Uploaded by James Liu

Physics Unit 1 Review (1)

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1.
2
a
b
.
7. T
8. F
9. T
10 F
.
.
.
C
6. b
.
.
distance
is total
slowing down
.
5
a
is
Negative
the
same
travelled divided by
11 T
.
.
No
b)
Yes
they 're always
,
16 Yes
in
.
.
.
,
3.5
P
38
G : at
.
R
object does not
The
:
=
2.0s
,
for
move
I = 98m15 -417
,
1
Vi
second
=
Omls
od
:
E-
:
od =
5
:
od =
'
vi. ot-Yza.at
4214.87125
od =(4. 9) (4)
od = 19.6m
.
.
straight
a
18 they have
17 Yes
range and speed both decreases
.
39
12
amount
F.
.
.
.
,
the total
14 F
15 a)
19
4.
a
Aug speed
,
.
B. T
3.
Gi Vi
R
:
E :
s
:
S
.
9m/s
,
4-
=
Omls
,
Ot
-3s
-
ñ= ?
a=Vf¥i_
0-9/3
a=
a
'
=
=-3
The acceleration is
3m15 [backward]
.
to
line
.
decrease their speed
.
of time
.
Omls [forward]
9.com/s,ot--2sR:ir--?E:a--v#fs:a=9-
40 a) G
.
Vi
:
=
,
Vf=
%
45m15
a-
-
b) 2×9=18 m
100-18=8 2m
t -1=4+1-2
=
2s -1
(82%9.0)
2+9
=
.
I
II. Is
=
41 a) G : od = 50m
.
R:
-
Vf=Om1s
Vf2=V? -12A od
-
0=202+29-50
'
.
-
look
400
a =
-
4m15
S : Acceleration
b)
,
a
E :
s
Vi -20mA
,
4m15 [backward]
is
Vf=Vi tarot
0=20+1-4 )t
-20=-45
5=-1
42
Gi
.
Vi
R:
a
E
od
:
=
-
5m Is ,
Vt Omls
vi. ot
+
-
-
,
D= / om ,
Ot -2.2s
-
Yzaioti
10=(5712-2)-1 Katz 25
'
s :
.
=
10
11-1
Yza 14.84)
2.42-a I
a-
-
43
.
041m15
G : ñ= 9. 8m15 [down)
vi-10.com/s-LdovnD.ot--Or5sR:odE:od=Vi.ot+Yza.ot
,
'
s
:
o
'd -110 ) (0.5 )
=
☐
Yzlf 8) (0-55
5-1-(4,9×0.25)
D= 5- 1.225
=
+
.
44
increase
a)
.
b) height
=
'¥g
=Em
-5/4=6.25 M
=
46
Gia
.
2m15
-_
,
Vz =/omls
,
,
hi
=
Omls
R :D
d. =EaÉ
dilot
'
It
f-
=
lot
C- =/ 0s
od=v¥
od =/0×10
cod -400m
VI=v? -12A od
b)
-
VI. =
VI.
=
2.
(2) ( 100 )
400
Vf= 20m15
47
G : Vi=
.
100km/h __ 27.78ms
,
Vf=omls
,
ot-5.us
R :od= ?
E
D= / ¥
:
ot
od :( 13.89 )( 5. 2)
od -72.2M
-
9.sn/5-LdownI.Vi- 3omls.Vf- 0mlsR:otE:Vf- Vi+a.ot
48 .a)G :
as
0=30 -9.8T
-30=-9.8 t
-
3.0kt
od=I
b)
od
=
vt-lomlsvi-3omls.a-9.fm/sYdoun)
c)
3%9.8 )
-
od -46m
Vf
10=30+1-9.81-1
-
w=
-9.8T
,
a-
-
9- 8m15 Edowr)
od-vi-ottka.tt
0=301--4.91-2
-
3ot= -4.9T
-3054.9T
6. It
'
-
-
Vit at
-10--30 -9.8T
-40=-9.84
2.04s -=t
od=0m
Vf=lom1s[down]
Vi -30ms
-
,
,
a=9r8m/5[down]
Vf vital
-
-
e)
d)
4.08=5
Vitaris EPI
,
49 a)
-7 -4s
a
.
'
.
]
,
co :
a=O
b)
a
,
I
'
É
.
-
5-4%-9
,
t :c }
a="%¢xz
:
: -10
a
:
-5
1.25m/s[NI
A
h
_
0-2%6-0
a=
=
50
a-
-
-
-
-
-
I.
h=Vit+%a É
h-vz.ttyza.li
h=zv; -19.6
h' 10th -490
-
!
zv -19.6=101-490
Yost
Is
-
-
8V=
-470.4
✓ = 58.8ms
h=2V
19.6
-
4--2158.8 ) -19.6
h -98m
-
55
.
Io.49m
od-nvg.t-Yza.GE
0.49=4.91-2
¥f=E
↳
10m15
a=
Y=t
Vg=0m/s
9.sn/s2-LdounI
0.3kt
dg= 0.49m
d=V☐t
d -110310-32 )
4=3 .2M
25km
60°
57
.
F
0-1
.
Ed , -_ 20km
D- =/ So -60=1200
E- a'+ 5- 2abcos0
did
5=202+252-2120×25 ) (05/120)
(
=D
,
-1dm
✗ +
dzxtdiytdzy
d=O -1255in / 60)
=/ 202+252-1000005420)
=/400+625-(100031-0.5)
=
=Do25t5Ñ
21.65km
dy=( 20 ) -1405 )( cos 60 )
=JFÉ
c-39.05
,
-32.5km
'
E- a'+5
c.
=/21.652 -132.5h
-1468.72+1056.25-0
c-39.05
Tan -0=2%65/32.5
①
=
Tan"(
"
6%2.51=33.670
-
58.04=01,1-42
=
dixtdzxtdiytdzy
dxtotdixtdzx
=D -118340523 )
-7.36m
dytot=6
-
(8) ( Siris )
-87
=3
tanf -187/2.36
e=a4,5
c=hisÉs
=
7.9M
-
'
i.
tan
I
21.30
(2.87/7.36)
[ E- 21.30N ]
i. 7.9M
59
D-
"
,
"
or
725°
y
15m15 -4=1
VT=YtVz
=
Vixtvzxtlhytvzy
Hot -115) (2) ( ( 0525)
-
=
4,12%5=0.82445
4. 12m15
Vy -14=0-1112)(sin25 )
25.07ms
i=a2+b
'
Tano
-10.85+1.012
c
C' 1. 3m15
-
i. 1. 3m15
63
.
5.07%5=1.0 / 4m15
D-
-
-
160¥24
=tant(
=
Ew 50.90N]
50.9
""
4/0.824 )
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