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Unit 2 Outline — Physics
Chapter 8: VelocityDAY OUTLINE DATE
1 Assignment: Read text p.344-351Do Ch.8 KeyTemis (p.197)Do Scalars vs Vectors w.s. (p.198)
2 8.1 Notes (p.199-200)Assignment: Read text p.352-361
Do 8.1 Distance, Position & Displacement w.s. (p.198)Do 8.1 Positive, negative & 0 slopes w.s. (p.201)Do Uniform Motion w.s. (p.202)
Study_for_8.1_Quiz_next_class3 8.1 Quiz
8.2 Notes (slides 1-9) (p.203-204)Assignment: Read text p.362-367
Do Calculating Average Velocity w.s. (p.205)Do Slopes of P-T graphs w.s. (p.206)Do Finding the Slope w.s. (p.2O’7)
4 8.2 Notes (slides 10-17) (p.204)Assignment: Read p.368-375
Do Analyzing Position-time Graphs w.s. (p.208)Do Constructing P-T graphs w.s. (p.209)Do 8.1 & 8.2 Assessment w.s.’s (p.210-212)
5 Ch.8 Toy Car Lab (p.213-214)6 Assignment: Read 8.1, 8.2 Summary Notes (p.331-332)
Do Ch.8 Review p.376-3’7’7#4,7-l 5,18-23 (p.215-216)Study for Ch08 Text next classCh.8 pckg due next class (do self evaluation)
7 Ch.8 Test (30 multiple choice questions on scantron — Bring a Pencil!)Ch. 8 Pckg Due
Summary Study Notes p.331-332
‘95
Chapter 8: V&ocftyKey Term Definition Example/Graphic
1. Displacement
2. Distance
3. Position
4. Scalars
5. Position-time graph
6. Uniform motion
7. Slope
8. Vectors
9. Velocity
10. Average velocity
11. Speed
Quae
tlty
Syni
ol3l
UM
tSc
alar
orV
ecto
r
time
time
Intei
val
dista
nce
pocit
on
disp
lacem
ent
3.Id
entif
yw
heth
erth
est
atem
ent
isde
scri
bing
asc
alar
ora
vect
or.
Plac
ean
S”
for
scal
aran
da
V’
for
vect
orIn
the
spac
epr
ovid
ed.
a)A
squi
rrel
runs
7m
east
ofa
tree
.
b)—
The
scho
olis
5km
from
the
airp
ort.
c)It
took
the
clas
s30
min
utes
toco
mpl
ete
the
mot
ion
lab.
d)-—
Alit
tlegi
rlpu
llshe
rw
agon
10m
wes
tof
the
tree
hous
e.
4.In
dica
tew
heth
erth
edi
rect
ion
Ispo
sltiv
e(.i
.)or
nega
tive
(—).
a)*
rlit
wes
t-4
I
Dat
e
Use
with
text
book
page
s34
4-34
7.
Sci
ors
vers
isvc*o
1.D
efin
eth
efo
llow
ing
tem
,s.
a)sc
alar
__
_____
14ve
ctor
__________________
Nam
esD
ate
2.C
ompl
ete
the
follo
win
gta
ble.
Aag
lcaew
leg,
Use
with
text
book
page
s34
6-34
9.
Dsi
cnce
,post
bd,ad
dpIa
c4im
nnt
1.C
ompl
ete
the
follo
win
gta
ble
byfi
lling
inth
ebl
ank
boxe
s.In
the
last
colu
mn
ofth
eta
ble,
circ
leth
eap
prop
riat
ew
ord
from
each
pair
.
çtt
44
4D
tmct
lcne
ofM
atlo
n(a
)(a
)(a
)(c
i)(c
i)(m
)
6.0
7.5
+18.
4+2
2.6
left/r
ight
-
8.5
2.8
+24.
3+5
.8up
/dow
n
20.2
18.2
+248
—14
.3no
rth/so
uth
12.4
18.8
+46.
2—
8.6ea
sVw
est
2.U
seth
efo
llow
ing
diag
ram
toan
swer
the
qu
esti
on
sbe
low
.
Agi
rlw
alks
2a
[N],
4a
[E],
2a
[S]
and
then
4a
[Wj.
a)W
hat
isth
eto
tal
dis
tan
ceth
egi
rltr
avel
led?
________
In)W
hat
isth
edi
spla
cem
ent
ofth
egi
rl?
