​​
−
3
.
1

m
/
s
2
−3.1 m/s
​2
​​
4
.
0

m
/
s
2
4.0 m/s
​2
​​
1
.
3

m
/
s
2
1.3 m/s
​2
​​
No answer submitted
0 of 2 checks used

Question 15
This question contains multiple parts. Make sure to read all the instructions and answer each part.

(#851092) {Position, Velocity, Acceleration} / {Position-Velocity Relationship} / {Velocity-Acceleration Relationship}



A robotic train programmed to move along a straight track so that its position as a function of time is given by:



�
(
�
)
=
�
�
4
+
�
�
3
+
�
�
x(t)=bt
​4
​​ +ct
​3
​​ +dt



where the constants b, c, and d have the values:

�
=
b= 7.09

c
m
/
s
4
cm/s
​4
​​

�
=
c= 6.35

c
m
/
s
3
cm/s
​3
​​

�
=
d= 5.00

c
m
/
s
cm/s











Part a
(1 points)
Which of the following functions accurately represents the velocity of the train as a function of time?



Select the correct answer
�
(
�
)
=
4
�
�
3
+
3
�
�
2
+
�



v(t)=4bt
​3
​​ +3ct
​2
​​ +d
�
(
�
)
=
1
5
�
�
5
+
1
4
�
�
4
+
1
2
�
�
2



v(t)=
​5
​
​1
​​ bt
​5
​​ +
​4
​
​1
​​ ct
​4
​​ +
​2
​
​1
​​ dt
​2
​​
�
(
�
)
=
1
4
�
�
5
+
1
3
�
�
4
+
�
�
2



v(t)=
​4
​
​1
​​ bt
​5
​​ +
​3
​
​1
​​ ct
​4
​​ +dt
​2
​​
�
(
�
)
=
1
2
�
�
2
+
6
�
�



v(t)=12bt
​2
​​ +6ct
�
(
�
)
=
3
�
�
3
+
2
�
�
2



v(t)=3bt
​3
​​ +2ct
​2
​​
�
(
�
)
=
4
�
�
4
+
3
�
�
3
+
�
�



v(t)=4bt
​4
​​ +3ct
​3
​​ +dt
No answer submitted
0 of 2 checks used
Part b
(1 points)
Calculate the velocity of the train at the instant :
�
=
3
.
0

s
t=3.0 s

Please enter a numerical answer below. Accepted formats are numbers or "e" based scientific notation e.g. 0.23, -2, 1e6, 5.23e-8

Enter answer here
c
m
/
s
cm/s
No answer submitted
0 of 5 checks used
Part c
(1 points)
Calculate the acceleration of the train at the instant :
�
=
2
.
0
t=2.0





Please enter a numerical answer below. Accepted formats are numbers or "e" based scientific notation e.g. 0.23, -2, 1e6, 5.23e-8

Enter answer here
c
m
/
s
2
cm/s
​2
​​
No answer submitted
0 of 5 checks used

Question 16
This question contains multiple parts. Make sure to read all the instructions and answer each part.

(#907846) {Interpreting Graphs} / {Slope}



Refer to the plot of velocity vs time for a particle shown below for all parts of this question.



Image size: SMLMax



Part a
(1 points)
At which time point listed below does the acceleration have the greatest positive value?

Select the correct answer
a
d
f
l
i
No answer submitted
0 of 2 checks used
Part b
(1 points)
What is the acceleration at that point (the point with the greatest positive acceleration)?

Select the correct answer
+
0
.
3
3
3

m
/
s
2
0.333 m/s
​2
​​
+
1

m
/
s
2
1 m/s
​2
​​
+
2

m
/
s
2
2 m/s
​2
​​
+
6

m
/
s
2
6 m/s
​2
​​
+
3

m
/
s
2
3 m/s
​2
​​
No answer submitted
0 of 2 checks used
Part c
(1 points)
At which of the time points listed below is the acceleration equal to zero?

Select the correct answer
a
c
g
l
h
No answer submitted
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Question 17
This question contains multiple parts. Make sure to read all the instructions and answer each part.

(#159904) {Interpreting Graphs}



A graph below shows the motion of a runner as he does his warm-up exercises along a straight segment of a running track.

Image size: SMLMax



Part a
(1 points)
What is the runner's acceleration at time
�
=
3
0

s
e
c
o
n
d
s
t=30 seconds?



Please enter a numerical answer below. Accepted formats are numbers or "e" based scientific notation e.g. 0.23, -2, 1e6, 5.23e-8

Enter answer here
�
/
�
2
m/s
​2
​​
No answer submitted
0 of 5 checks used
Part b
(1 points)
At which of the following points in time is the runner stopped for an extended period?

Select the correct answer
t = 10 s
t=30 s
t = 40 s
t = 80 s
t = 60 s
No answer submitted
0 of 2 checks used
Part c
(1 points)
At what time does the runner slow to a momentary stop, turn around, and immediately start running the other way?

