Physics105
A
Name
101312008
Exam I
and will comply with the provisions
As a studentat NJIT I will conduct myself in a professionalmanner
subscribeto the following pledge:on
of the NJIT AcademicHonor Code,I alsounderstandthat r must
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code.
have not viotateo tne p.ovisions ofthe NJIT Academic llonor
that bestanswersthe question'
Mnltiple Choice: (15 questions,Ipt. each) Identify the letter of the choice
arc 3 -28ftet per meter,then what is the
I . A cerealbox hasthe dimensionsof 0.19 m x 0.28m x 0.070m. If there
.:qolumeof the box in cubic feet?
( d 0.13cubicfeet
>6. 0.040cubicfeet
c. 0.012cubicfeet
d. 0.0037 cubicfeet
e. 0.11cubicfeet
i n:7--r {t
)Jfe'!o'"T ^} ''t {c )
(r.rl x 7.,il {tx ( o'ti v-?-'Y
/=
: o.t?x".tFxo.ot x(r..8)' -t'\t
= o.l3 {.}
(5, 3) andpoint B is locatedat
2. A coordinat€system(x,y) hasunits of meters. Point.d it to""t"O at coordinates
coordinates(-3, 9). Wbat is the distancefrom A to B?
a. 14m
9l'r
a
.L
J=J \Xr-xr) r {7rl, /
"/,1,.L
d. l7m
e. 15m
l;f+(l^t)'
a distanceof 90 m. If eastis
3. A truck moves70 m east,then moves 120m west,andfinally moveseastagain
d"'ffff
{. -4om
displacement?
tr$Aluck
e*"I#;M
thepositive
#----.>
c. 280m
d. -280m
e. 230m
+
lDrn
"t?
-t>o+7o .- +D-tbt*ottt
animalsare running at firll
4. A cheetahcan nm at approximately100krn/hr anda gazelleat 80.0knlhr. lf both
prey?
its
,l
catches
the cheetah
,ppe{ with the ga"ene?O.Om ahea4 how long bdore
( a.Jtz.os
Y.25.2s
c. 6.30s
d. 10.7s
e. 20.3s
'wfrr
X= X'tu-t ;
f i ; " c t ^ r s 1 < ^X . = O + @ ' L f ' F '
XJ = 't- t 2r. 2 oy tF* 3,lc?r.t\e
e
s=.-q=l'
o
t"
in
h
t o o K u , n / 4 = - l o o c x ( o=.zcy l ^ f s
3oc*- L
:' p
Ptr = > t . L \
s cL
Vc t Ftu/t- -- frcx f1sc
l:':t-:
Iv\- w--=
q:?,
;
i'.li
l.'.,
.^:-:
to 100lsn/hrin 8'00
rest
from
rafe
sportscardealercrairitittii ni" ,xrr*itt u"htrrat" at a constant
5. A European
C"*.t" ./
x.=Ytv
.''1>.?-t -t'Lau)Y:
(ooV, /t^v= qfiff
AIf so,what is the acceleration?
I a],- 3.47mls'
Y. 6.szmt*
c. 11.4m/s2
d. 17.4mlsz
e. 19.5m/s2
l--
?
,/\f
11
7r
U =
r- ? . I\
|
I
u o ' t &\-
D
r vtr
,,
= z1-f'"{r
= 7.{tr^(S*
.*-(L-7zlE
^-l-1
i
I
Physics105
Exam I
tot3/2008
A
,ory'
a. ll.0m
b. 9.80m
c . 2 2 . Im
(O
""ro
(t4,tA{
J+^.tt= D . )i^-.€i^le=o
1 3 . A baseballthrown from the outfield is releasedfiom shoulder
initial angleof 30.0owith respectto the horizontal.What is
;qaches during its trajectory?
'#
=-"
'9: Jfc^n'/r^tal
initial velocity of 29.4m/s at an
that the ball
''VoV
;13il n;"=-(.*
22.Im
@
r;sa{6
.: >f.(xJ'i4?o:lr(,7
c.
d. 44.1m
e. 48.3m
k wa.z
We
14.Abanisrolled
horizontauyoffatable
withaninitiar
w
_rJ (
)
/_7" lfr
W^_\j_,=
{ ,:&
;rlik"=oJ#t##R
{o
fi ft
or
trajectorytime from table to the floor to be 0.30 s. What is the height ofthe table?(g : 9.8 m/s2and air
resistanCe
is negligible)
--o---' |
,U-.,
= o , ,/ o.. ,
a. 0.ll m
^'
*-;-..I
L
b. 0.22m
/
1
lo 8iiil
0.55m
z
-\ '\
--{
-+]'
=
'r 'E'q+c-]
f-'"-"2*
/7 'r
,['
\
.
/=
*+.f,|xd.,]'=^-o- ++lM
15. A fireman, 50.0 m awayfrom a btrmingbuilding; directsa sheamof water from a fire hoseat an angleof 30.0o
abovethe horizontal.If the initial speedofthe streamis 40.0 rnls, at uihatheightwill the strearnof iater strike
f'?tt#'
b. 13.4
m
Q rs.z,
,,i.--4? -
i'-6i,
Y i;;;li-af'
{'!x=At'\6t0"=+'co53o''''9(^6
,
- -/1.
' ,/
,
'4, = tI" siog = (D Sh3c"'= Lo
t
^_=-+I--..r+
o t=#,r:,,,fts
L
- i ' f'P^+t
) = r, (v;rt-iil" { i; r''/in
9e
-o
71&