Download 3 Questions with Answers on General Physics I - Examination 2 | PHYS 130 and more Exams Physics in PDF only on Docsity!
r
Nam€: Exam 2 - Makeup
l0/t]/
Prol Finn.
Ptrvs
- Sallytossesacoin
in th€ air while shejsridingona bainthatis travelingl00kmih. when th€ coinreachesthe top of its flight, a personon the groundwould det€rminethat tle coin has A) a v€locityofzero. B) a velocity $eater tbar ze.o. C) no acceleratioD. D) a horizontaLacceletationonly. l,ong Answer: Write out r solutionfor erch problen. Be su.e to showall yourwork L A novicegolferon thegr€entak€sthreestrokesto sinktheball. Thesuccessived;splarementsare4.00m to the north,2.00m northeast, gnd I .00m at 30.0' westof south.Stating a!rhesameinitialpoint,anexpert golfer couldmaketheholeh whatsingledisplace'nent? (4 pts) lx- a clsqs -
sra3o'
f ,. : 4
-l
icos3oo -. u't{ o.qr t ''\
'ta^ -+ 8.c" Vector A hasa negativex compon€nt3.00unilsin lengthanda positivey component2.00unitsin length. What vectof B when add€i !o A giv€s a resultantwith no r component and a n€gative y component 4.00 units jn lengdr? Givethemagnitudeanddirectionof vectorB. (4 ptr) v
I
I 1 A- t)-
-tL
^3t -3+ Bx =o
\s.--
'J 21 1l) ' -\
- Joeis an€ag€r7-y€er-oldwho likesto play basketball.
He still
hastroublemakingbasketsbecauseh€ is only
L4 m tall ard the
basketis 3.0 m abovethe
ground. He decides to usea ladderto help hin get the ball in the
basketballnet. Joestandson a ladderthat is 1.0 meterhigh. He shootsthe ball ar a 60 degreeangle
abovethe
PTIYS
130 Exan 2 - Mak€up
ttorizontal\rith an initial velocity of8.0 n/s. The ball is releasedfrom headheight.
a. How long will the basketball be in the air? (4 pt!)
.-__ *_
e
l)
L \
r.lo
?+
$' '
v)i .t
'i(t'
o ,,"'
r0/rr/
Prof. Finn
, \L
i Z.qh
<-r-L.
o -
(G",-r\J ,,
6
4
)t
v)'
u)
,,"",^" I-;
o -, z\fr-SlA";y"
i
+r.is t'
"^"
/,
\v,"\s
_ulj
l\
t
-""']i;"--r'-')(-irl).a,1-
b. Hou fastis rheballmovinS
jusl beforeir hirslhe gro{€d?{4 pti)
/ ,
Vne=V"r.-(i.-ri)(c,,bo'
,
ld."
-:,:t'-f
-l
it
--
'
r t
'
q.15 .,
qt.'
c. After hittingtheground,theball bouncesbackup r ith 90'/. of hsoriginalveloc ity. lftheballisin
contact with thegroundfor 0.10second,what is th€ball'saccelerationduringthebaunc€?(4 pts)
"
ty
VG -Vi
o1('0.-
'l
(-
'o
t*
)
AE
AI
O.I\J
\
,-i
La,
zor hi.)- i
d. Whatis themaximurnheighlr€achedby thebasketbau?(4 pts)
Vxe' - V1i' -
o\
,
^)
'
'
,(ls
throughthe basket?(4 pts)
-l
h" r^,
r. d-s--
Joe s ladderis 5.0 m from dle basket,and the basketis 1.0 m abole
^)=
x- x"/* Vl
|
?
1,"E
,-L_
.J
the ball go
\ r.o
)r=
,.:'
,"1*r,,''
|
\ 'tu
r/
-.
r
4,1'"1)'
,)i
i
Vii
t
4-,,)
.("o'
i
/ r.
zt,
L
-a
(1.:-tI
{x. '
't"t
' 9^n
"'
+-' Ltf