Please enter a numerical answer below. Accepted formats are numbers or "e" based scientific notation e.g. 0.23, -2, 1e6, 5.23e-8

Enter answer here
seconds
No answer submitted
0 of 5 checks used
Part d
(1 points)
What is the runners net displacement between the times
�
=
0

s
e
c
o
n
d
s
t=0 seconds and
�
=
1
0
0

s
e
c
o
n
d
s
t=100 seconds?

Please enter a numerical answer below. Accepted formats are numbers or "e" based scientific notation e.g. 0.23, -2, 1e6, 5.23e-8

Enter answer here
meters
No answer submitted
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Part e
(1 points)
Does the runner ever return to his starting position (i.e., his location at time
�
=
0

s
e
c
o
n
d
s
t=0 seconds) along this straight track at anytime during the 100 seconds shown in the graph?

Select the correct answer
Yes
No
No answer submitted
0 of 1 checks used
LAST ATTEMPT!

Question 18
This question contains multiple parts. Make sure to read all the instructions and answer each part.

(#347045) {Motion Diagrams}



Consider the motion diagram of three objects moving along parallel tracks over the same 8-second period. Each object drops a dot at its current location at 1-second intervals.



Image size: SMLMax



Part a
(1 points)
Which object is decelerating during the period shown?



Select the correct answer
Object A is decelerating
Object B is decelerating
Object C is decelerating
No answer submitted
0 of 2 checks used
Part b
(1 points)
Which object is smallest initial speed at the left side of the track as shown?

Select the correct answer
Object A has the smallest initial speed
Object B has the smallest initial speed
Object C has the smallest initial speed
No answer submitted
0 of 2 checks used
Part c
(1 points)
Which object has the largest final speed when it passes the right edge of the track as shown?

Select the correct answer
Object A has the largest final speed
Object B has the largest final speed
Object C has the largest final speed
No answer submitted
0 of 2 checks used
Part d
(1 points)
Which object arrives at the right edge of the track (as shown in the figure) first?

Select the correct answer
Object A arrives at the right edge of the track first
Object B arrives at the right edge of the track first
All three objects arrive at the right edge of the track at the same time.
Object C arrives at the right edge of the track first
No answer submitted
0 of 2 checks used

Question 19
(1 points)

(#694476) {Kinematic Equations}



Which of the following statements is true about the use of the Kinematic Equations derived in this chapter?

Select the correct answer
The Kinematic Equations only apply for objects whose direction does not change sign.
The Kinematic Equations only apply when the object starts from rest.
The Kinematic Equations only apply when the acceleration of the object is constant (or zero).
The Kinematic Equations only apply when the velocity of the object is constant (or zero).
The Kinematic Equations only apply when the acceleration is due to gravity.
No answer submitted
0 of 2 checks used

Question 20
(1 points)

(#481132) {Kinematic Equations}



In the distant future, humans have established a colony on Jupiter's sixth's moon, Europa. In the dining hall of that colony, an apple that is dropped from rest from a height of 1.5 meters above the ground hits the ground with a speed of 2.0 m/s. Which of the following is a kinematic equation that can most directly be used to determine the acceleration due to Europa's gravity?





Select the correct answer
�
�
=
�
�
+
�
⋅
Δ
�
v
​f
​​ =v
​i
​​ +a⋅Δt
�
�
=
�
�
+
�
�
⋅
Δ
�
+
1
2
⋅
�
⋅
(
Δ
�
)
2
x
​f
​​ =x
​i
​​ +v
​i
​​ ⋅Δt+
​2
​
​1
​​ ⋅a⋅(Δt)
​2
​​
�
�
2
=
�
�
2
+
2
⋅
�
⋅
(
�
�
−
�
�
)
v
​f
​2
​​ =v
​i
​2
​​ +2⋅a⋅(x
​f
​​ −x
​i
​​ )
�
�
=
�
�
+
1
2
⋅
(
�
�
+
�
�
)
⋅
Δ
�
x
​f
​​ =x
​i
​​ +
​2
​
​1
​​ ⋅(v
​i
​​ +v
​f
​​ )⋅Δt
No answer submitted
0 of 2 checks used

Question 21
(1 points)

(#769045) {Kinematic Equations}



An object traveling eastward with an initial velocity of 10.9 m/s experiences a constant acceleration of 1.65 m/s
2
​2
​​ in the westward direction for 1.83 seconds. Calculate the displacement of object over this elapsed time. Assume that the positive x-axis points to the east (i.e, to the right on a map)

Please enter a numerical answer below. Accepted formats are numbers or "e" based scientific notation e.g. 0.23, -2, 1e6, 5.23e-8

Enter answer here
m
No answer submitted
0 of 5 checks used
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