8.1 The Language of Motion — Student Notes
Direction Makes a Difference!Two main types of quantities:
Scalars: Describe
____________________________.
(Magnitude is the size of a measurement)
Example:
___________________________________
Vectors: Describe
_____________________________
Example:
____________________________________
Vectors vs. Scalars
You can always tell if a quantity is a vector because there will be an arrow drawn above it.
•Example:
_______________________________________
•A scalar has no arrow.
•Example:
________________________________________
Distance vs. Displacement
•Distance (d) is a
____________
that tells you how far something has travelled.
• Example:
________________________________________
Displacement ( d) is a
___________
that describes your position relative to where you started.
•
Example:
__________________________________________
4We measure both
____________
and
___________________
in metres (m).Example: w -E w - E
STORE STOREHOME HOME
I—4- 10km 10km
A car leaves home and drives 10 km to the store and then returns home. The car has driven a total
_________________________
but its final
__________________________________
Time Interval
•Time interval or change in time is calculated by:Where: At =
___________________
(the A symbol is the greek letter delta. It means “change”).
ti =
tf =
Example t=Os t=2s t=Ss
IiII4I.EOm im 2m 3m 4m 5ri Gm lm Sm
The time interval to move from the fire hydrant to the sign is calculated by: —
= change in position or displacement.
= initial position
_______
final position
I -
Between 2 s and 5 s, the skateboarder’s: displacement is and
distance travelled is
Displacement and DistanceSee Figure 8.1B p.352 in text
Uniform Motion
Uniform motion is a term that describes objects that
1n other words, they
_____________________________________
Example:(we will discuss velocity more later)
The position of the ball in this photo is shown at•if this motion is uniform motion?
-. How would you determine
What would the picture look like if the ball was NOT in uniform motion?
Poston vs. Time
/U •i 2 4
TImA (c’)
Displacement
Displacement or change in position is calculated by:
•Where:
________
Example: t=Os t=2s
ik’‘
Om irn 2m 3m 4,11 5rn 6m 7rn Sm
Graphing Uniform Motion
Motion of an object can be analyzed by100
A position-time graph plots‘ 80
(y-axis) and
on the horizontal axis (x-axis). .
°Uniform motion is represented by a 40
on a position-time graph. 20
Use with textbook page 353-354.
cid zwo Ios
Use the following position-lime graphs to answer the questions below.
GraphA Grqhfl
Position vs. Time Position vs. Thne
oI p4
160 /
________
I: , •i’i• tO 2.0 3.0 4.0 5.0
Time ($1.
?os’tiot ws. Tme
2.0
1.5
cO.5
, .- time(s)
Match the Desfldon below with the corresponding Graph shown above, EachGraph can be used as often as necessary. Wrilte the correct letter in the spaceprovided.
1.
________
a line with a zero slope
2.
________
a line with a positive slope
3. . a line with a negative slope
4. - a line that represents uniform motion
5.
________
the motion of an object at rest (not moving)
6.
_________
the motion of an object moving to the left of the reference point/
7. — the motion of Sin ObjeCt: moving to the right of the reference point
Ana
lyzi
ngN
ame
Dat
e
_____
Ast
uden
tis
wai
ting
ata
bus
stop
and
star
tsto
pac
eba
ckan
dfo
ith.
Use
the
follo
win
gpo
siti
on-t
ime
grap
hsh
owin
gth
est
uden
t’s
mot
ion
toan
swer
ques
tions
Sto
11.
__________
-I,
-2
1- -4
__
__
__
__
-s -6
Use
the
follo
win
gpo
sitio
n-tim
egr
aph
show
ing
the
moti
on
of
ano
bje
ct,
hoitl
aily
mov
ing
toth
eri
ght,
toan
swer
the
ques
tion
sbe
low
2to
4.
2.F
orea
chti
me
Inte
rval
,de
scri
beth
esl
ope
ofth
em
e(p
ositi
ve,
nega
tive
,or
zero
)an
dth
em
otio
nof
the
obje
ct.
Th
Iste
rval
Sk>I
eof
Line
Des
crft
lsn
of5e
flon
Os-
lOs
Ipos
ituTh
eobj
ectis
mlo
bht
ottlw
oilg
lnw
itho
tt1cm
niot
lOn.
lQs—
155
15s—
30a
30s—
40a
40s—
55S
3.D
urin
gw
hich
tim
ein
terv
aldi
dth
eob
ject
trav
elth
esh
ort
est
dist
ance
?
_______
4.D
urIn
gw
hich
tim
ein
terv
aldi
dth
eob
ject
trav
elth
elo
nges
tdis
tance
?
