Đang tải... (xem toàn văn)
[r]
(1)"ret {6 Trddng THPT Cdn Giu$c
rd vflt li
Kidm tra I tidt
MOn: vflt li - L{P l0 (Nfing cao)
Tht i gian: 45 phrit e$
Mfl d6: fi)l :
.1 MQt lf,c tlon g6m I qui cdu gdn vio ddu mOt soi diy c6 chi6u dii 80cm kh6ng gi6n, khdi
hfQng kh6ng d6ng t?, a6,
"on tei c]{a sQi df,y drfgc gifr cd dintr.-t<6o
dfly l€ch kh6i phrrdng thfing I r
gO" ig,rAi tUa ,t e L{y e= lQ m/s2 Vfn tdt q{c el4i cfia_qufl ciu c6:gi6 rri
fu t,+o -1, 1' ,.'l,e+ ry!, t c l'89 m/s /t D, 1,98 mts t'
fn _qggog tdc don gdm I qui cdu c6 khdi hrong m sdn vlo.di"39, soi dfiv khdng gidn c6 khdi tr/Qng kh6re oans r?,-Ia" ri" rii.,a ro i aav o?qrlir.o,ainr,
5Qo day lgcfr k!6i nlrrong thfng I
;ffiHtfia-"ii r-qrc clng ddy diy rreo hgp vdi phuong thEn'g tttlns mQt 969 a (< c(r) c6 bidu
u{y g= 10 m/s2 ;l
5 M6t vi6n d4n dang bay v6i vfn tdc 20om/s thi nd thtnh hai minh.Ivlfinh
thrf nhdt
ctrid110!ro-t trdi t rg"g cria vi€n-ttgn vi biy theo hrrdng ban tldu cfra vi6n den vdi vfln tdc SOOrnfs H6i mflnh
thf hai bay theo hudng nio vdi vfin tdc bao nhi0u? , :
-A Theo hddng ban dd-u vdi vfn t6c 250m/s B Theo,hudng ban ttiu vdi v0n tdc 300m/s
c.Theo hudng ngr1gc lli vdi vflntdc 300m/s ffitheo hudng ngu{c l4i vdi vfn tdc 250m/s M6t lb xo c6 dQ cttng k = 20N/mrt<hdi luqng fnOni aene kd Treo vio n6 mQt qufr cdu c6 khdi
Iiiqo! m = 10Qg finh thd nang din hdi'crla lb xo t4i vi tri cdch vi qt cAn bhng mOt doen 5cm? Chgn
gdc it d ntrng tii ,i trt lb xo chua gren, ldy g = l0m/s2 ;
ffio,tr B o,o25I c o,o5J D' o'075J
AIL: W , q# = uff (n) \A'r lK a'{', I zqql:
(2)'@ Ic
&
-o
a ,i' D ': O
thCp dang drlng y6n hdn bi thuf tinh sau
D.0,6m/s
B{n mQt hbn bi thuf tinh c6 khdi lugng m vdi vfln t6c 5m/s vio mQt hbn bi
ttrdi tugng 3m Bidt va chqm li tnf c di$n din tr6l finn d0 ldn vQn tdc cria ch?m?
2,5mls B.0m/s
DQng nlng cria vAt gifrm v6n tdc f,rn ,"
ngo?i luc gi6m ,/ q
.A
S,\
C 10m/s
B, gia tdc giirn -/
ffi ngbai lgc sinh cdng flm
9 Ddn vi nio sau ddy kh6ng phdi l{ ddn vi cria c6ng sudt? D
A-A I{P (mr l{c) ./ $}l J.s' ,/ C.w.-' {a ? D N.m/s ,/
10 MOt vft d dQ cao h so vdi m{t tlilt, c6 khdi lugng m, vfln tdc v Co n6ng bfia v4t c6 bi€u thr?c
A.w=L7n,/ Bkw=*<l+sh),r' C.W=!*u,.- D.W=mghra
2
I l Xdt mQr vgr rdi tg Khfro srit h€ vf t vi udi tlft" ta c6 thd kdt lu4n:
e Ndu thdnf,ng giim thi dQng ning c0ng girflm -/ B cdntrng kh6ng bio wan /
C tldrr dlQng ntrng gif,m thi thdnnng teng,/ ffi pO giim thdning blng {tQ rxng d1ngnlngy 12.Cd niing lir mQt tlSi lu{ng
A lu6n dtlng { B lu6n khr{c 0
i;5r#i11,:ff;'ffi1"^{, *^y ddi tnrdns,ff,Tr::lJ}?iu"g
0' ho{c im z/
n 6 to chuydn dOng thEng d6u B ve tinh chuydn dgng tr6n ddu ffi VatchuydnttQng chi dudi t6c dgng cria trgng lgc D vft drfng y0n
14 MOr ngudi k!,o mOt thtng
l-od" c6 khdi lygng 15kg chuydn dQng ddu I6n cao 8m -rrong 20s.'ilnh c6ng vi c6ng su6't cria ngrldi d6?