________
aW
hat
isth
est
uden
t’s
posi
tion
at7
s?
__
__
__
__
aW
hat
Isth
est
uden
t’s
dis
pla
cem
ent
betw
een
12a
and
14
s?
_______
10.
Wha
tis
the
tota
ldi
stan
ceco
vere
dby
the
stud
ent
duri
ngth
efi
rst
16
8?
_______
11.
Wha
tis
the
stud
ent’
sdi
spla
cem
ent
duri
n9th
eti
me
inte
rval
0a
to20
a’?
__
__
__
__
Nam
eD
ote
j
Use
with
test
book
page
350.
Uni
form
mo*
Jon
1.Id
entif
yea
chof
the
situ
atio
nsbe
low
asei
ther
unif
orm
mot
ion
orno
n-un
ifor
mm
otio
n.
a)a
snow
bal
lro
llsdo
wn
ahi
ll
_________________
b)a
man
sits
onb
ench
wat
chin
gpi
geon
s
C)a
wom
anw
alks
thro
ugh
acr
owde
dm
all
duri
ngth
eC
hris
tmas
seas
on
801
60
10ZO
3040
00lb
,wCs)
lime
Is>
5.D
urin
gw
hich
tim
eIn
terv
als
isth
est
uden
tst
andi
ngst
ill?
6D
escr
ibe
the
mot
ion
ofth
est
uden
tdu
ring
the
tim
ein
terv
al2s
to5s.
7.D
escr
ibe
the
mot
ion
ofth
est
uden
tdur
ing
the
time
inte
rval
14
8to
16s.
8.2 Average Velocity — Student Notes
Speed (o ) is the
_______________________________divided
by
• Speed is a
_______________
quantity (no direction).
Velocity ( ) is the
_______________________________
divided by
• Velocity describes how
______________
an object’s position is
• Velocity is a
______________
quantity (direction).
• The units for velocity and speed are
_______________________________
Calculating the Slope of the Position-Time Graph
The slope of a graph is represented by
_______________________________
= change in y-axis and
_______________
On a position-time graph the slope is the change in position (
Position vs. Time
. jogerE
/4
0
lime (s)
The slope of a position-time graph is the object’s
____________________
( ).
Remember: —
________________________),
is a
__________________
include a diretion.
If we were to discuss
Vav , (______________________________
because speed is a
_______________________
- AdThe relationship between average velocity, displacement, and time is given by: Vav
1. What is the average velocity of a dog that takes 4.0 s to run forward 14 m?
Speed Formula:
Velocity Formula:
= change in x-axis
) divided by the change in time ( ).Ad
slope =At
Which jogger’s motion has agreater slope?
Which jogger is moving faster?
What is the slope of each line?
What is each jogger’s Vav?
and we must therefore always
), we do not need to include direction,
2. A boat travels 280 m East in a time of 120 s. What is the boat’s average velocity?
The relationship between displacement, average velocity, and time is given by: = (av XAt)1. What is the displacement of a bicycle that travels 8.0 rn/s [N] for 15 s?
2. A person, originally at the starting line, runs west at 6.5 mIs. What is the runner’sdisplacement after 12 s?
The relationship between time, average velocity, and displacement is given by: zXt =
1. How long would it take a cat walking north at 0.80 m/s to travel 12 m north?
2. A car is driving forward at 15 mIs. How long would it take this car to pass through anintersection that is 11 m long?
To convert from km/h to rn/s
• Changekmtom:lkm= m
• Changehtos:lh=
______
s
• Therefore multiply by
___________
and divide by
____________
OR
• Divide the speed in
___________
by 3.6 to obtain the speed in
__________
For example, convert 75 km/h to mis.
Try the following unit conversion problems yourself.1. Convert 95 km/h tom/s.
2. A truck’s displacement is 45 km north after driving for 1.3 hours. What was the truck’saverage velocity in km/h and mis?
3. What is the displacement of an airplane flying 480 km/h [E] during a 5.0 mm timeinterval?
Use with textbook pages 362-366.
C©ictt @vr©® v®fflp1. What is the formula for each of the following quantities?
a) average velocity b) displacement c) time
_________
2. Complete the following table, Use the motion fonnula to calculate the missing quantities.Show all your work and use the correct units.
ofsplacena lime Saeaja V*dly Fc?mala lJnd andC*idaflfem Shmm
15,Bm 3s 5.2mist 3
35751cm 65h22.6 m 565 rn/s
a25h 75km/h11Gm 315s24km 32km/h
8s 6Orn/s
a. Complete the following table. Show all your work and use the correct units.
Qisesttan eed nweerand ceridailfonSbsvn
a) A woman wants to paddle 420 m across a lake in her kayak. If she paddlesacross the lake at an average velocIty of 2.8 m/s, how long does ft take her tocrass?
b) If a cyclist rides west at 14 rn/s1 how long would ft take her to travel 980 m?
c)Acheetahrunsatavelocityof3Omis[9. lfitrunsfor8.Ss1whatisltsdisplacement?
The Australian dragonf y can fly at 18 mIs, How long does It take to fly224 m?
e) The Skyride gondola at Grouse Mountain in North Vancouver lakes 8 mm to goup the 3 km mountain. What is the average velochy of the gondola?
f) Due to plate tectonics the North American and European continenta are drifhngapart at an average speed of about Scm per year At this speed1 how long (Inyears) will it take tar them to drift apart by another 2400 m?
g) A dragster heading north, reaches a velocity of 628 km/h from rest in 3.72 s.How far dki ft travel in that time?
o5
Name Date
11
)
)
) Use with tertbak pages 364-367.
3Iop o p©thrm4@ jnfl1. What does the slope of a line on a po Won-time graph represent?
2. What does a straight line on a position-time graph represent?
3.Defineslope.
4. What is the formula used to calculate the slope of a straight fine?
5. UsIng the position4ime graph, determine the slope of each line segment bycompleting the following table.
6
g.
4’a
2
ib 15Time N
20
Line Rise Ru Slspe Calcuktin
A
B
C
0
LineCf 7’17UneA
—4
71\ -. /.%$ / line S
/ \I
IS
Slop
e=
m=
how
stee
p
How
toca
lcul
ate
slop
e:1.
pick
two
poin
tson
grid
2.m
ake
atr
iangle
/
3.m
=he
ight
oftr
iang
lew
idth
oftr
iang
le.
.30
JPo
sitio
n
m4
00
=33
.3(m
)
12
4.U
nits
=m
etre
s/se
cond
sosl
ope
=33
.3m
/s
Nam
e:__
____
____
____
____
____
____
____
____
Blo
ck:_
____
___
Dat
e:__
____
____
____
_
Scie
nce
10F
ind
in2
the
Slo
pe
Work
sheet
(10
mar
ks)
4O
0
‘Ar)
106 A
7)
•:
26
Had
the
slop
eof
ends
lIne.
I)
:
1012
1416
1820
Tim
e(a
)
:
F. .
..
Ltt
81
9)10
)
Use
i4th
test
took
page
s36
4—36
7
An
o1
yzk
post
Ion#im
rophs
1.U
seth
efo
llow
ing
posi
tion
vers
usti
me
grap
hsh
owin
ga
girl
’sm
ovem
ent
upan
ddo
wn
the
aisl
eof
ast
ore
toan
swer
the
ques
tion
sbe
low
.T
heor
igin
isat
one
end
ofth
eai
sle. Ti
me
kile
rval
Dls
Iace
men
tA
vers
geV
e3dt
y
0s—
2S
2s-4
3s
5s—
7s
7s—
i2s
12s—
14s
14s—
iSS
16s—
lBs
18s—
19s
195-
20s
ii)W
hen
does
theg
lrlh
avea
posi
tionof—
6m
?
s)W
hat
isth
egi
rl’s
tota
ldi
spla
cem
ent
afte
r20
seco
nds?
________________
Na
-.
2.U
seth
efo
llow
ing
posi
tion-
time
grap
h,sh
owin
gth
em
otio
nof
agy
mna
ston
aba
lanc
ebe
am,
toM
atch
each
Des
crip
tor
belo
ww
ithth
eco
rres
pond
ing
part
ofth
eG
raph
show
nab
ove.
Eac
hpa
rtof
the
Gra
phm
aybe
used
asof
ten
asne
cess
ary.
Ass
ume
the
cent
reof
the
bala
nce
bean
,is
the
refe
renc
epo
int
(orig
in).
She
stan
dsst
illfo
r3s.
—b)
She
mov
esev
enfa
ster
toth
eri
ght
for
Is.
*c)
She
mov
esve
rysl
owly
toth
ele
ftfo
r2s.
—d)
She
mov
esm
ore
quic
idy
toth
öle
ftfo
r 4s.
a)S
heen
dsup
1m
left
ofth
ece
ntre
ofth
eba
lanc
ebe
am,
—f)
She
star
ts2
mto
the
righ
tof
the
cent
reof
the
bala
nce
beam
.