n, toool" roowr, - B 800J,400w-./' c 1000l,5o0w .- mH 1?roJregw -I5 Khi v$n tdc cria vft tlng gdp tl6i tht dQng ning cria vflt
A.ttrng e{pddi,/ f B.kh6ng,adi. ffiteng 4Ld.n ' D.kh6ngx6cdinh awcrr'
l6)Phdt bidu nio sau dfly li sai n6i vd dinh luflt b6o toin tl0ng lrrEirg? ''
A Trong hl kin,tdng dOng h{ng cria hQ lt rnQt vectd kh6ng ttdi ci vd hudng vi dg l6nr/ S Vectd tdng tlQng lugng cfra h€ kin dr/pc bilo todn ,r
$ Oi,ntr luft bflo toan 90lq lu.One lir cd sd clia nguy€n tdc bhuydn dQng bing phin n/c cria tilntrta
Si rdng dQng lugng cfra h€ kin c6 tIQ ldn khdng adi z
pZ Ueu m$t vflt chuydn dQng irqng rn dng c6 ma sr{t thi
h."o n[ng ctia vflt b6o toin
B ttQng nlng vi thdntrng kh6ng biio toirn nhtfng cd ning bio toin
S+90 bidn thi6n cc, nlng UBng c6ng cfra hfc ma s6t P irQ bidn thi€n cd nEng bing c6ng cria trgng l{c
,iS Ctrqn cf,u sai I
Xet cnuydndQng cria mQt vAt rugt tr6n mQt m{t ph8ng nghiOng
A Trgng lyc sinh c6ng dUdng
p:.t Uc ma s6t sinh c6ng 6m : \
'C Phin luc kh6ng sinh c6ng
ffi fnan t{c sinh c6ng ddong vi vgt chuydn tl$ng nhanh ddn ddu
19 He ba lrr c cAn blng c6 dic didm
ffi*c6 gi6 ddng ph6ng vi d6ng quy, c6 hqrp lgc cria hai hyc bdt ki cin blng vdi I{c thrl ba
(3)r'H
t,
1t4
C c6 gi6 ddng quy D, c6 hgp.lf" bXng
20 Phdt bidu nio sau dAy li sai? * ' ,
A Hgp l{c hai l{c song song ctng chi6u li m$t lgc song song c}ng chi6u vdi hai luc rhanh Ohdn ./ -ffiHo.p h/c hai l{c song song cDng,chi6u h mOt lyc song rong rt,rgc chidu vdi hai lgc thintr phdn 4
C Hgp lyc hai l{c song song ctng chidu c6 ilg ldn bing tdng rtQ ldn cfia hai lgc thinh phdn /
D Hqp I{c hai'l1rc song song ctng chidu c6 gi6 chia didm tl{t cfra hai lgc theo hS thrlc -/ F t- d^a
F, d,
21 Trudng hgp nio sau ddy h1c c6 t6c dgng'lim quay vft rdn quanh mQt trgc? i
A Lq/c c6 gi6 nlm trong m{r phEng vuong g6c vdi truc quay vi c{t tryc quay 1
,ffi" LUc cg:;gld *Eqgr,ong q4.I phfrn
ry :{f" {,,tr{",+4ln"$rong q4! phf,ng vu0ng g6c vdi truc,quay vi kh6ng cdt trpc quay _/,
C
LUq.c6i,er4d$t.tfuc.qqay, $t ngudi dap phanh dd xe:kh6ng rrurgr xud'mg ddc
24 M$t qui cilu cdng chdt dugc dar tren mQt m{t c6 d4ng nhu hinh vE
Cf,nSXng cria qui ci6 ta bdn d vi tri A ([) ./ E" ([t) ./ ,ffi GII]
./
Ls.Chgn,cflu saf,
D (n) vh (n[0 ,/
S0]v4t,nrmy€n tr6n m$t m6t ph,furg nghi&rg nhu hinh vE
ffi Vqt ctu b$ng dudi t6c dqng cria hai luc liirqng luc vi ph6n l$c
B VAt c6n bing duci tric dpng cta ba lWc li trgng lgc, phan luc vi lyc ma s6t nghi
C vft cen bing vi cic luc r6c dung lon vAt co hgrp lwc b6ng
D CAc lpc tic dyrs l€qvil c6 gi6 rl0ng quy
26 Thanh en aiing chdt, c6 trgng tuq.g-rboN, chiEu dii 2m cin bine nhu hinh vE LUc F c6 d0 ldrn H
,,ffi$50N
c l00N
8.75N
D Mot gi6 tri kh6c 4
{)
z7-"!a!ngu&i glle qgt chiilc g-0y A! nrielrg mQt c6 miy nfug 1000N Di6{" treo c6 m6y c6ch d6u vai gpghai ng"d,ij Hdi mQi ngudi chlu t6c dgng mQt lyc bao *,i€uf
A- l0ooN / ' ffi sooN
./ c.2oooN / D chua dri dii kiQn dA x6c dirfr_
,.-oo,l
(4)t
1t,
i
- - - f - t
28 M$t v$t c6'kh6i lusng 2kg dusc gity6n tr€n mQt m$t phing nghidng bdi.m$t sgi dffy song song vdi du&ng diSc chir.rh nhu hinh
"C - :
L$c cing d6y co gi6 tri
B *il*, dfr trign d6 xac dinh T*tsiEr,L
:
\s
29 MQt rqi qll thep *lg,".tfug,46pg ch{t c6 chi6u Aai an !}t Gflp sgi dfly sacl cho dfru B ff&ng
ffi roN
c.20N
LO
vdi didm giita6cria diilrgng tim'cfia clAy s€ f ,^*,T , /,
A vfrn nlrn rei o [ ') u' \i L
./ ,f"'
Yh i/ 2.1,1" ; (l A vfin nirn tai O
#*nlm tei mQt aidm cr{ch O mQt tlo4n blng
}r "C phia A C nim t4i mQt aidm c6ch O mQt do4n Uing
I r, "C phia A D nlm t4i mgt aidm cdch O mQt ttoqn blng
|,r rd phia phin bi gdp
30 MOt vf t cd ttrdi trrgng lkg roi tg kh6ng vfn tdc ddu til d0 cao 20m xudng tldt Ldy g =
10m/s2 Tinh iIQ bi6n thi€n rtQng lrrgng cria,vflt?
'ffi'{tZ0kg.m/s B.Z0kg.rn/s:'./ c l0kg.rn/s
1w lOkg,rnls-l
4p= r
fr: r -? {'t V