3U
seth
efo
llow
ing
posi
tior
i4lm
egr
aph,
show
ing
the
mot
ion
oftw
oru
nner
s,to
answ
erth
equ
esti
ons
belo
w.
Nam
eD
ate
a)C
ompl
ete
the
follo
win
gta
ble.
Det
erm
ine
how
far
the
girl
trav
elle
ddu
ring
each
tim
ein
terv
alan
dca
lcul
ate
the
aver
age
velo
city
for
each
sect
ion
ofth
egr
aph.
a)W
hat
does
the
y-in
terc
ept
repr
esen
t?
Ii)D
oth
eru
nner
sst
art
atth
esa
me
plac
e?
c)A
tabo
ut2s.
whi
chru
nner
isru
nnin
gfa
ster
?H
owca
nyo
ute
ll?
d)W
hat
occ
urs
at5s?
______________________-
a)A
tlO
s,w
hich
runn
eris
ahea
d?
________________
b)W
hen
was
the
car
50m
(E]
ofth
ere
fere
nce
poin
t?
c)W
hat w
asth
eca
r’s
posi
tion
at1
a?
__________________
Wher
ewas
thec
arat
5.5
s?—
______________
a)W
hat
was
the
car’
sav
erag
eve
loci
tybe
twee
n0
aar
id7
s?
______
________
t)D
escr
ibe
the
mot
ion
otth
eca
rdw
ing
the
time
inte
rval
2s-45.
Nam
etw
teiA
sl
Use
aiffi
testh
ook
page
s366467
Cen
tru
cthj
and
nte
rprt
nposon4m
©ro
phs
1.U
seth
efo
llow
ing
data
tabl
e,sh
owin
ga
car’
sre
cord
edpo
siti
ons
over
7se
cond
s,to
answ
erth
equ
esti
ons
belo
w.
Ass
ume
0rn
isth
ere
fere
nce
poin
t.
Thee
(a)
Posit
ion
(m)
012
51
100
275
350
425
50
6—
25
7-5
0
a)L
abel
the
x-ax
isw
ithT
ime(
s)an
dth
ey-
axis
with
Posi
tion
(m).
Use
the
grid
topl
otth
eda
tapo
ints
from
the
data
tabl
e.O
rav
abe
st-f
itlin
eth
roug
hth
epo
ints
.
125
100 .75 50 25 -
-——
——
.4—
—.-
x0
.12
14
$,.
—25
-50
Nao
Dee
2Sk
etch
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Name Date :1
Use with textbook pages 340-351.
Th o1atch the Temi on the left wti the best
Desciriptr oi the dihL tech Descdpor mey beused only once.
A. also known as theorigin
U. the size of ameasurement
C.. “change In” or “differonce”
0. a specific poInt orlocation relative to areference point
E. the total length of apath between twopoints
F. the difference betweenthe initial thne and thefinal time
G. the straight line distance and directionfrom :OflO point toanother
Cfrde the ktter of the best answer..
8.. Which of the following units is associatedwith tat?
C.. km
Ii. rn/s
Use ithe iToUowng motion diagramrepiresemiting a baill moving across ahorizontal taMe to answer question 10.
t=O5 tzi t2s t=3s t4s t=5s
• •, • . •I .1
0cm 20cm 40cm 60cm 80cm 100cm
10. Which of i e following statements aredescriptions of the motion of the ball?
1. The ball is In uniform motion,
II. The ball is moving from left to right,
IlL The displacement between 4 and 2 Sthe same as the displacement between
11. Which of the graphs above show unifonnmotion?
AIandUon1y
IL I and HI only
I._..__distaflce2. position3. magnitude4. displacement6. time Inteival6.. location7.
_____
Greek letterdelta, .
Ii
S
S
S
S
-0
*S
*
*
S
a*
a
A.I and H only
B. I and Ill only
C. fland.m only
0.11 U, and IU
Use the felillowing postion-time graphsto answer questioi 11.
‘Lzzzz’LzrrTime Time
a
9. Which of the following describes a scalarquantity?
A. it has direction only
B. it has magnitude only
C. it is the size of a quantity
0. ft has both direction and magnitude
Time
C. TI and Ill only
0.1, U, and ifi
Use with textbook pages 362-370. II
Ao vocyUse the following position-tiniie graph toanswer questIons 1 to 4.
Position vs. Time
5. Which two terms represent a vectorquantity and the scalar quantity of thevecto?s magnitude, respectively?
A. velocity and speed
L time and time interval
C, acceleration and velocity
. position and displacement
6. Which of the following graphs representthe motion of an object with a constantvelocity?
Llandllonly
B. 1 and ifi only
C.ttandUJOflly
0. 1 U, and III
7. How long would a meteor, with a velocityof 45 km/s, take to travel 120 km throughEarth’s atmosphere to Earth’s surface?Assume no atmospheric friction.
A. 0.375 a
B. 2.66 a
C. 45 a
0.54005
8. It took 0.45 a for a fasthafl to reach thebatter. If the pitcher is 18 in away from thebatter, how fast was the fastball pitch?
A. 0.025 rn/s
B.8.irn/s
C. iBm/s
0.40 rn/s
2 4 6 8 10 12 14 16Time {s)
Match each 0escrtcr beaw wIth ikeorresondIn part ot the Graph shown ahove.
1.__ tasanaveragebcJtyotOrn/s2.. hasanaverageveIoctyofim/s[NJ3.
_____
has an average velocity of 2 rn/s [NI4.
_____
has an average ve’ocity of 7 rn/s (SJ
Time
Time
(I
Name DateAt
9. The average velocity of a plane was 600km/h [NJ. How long did it take the planeto travel 120km?
A. 0.2 mm
B. 5 miii
C. 12mm
D.5Ob
1. A Canada goose flew 860 km fromWashington to British Columbia withan average velocity of 30.5 rn/s [NJ.Approximately how long did it take thegoose to make its journey?
A. 0.04 h
8. 7.8 Ii
C. 2&2h
D. 469.9 h
ii. An odometer in a car has a reading of50 km at the beginning of a trip and areading of 125 km half an hour later. Whatis the average speed of the car?
A. 3.75 km/h
B. 62.5 km/h
C. 150km/h
D. 250 km/h
4
4
4
9
a
4
la During which time interval is the objectmoving towards the origin?
intervalA
B.intervalB
C, interval C
D. interval t)
13. What is the average velocily between 0.6 hand I h?
A. +0.4 km/h
B. +1.25 km/h
C. +1.66 km/h
0. +2.5 km/h
114. What is the object’s displacement between0.4 h and 0.6 h?
A. -0.75 km
8. +0.25 km
C. +0,75 km
0. +1.0 km
I
Use the followimig positiontfime grhof the rnotIrn of an object to answerestons 12 to 14.
+125
÷ 1.00
+0.75
+050
40.25 P1a
4
4
4
a0
9
S
4
a
4-
4
*
a
4S
a
0.•0 o;:o o.o o.oTime h)
1.00
Name: Block:_______ Date:
Science 10 8-1E Toy Car Time Trials
Purpose: To determine whether a toy car’s motion is uniform
Materials: See p.356 in text
Procedure: See pages 356 — 3571. Repeat procedure using a dynamics cart and propel it with your finger at a faster speed.2. Graph the motion of the toy car and dynamics cart in a different colour.
Time Displacement TotalInterval during time Displacement
(s) interval (cm (cm[forwardi) LforwardD
0.0-0.1
0.1-0.20.2-0.30.3-0.40.4-0.50.5-0.60.6-0.70.7-0.80.8-0.90.9-1.01.0-1.11.1-1.21.2-1.31.3-1.41.4-1.51.5-1.61.6-1.71.7-1.81.8-1.91.9-2.0
Analyze1. Compare the displacements for each of your time intervals.
a) Were all of the displacements exactly the same?b) If not, what does this indicate?
______________________
c) What could have caused these variations?
__________________________________________
Graph the motion of both the car and the cart on the following page. Use pencil!
Observations:
Table 1. Motion of the Toy CarTable 2. Motion of the Dynamics Cart
Time Displacement TotalInterval during time Displacement
(s) interval (cm (cm[forward]) [forward])
0.0-0.1
0.1-0.20.2-0.30.3-0.40.4-0.50.5-0.60.6-0.70.7-0.80.8-0.90.9-1.01.0-1.11.1-1.21.2-1.31.3-1.41.4-1.51.5-1.61.6-1.71.7-1.81.8-1.91.9-2.0
1. State the relationship between equal time intervals and the actual displacements for thecar’s motion.
_____________________________________________________________
2. If you repeated this experiment with a faster car, how would the ticker tape from thatexperiment compare to this ticker tape?
_____________________________________________
3. Compare the two graphs you made in terms of slope. What does a steeper graphrepresent? (calculate the slope of each first).
Condilusion:
How closely does a toy car’s motion approximate uniform motion?
Conchnde and Apply: