1 SỐ ĐỀ KIỂM TRA VẬT LÍ NÂNG CAO 10 HAY

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v$t , vi6iUi6u th{rc , ph& bi6u vA vi& bi6u thrtc dyh lugt b6o tdacr

d$ng Xuqng cho h$ gdrn 2 vflt ?

}-Hay,n6u d4c didm r-o{tg lgc cfia v$trdn.

ffidd

c}ro bi6tphuong ptrd.p xdc d[nh &"qng tarer qr]a

a
vgt rdn phfrng ,,rn6ng
3-M0t 6tO ed khdi tusng t500kg da4g chuy&n d$ng vdi v$n t& v--30q/s .Xde d{nh :
a/ES biem thi0n tfgng n#ng crea 6m &f nO Ui ngnn f$i v#n tde tr0m/s.
blT:fnh lge l1fiA e'ung blnh ,bi6t $nfisg du® mA 6t6 ehpy chgy &o,ug &&i gi@ hem l& n00ma
4-MOt v$t.c6 kh6i t*qrg 0;S kgduqc tle
ft d0 eno z so v6i m& ddt -Ei6t eo n&ng c&a v6t trd
100J.ICy
.Ctrqn gdc ttrd nf;ng tar m6t ddr .
dTInIx d$ cao z.?
bD(da di{rh d0 cao c&a v$t mA tat dd dg,ng rdrig e6p 3 nfu t}ld rrf,$g.?
5- Thd nAol& qu6 tirft dfurg nhiet ?Fhat Ul6u va vl6t hi6na tht}e eila dinh [u&r B6rLqy-Mari6t ?Ve dflng
du&rg dene nhi€t e'ong h$ toa d0 (@V)
N{0} he g&* m^a
*i=r*,
.ifu tdc eila r6t cd d0 [6m'v13nm/s vd ed ]anr&ng kh6ng d&i
"A
.V&qn tda ctia v0t mrz cd d0 t&il vz= 2nm/s vdr ed lau&ry nghi€ng gda 500 so vdi vl :Tim t6m-g d0ree lwm:e
e0a hP
7-eA0t dmnag m6y cO khdi luffmg.m:600kg chuy6m d@mg dr6ng d&ng n€n sm.h
10mm (kh6mg cd ra-na
=dgpg-co

s6t ) . T{mh c&mg a&a
dB keo thamg m6yl8m m*rie Z rrqnmg fiiW .
a/Thaerg mrdy di [6n th6ng dtu,
h/ ThenE *dti -dlryn nqaqh de d&na vOi a = I nn/# . Cho g X0 m/s2 .
S-he0t thamh AB: ddllgrchdt c6 trqng ldd-ng F = I0 N v& AB n&sm. T'haruh AB ed thd quay
=
xunng quarnh tr trqc *&*nguogWe0 vdi. CIA=30crn. Edu Aa6treclvftr@mgFr=30N. tsd

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9- Cho [2 grarm khf chidrm ttrd mah 4 flit & nnniet dO flC . Sau khi mwg ndmg 6E$c 6p c6 ffi]6[ fiurymg
ri€ng eua khfl [d t3
. T'lrn mhift d@ khf smu khi mung mdmg ?
nG &d0a hi drdp khdi nnrEng ms u dam6g cd vgm t& vs= 3 am/s ddu va cfiaErm v&o nm@r hi uhttry rf,mIa
damgdtugy0m cdkta&Iur$qe cmz=riahr.SauvacftWrmhidadydnh ehuydmd$mgvdiv6m& gdp

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t& hi rhdp "-T3m

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cAu.r : (r cri6m),,.T,:i ptuole

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. H6y suy ra vi chime mi,h r.ang
zipsudt cria ch6t khi ph[ rhuc.,;vio',r0t d6 ph6, tr]rkhi ?
CAU 2 :(1,5 ei63)
t6 1,5 tiin chuy6n dgng flrfrng dAu vdi vfln (c 54 krMr. Lgc phrit
Yqr^6
d0ng c6 ctQ lon brng
lu'qn8 cfa xe vi coi nliu lgc c6n trlc &rrg vdo xe Hrong ;6i
klri xe chuy6n dQng. :|%hqTq
Liiy e= t-O gVr{

a. Tinh c6ng ct'ra luc cfln tr€n qrfirlg rlucmg 500 m.
l,: f *, gtug $uong tt'&r, n6u xe tit m6y mi kh6ng harn phanh, tinh cfgng n[ng cfia xe sau
khi di th€rn 10 m nifa.
cAu 3 :(1,5 di6m)
a. S1r n&.dei la gif Viiit cdng thric tinh chiAu d&i'cfra thanh sau
khi bi nung n6ng *6u 16 t6n
vi dcm v[ flmg ctpi hrqng trong c6ng thfrc
b. Tpi sao gioa hai thanlr ray thmng sit ntii fi,5n nhau nguoi ta kh6ng
---e d{t
----o thflt s6t vio
'I--chiurg
nhau mi phf,i chlr.a m-6t khe h&
MoJ thanh *v dyfg;iit dai. 11
T gJ,hieJ q0 ?g' c. Tinh xgm ptrf,i chrla rnQt klre h& rQng
bao nhidtr mm t4

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rc,;,a,a,il;d;';,i:;tTr1',?fl Hffl'';HxTttrs,itT;itr#:rf
cAu 4 :(1,5 cti6m) M6J vfllgeir.hi"e du6i t6c dunsvd,i*tr,};Jf,;

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a. Emh6yvEh6balucniv.
b. ViSt bi6u thrlc vC eidu kiftr c6n bE rg cfia vgt ndy.
t. Ttuh F.,.

cAu s :1i,s diiim)
.r"yj9t gglrgthric rinh m6men nglu lpc vd ch6 rhich 16.
b. PhAt bi6u quy tic m6men
Ivl0tthanh chiin tluong dei 7,8 m, c6 treng lugng-210 N
ye c6tr9ng6m G c6ch dAu b6ntnii
ray t) 1,1 Thanh nnv rg pg ryuy-oiisil;irv" nam ngang o cach A 1,6m. H6i
tIc d,ng ,ao .tau uoi-priu,ror" n1;ilffi rir,a"e

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binh 6p sudtkhi con I atn vinhiQt eO A O"C

1,5 atm.

Khim&nap

a/ Timtherich khi tho6t ru trroiuinr, o ai6u kig, chu6,
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b/ Tim khtii luErg ldli cdn
lpi
trong
binh ? Bi6r'khd
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irarrg ri6ng uu'f,ruIluul'ur(l'
cfial''urvrrlrYrtts'rrEuE'
chu{nli Do= lr2kgltrf:
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94U 7 ,(|,5 dicm;

Tir m6t e,it nem t4iing cftms l6n c.ao m6J vflt 1500 g v6i vgn uic
6Au h
2a mJs.-Lev

tri ml-s2, ..hql 96r rh6
iiiral oh 86 qua msi ma s6t.
a. Tinh co n6ng crtavdthic n6m.
b. Tinh dQ c.ao tai AO y6t c6 d$nq ndng gdp hai lAn th6 nEng.
c' Trong *6t^3i11'gr^"01.1r:yE" dd,E, irt tnc,em
ch4m diit, ctt--*EJ
mey '.*'
r,trLdo"s
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n[ng cfia vflt bingflrti ndng? Tai nhtingthei di€m

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cfiu I: chon phat nidu ddng. DOng ndng cfia mot vilt t6ng gdp bdn khi:
A. van t6c cfra vat tHng gdp
B. van tdc ofia vQr g!6nn hai !Sn.
.D.
c; van tdc cria v'at tdnE gd'p bdn
v&n tdc crja v6t gi&nn bdn ldn"
C6u 2: Mdt vat dang drlng yan; fi,c clqrng vho vflt m.6t lgc F c6 gid di qua rfgng t6m c;a
v8r rhi 'rAt d6 s6:
A. Chuydn dQng tinh ri€i"r
E. Chuydn dOng quay

doi.
.

.

c*u s: $d$!vpt co khOi luEng m chuy€n d$ng vfi van toc:31'n/s ddn va cl.r+rn v#i m+t
vat co kh6! lwEng'Zm
$an$dwng yen. Sau-ua cham, 2v€etdlnh v&o nhau vd c,,,rnie
-='.
chuydn drlng vcvivan tOc bao nrri6u? coiva chqm gia;a}vat a u,
A"

B. 1,5
D. lmis
C*ar 4: t{ai vflt cd cung khOi iuqng m, chuyCIn dQng vdi vqn t6c cd dq ldn h5ng nhau
v1
: ri2. F.)6ng iugng cria hQ hai vpt s6 du-ry. c tint-r theo
bi6u thric ndo sau ddy
A"
D.

2mls

p=Zrn\

r,n/s

E.:p=Z*i,

"h;;;A;.

e.3m/s

?

C.'p=*a+*i)

i=.*(r,.+yrl
cfiu s: Khi mOt vat chuydn dOng trong trgng t!.udng theo m0t duong cons
krn thi c6ng cfra trpng lgc
A. co Eia tri dutOng.
"

E, cd gia tri arr,

p,chUatinhdUdcvichrJabidtchie.uddidudngcongd6
Cflu 6: Tai sao ci{i cd-l€ (dUng cu chuy0n dd m& 6c v{n b cdc bO phan cria xe) lai cri
phdn cdn dli?
A-D{ tang db bdn ctra dung cu.
B. Dd ring m6men ctra luc
r,.
c. Dd ang dQ tr6m ciia
D. Dd tan! v6 rhdm
:
Cf;u 7: NhQn x6t rrho sau dAy vd ng6u luc lh khOng chinh x6c
a- Hq-p luc cria ngSY luc bang 0 vi hai lrlc d6 song song, ngrl-o. c chidu cing d0 i6n.
B. NgAu luc lh h0 gdm hai lrrc song song, ng&oc Jni6u, cO Eo tO., bing nhiu, v) cirng
t6c dung vi.o mOt v6t.

luc

?

mf,

T'rang l14 - Md,eA tn; 102


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C. MomEn cfra ngdu luc

"n.I.ighu

tinh theo c6ng thrlc : M = F.d ( trongd6 d la c6nh tay dbnictia

'

luc lu6n lhrir cho v6t quay, mi6n ld truc quay vu6ng g6c vdi r4at phing chfia

ng5u h-tc,

m:

Cflu 8: MQt v$t c6 kh6i luqqg
dgrng luqng cta vflt cg d0 l6n la

kg.mis

50g chuy6n dQng thang i16u;6i vfln t6c 50 cm/s thi
{}

kg.m/s

D.2,5 kg.m/s
a. ZSOO
s. 0,OZS
C" 0,25 kg.m/s
Ciu 9: Hai luc cira ngSu,luc c6 dQ lon F = 20N, khoing c6ch gifia hai gi6 ctra ngSu luc
lh d = 30 cm. OOi yOi trqrc quay vu0ng goc.voi m6t phing chrla ng5r,r lr/c:thi
rn6men cria ngSu luc lh:

,

A.M=0,6(Nm). E.M=600(Nm). a.M=6(Nm),

D.NI=60(Nm).
Cfru tro: Chqn cAu ph6t bidu dring: C8n bire bdn lh loai cAn bing mh tai vi tri c6n baag
trong tem
A. thip nhAt so vdi cdcvi tri lxn
C. cao b4rg vdi cdc vi tri lfln

v0t. c6

I

eqn.
c0n.

E. cao nhdt so v1i cdcvi tri lAn cfln.
D. bdt ki,so vdi cdc vi trf lfln c6n.

Cfiu ln: DQng luqmg cria vf,t b6o todn trong trucrng hqrp ndo sau ddy ?
a. Vflt dang chLtyCn dQng thing dAu tr6n mat phdng nim ngang
ts. V4t dang chuy€n dQng trdn d6u
c. Vit O*E
Oi,rg rfr*f, O,an q0u tr6n mflt phpnenim ngang khOng m a sht
"frrVg,
D. Vat dang chuy€n dQng chflmddn d0u tr0n mptphlirg nim ngang kh6ng ma s6t
"Cau 12: MOt vdt dang drlng y6n thi chiu tdc dung cira luc c6 dQ lfu khdng ddi F lAni vfi,t
chuydn dQng vi dat vAn t6c v spu khi di hOt doan drlong s. Ndu h,rg tric dgng c6 dQ lcrn
}'

dilongls. :

vAt g6n vao ddu N cria lo xo ddn hdi c6 dQ crfng k = 200 N/rn
dLfqc ddt tr6n mqt mdt ph&nE n5m ngang, ddu kia(ddu M) ctia Io xo cd
d!nh. Chidu ddri td nhi6n cria ld xo b,ing 30 cm. Chqn gdc thd ndnE tai vi tri
ld xo khonE bi6n dang. Ddy vat vd phfa ftl sao cho chi6u rldri ld xo chi con
lai lA 25 crn; Thd nEng ddn ndi cria vat tai vi tri d6
\
m,2500 *J.
c" 250 J
D" 5J.
Fr,. 25C ffi"j .
Cfiu x4: CO ndng cria vpt ld
a. m6t dai lugng vd hudnE lu6n kh6ng ddi.
B" mQt dai lugnE v6c td
e. mQt dai hlQng vo hUdng luon luon dddng
c6tu tr3: MQt

la

,D.mQtdailuqngvohUdngc6fhd&m,dUdngho{ebing0

ts: MQt ot6 c6 khdi lgng 1600kg dang ch4y v6i v{4 t6c 50km/h thi ng&di I6i nh)n
th0y mdt vAt c6n trudc mdt c6ch 6tO khoAng 15m. Ngudi dd tit m6y vi hdm phanh
khdn cdp. Giri srl fgc hdm 6t0 kh6ng adl va bang 12 000 N. Xe 6td s6:
' 'f,,
C&u

E. Jtrg trttdckhi t6i vflt ciin.
a. va cham

's6tvho vdt cin.
*
c. dtrng
ngay v&t cin.
D, dtng c6ch v0t can dring 5 m.
cfiu 16: Khi xdy nhA, ngwcvi ta thucrng dao m6ng r6t sfiu vd d6 mong rAt n5ng,
de lam gi?
A.d9 hathdp trgng tilm,tdngclQ virng vang cho cdn nhd.
m, dC tdng diQn tfch ch6n d5, tang dQ vffng vang cho cdn nhd.
.

Tiang?/4 -

rraa O0

thi

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C. d6 mua n6ng kh6ng ldm mpc m6ng nhd.
D. dC hA ri6ng
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t qrg ldm,inngdgirfnrg vang cho cdn
"uo
Cffu 17: Dudi tric dgng cria mQt lpc kh6ng A6i bang 4 N, mQt vflt thu gia tdc vi chuy6n
dOng . Trong thli gian Z s , dg Ui6n thi€n d0ng luq,ng cfia vQt ld
8.6
. trl
c-ZUg,
^4. 8
S8
Ciu 18: Ba luc ddng qqy tdc dUng lOn vAt ran c6n O*, c6 dQ tcm idn lo le 12N, t6N va "lS
20N. Ndu luc 12i{ kh6ng t6c dung vho vAt nfia tfri hqplgc tdc dung l6n vflt c6 dQ I6n
e.
c.
D. 12N.

nhd.

kg.m.s

16N.

kg,ms

8.20N.

tt

N.s

.

l}:

15N.

Cfiu 19: MOt dm vfunryd\e48N dugc b6c qua mQt bC nudc. Trgng tdm ctntdnvdn circh
rli0m tiia P 1,2 m vir"art aic* ru;
0,6m .r1l" rna r5*
#r 6ng're; aiA;iu, l,
,)
bang

rd

e

C6u 20: KOt lu6n nho ddi d.ay vd didii ki6n c6n b6ng cfia m6t
ba luc khdng song song li ddy dfr?
A. ba h,rc d6 ph6i ddng phing vi ddng quy.
E. ba luc d6 phii ddng quy.
c. ba luc d6 phAi ddng ph&ne.
n. hqpiuc cira hai hlJbet k)"ph6i cAn bang v6i luc rhrl ba.
CSu Ztr:: C6n

dia ld m$t,img,dqng

c" elinh ly dOng

vit rin chiu tdc dung ciia

cfi,a

n5.{8.

s,

D"
luat b6o todn elOng

luo.

ng.

A" C6'ng crla trEl'lg luc bing hiQu thd ndng treng trudnE cfra vat'' tAi"vi
. cuoi va tal vi tri ddu.
B. Trong IUc sintr c6ng dmkhi v6t rol t& tr6n cao xudng thdp

tii '

Trqng ltJc sinh cOnE drJdng khi dua v&t ttJ thdp l6n caol
m" C0nE cfra trq:nE luc chi phg thuQc vi tri ddu vii cudi cfia quf dAo.
cdu zs: Scyrr v! ndo sau d*y kh6ng phdi la dcyn v! ct}a c6ng sudt ?

n. .,1.s
E" m5 !Uc.
c. Nl.m/s
D. W
C.

:

cffu 24: KhAu sring d4i bScn{ng M 0,5 tfrn dangdung ydn tr6n mat phdng nim ngang,
cd ndng sfing nirn ngang, bin ra nrQt vi6n dpn k[oi luqng
I kg bay vJi vgn t&

vl

m:

500rn/s(sov6id6t).B6quamas6t.V3rrt6cg.ifltliricriaifn8ldA" 0,5 rrils

B. 1 m/s

C.250 m/s

B. 1000 m/s
Cf,u 25: tr-uc nlo khidn cho cdchlnh tinh chuydn dQng quanh Mat Trdi?
A trong iuc.
n. h.rc dhn hdi. .
C.lgc hap d5n. n.lgc ma s6t.
Cfru26: Trong IoBi chuy6n dQng ndo thi vQt cb tlQng n6ng vd c10 lon r16i cdn vectcy ddng lyong ludn bi6n il6i theo thoi gian?
a. chuyfn dOne"thingldy

ts. chuy6n dQng rrdn d6u
,r
C" chuy6n dQng thhngUi€n OOi Oeu
o. chuy6n dQng roi tg do,
cfrw2TzFlai chi em dirng mQt chi6c eay dc khiCng mQt bao"g4o c6 trgng luqng 1000N..
Ed gi6m bo't stic n[ng cho chi ndn ngudi ern dd treo b.ao gpo cdch vai minh 36 cm vd
cilch vai chi 54 cm. F{6i llrc ctia g$y dd l6n vai em nhiAu hcrn h;c cria gQy dd l€n vai chi
Ia bao nhi€u ?
A.600 i-.1
B" 4A01.-l
c.200 hl
B. 300 ]N.
Trang 3/4 - Ma

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tlii 102


thtng 96 truEt th5ng clAu ti6n san nha nlm nq19
;,iv rrop uoipr'""ns ng#d goc io". u*i ngwdi d6 k6o diy tjins 150N.
C6ng,cfia lwc ma sdt khi thirng truqt tfwgclQm la
-n._z,sgalB.-300bJ..c.2.598J
-': -_- .
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c6u 28: MQt

;iil"i

nguoi k6o

mQt

:

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Ciu 29: O truong hgp nbo sau d6y,lgcrc6 tdc dung lhm cho v{t r6squay quanh trqc?
A. Lrlc c6 gi6 c6t trgc guaY:
B. Luc cA giasgng song v6i tnlc,euaV.
...
C. Lgc cOlia"ar"'tron"g m4t phing vuOng g6c v6i trgc quay vd khOng cit truc quay.
D. Lqc cO lia nam trong matbhanE wong g6c'v6i truc quay vh cit tryc qyay.

:

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cffu 30: DQng ndng c&a'''v&t t6ng khi

tac dUrig Ien vfit sinh cong

.

I,

ffi" C ac, iqfc

:

c. Gia tdc cnia vAt tfrnE
ffi"

Cac

nLrc

td:e dq;ng I,8r: vat stnl"t corlg dtfdng
.l

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c


ErgC Kt 2. NANI X{QC 2013 - 2014
naOm vAr
L(FF to rEAroG cAo
,
Thdi gign: 45
Cffu 1:(1,0 Aiem; Cho bii5t nhu thii ndo ld b"i6n aqngco cta vdt.rfin? So srinh sg kh6c nhau
gita bi6n dang co vdr sy n6 vi nhiOt crp v{t rfuy ? Dinh nghia su n0 dfl{ va vi6t c6ng thric ? Ciai
thfch tpi sao giiia 2 thanh ray d&ong sit nOi 1i6n nhau nguOi ta kh6ngtfit chring s6I nhau ?
e ' ---.--o
Cfiu 2: (1,5 di6m)
a. Vi6t bi6u thric tinh c6ng trong trudng hgrp t6ng qu6t ? I(hi nio thi cdng cria mQt l*c
c6 giit tri
ducrng? $hi ndo thi cdng,cria mQt lgc c6 c6ng 6m ?
b. cong cria ngira k6o xe vi clia xe kdo ngua ld c6ng duong hay dm?

BE

TEXI

.

lI-

"

phrtt

c. Khi k6o vflt kel
ryql$opn dulng,s nh6t d!nh, git cho cdng A khOng thay ddi vd mu6n giem
lyc kdo thi c6n chri y eti6u gi nhu th(S ndo ?
Cflu 3: (1,5 di6m) MQt con l6c cton gdm sqi ddy dni 50 cm vi vflt nh6 4009 rreo 6 dAu d6y.

Kdqvftnh6sao9hosOiddyhgpvdiphuongthAngdringmQtg6c600r6ittarng

.L y g:10

Em hdy n6i16
nflng, thiS nEng vi co ndng cria v4t nh6 bi6n dOi nhu th6 ndo khi
-d.q"e
v4t cti tir v[ tri cao nh6t rt6n
vi tri th6p ntr6t
b/ Tinh dQngnlng cria vflt taivi txi thdp nhdt .t
C4u 4: (1,5 iti6m)
a. VitSt bi6u thric iilrn e6"g lugng? Gqit6n vi dcrn vi cdcd4i tu-ong trong bi6u thric?
q ryft y0t nhO kh6i tuqn eT.ketruqt xu6ng mQt d6c nhEn, t4i mQitfrOi Ei6* x6c dinh c6 v4n
t6c 3m/s, sau {6 4s c6 vgn tdc 7m/s. Tinh 9?u,5j (1,5 eti6m) MQt qui d4n 1,8kg tlang biy- tna"g dring len cao voi vfln tocz,+onls rhi n6
thenh hai minh , mirnh thir nh6t c6 khSi
[ons lkg bay xi6-n ten v6j v4n tbcZ40m/r tt
phuong lQch inQt g6c 600 so v6i dutrng
al vc c6c vecto dOng lu-o. ng ?,ff,ffcria qu6 dan vi cria c6c manh v0 ?

blTfnh ttQ lon vfln tric cria manh thrf hai Z
Ciu 6: (1,5 rli0m)
Mqt oan Bhdng c6 th6 tich 40m3. Kh6ng khi trong phdng c6 nhigt dQ Z70C vd 6p su6t latm.
a. Tfnh sd ph6n ht l&i c6 ffong binh ?
b. Dd ap sudt khi t[ng th6m l0% iryr"At U* dAu thi nhiet dO khf ti-Uao nhi6u ?
cAu 7 z (1,5 diem) MOt binh kfn c6 th6 tich 0,4 m3 , chta khi & 270 Cvi 1,5 atm .Khi m& n6p
binh 6p su6t khi cdn latm vi nhiQt dO h 00 C
a/ Tim thd tich lihi th6at ra kh6i binh 0 tliau ki6n chuAn ?
blTinh t&6i luoqg khi cdn l4i trong btrh tBi6t r.rr8ir"ql g ri€ng cria khi d diAu kien
chu6n H Do :1,2kglm3 .

t

ttrfing-OmJ.

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*


{6

"ret

Kidm tra I tidt
MOn: vflt li - L{P l0 (Nfing cao)
e$
Tht i gian: 45 phrit
Mfl d6:

Trddng THPT Cdn Giu$c
rd vflt li

fi)l

:

I qui cdu gdn vio ddu mOt soi diy c6 chi6u dii

80cm kh6ng gi6n, khdi
tei c]{a sQi df,y drfgc gifr cd dintr.-t<6o dfly l€ch kh6i phrrdng thfing I
hfQng kh6ng d6ng t?, a6,
"on m/s2. Vfn tdt q{c el4i cfia_qufl ciu c6:gi6 rri
gO" ig,rAi tUa ,t e. L{y e= lQ
D, 1,98 mts
c. l'89 m/s
,.'l,e+ ry!,
fu t,+o
gdm I qui cdu c6 khdi hrong m sdn vlo.di"39, soi dfiv khdng gidn c6 khdi
_qggog tdc don
rii.,a. ro. i aav o?qrlir.o,ainr,. 5Qo day lgcfr k!6i nlrrong thfng I
tr/Qng kh6re oans r?,-Ia"
(< c(r) c6 bidu
r-qrc clng ddy khi diy rreo hgp vdi phuong thEn'g tttlns mQt 969 a

.1. MQt con lf,c tlon g6m

fn

t

-1, 1'

r

t'

/t

ri"

;ffiHtfia-"ii

u{y g=

10

m/s2.

;l

nhdt ctrid110!ro5. M6t vi6n d4n dang bay v6i vfn tdc 20om/s thi nd thtnh hai minh.Ivlfinh thrf
tdc SOOrnfs. H6i mflnh
t trdi t rg"g cria vi€n-ttgn vi biy theo hrrdng ban tldu cfra vi6n den vdi vfln
thf hai bay theo hudng nio vdi vfin tdc bao
300m/s
tdc
vdi
v0n
ttiu

ban
Theo,hudng
B.
t6c
vdi
vfn
dd-u
A. Theo hddng ban
ffitheo hudng ngu{c l4i vdi vfn tdc 250m/s
c.Theo hudng ngr1gc lli vdi vflntdc
qufr cdu c6 khdi
6. M6t lb xo c6 dQ cttng k = 20N/mrtIiiqo! 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 =
D' o'075J
c.
B.

nhi0u? ,
250m/s
300m/s

ffio,tr

o,o25I
AIL: W , q#

:

l0m/s2.

;

o,o5J

(n)
uff
t
t"" )o
=

:

\A'r lK a'{', I
'o'l/'"^'p'
I.

zqql:

f'-'=o'/'


'@ Ic

&

a

,i'

-oD.

': O

B{n mQt hbn bi thuf tinh c6 khdi lugng m vdi vfln t6c 5m/s vio mQt hbn bi thCp dang drlng y6n
ttrdi tugng 3m. Bidt va chqm li tnf. c di$n din tr6l. finn d0 ldn vQn tdc cria hdn bi thuf tinh sau
.A

ch?m?

S,\

2,5mls

B.0m/s
C. 10m/s
D.0,6m/s
DQng nlng cria vAt gifrm khi
v6n tdc f,rn ,"
B, gia tdc giirn -/
ngo?i luc gi6m ,/
ffi ngbai lgc sinh cdng flm
9. Ddn vi nio sau ddy kh6ng phdi l{ ddn vi cria c6ng sudt?
D A{a
A. I{P (mr l{c) ./
C.w.-'
$}l J.s' ,/
? 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
q

A.w=L7n,/
2

Bkw=*
I l. Xdt mQr vgr rdi tg do. Khfro srit h€ vf t vi udi tlft"
e. Ndu thdnf,ng giim thi dQng ning c0ng girflm -/
C. tldrr dlQng ntrng gif,m thi thdnnng teng,/
12.Cd niing lir mQt tlSi lu{ng

A. lu6n

dtlng

ta c6 thd kdt lu4n:

{

D.W=mghra

/

B. cdntrng kh6ng bio wan
ffi pO giim thdning blng {tQ rxng d1ngnlngy

B. lu6n khr{c

0 ..-0' ho{c

im

z/

i;5r#i11,:ff;'ffi1"^{, *^y ddi trong tnrdns,ff,Tr::lJ}?iu"g
n. 6 to chuydn dOng thEng d6u
B. ve tinh chuydn dgng tr6n ddu
D. vft drfng y0n
ffi VatchuydnttQng chi dudi t6c dgng cria trgng lgc
14. MOr ngudi k!,o mOt thtng
c6 khdi
l-od"
c6ng vi c6ng su6't cria ngrldi d6?

n, toool"

lygng 15kg chuydn dQng ddu I6n cao 8m

roowr, - B. 800J,400w-./'

c. 1000l,5o0w

.-

-rrong

20s.'ilnh

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 khi 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
lir cd sd clia nguy€n tdc bhuydn dQng bing phin n/c cria tilntrta
$.
90lq lu.One
-rdng
dQng
lugng cfra h€ kin c6 tIQ ldn khdng adi z
Si
pZ. Ueu m$t vflt chuydn dQng trong 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
irQ bidn thi€n cd nEng bing c6ng cria trgng l{c
P.
,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
B. c6 giri d6ng p8ng


r'H
t,
1t4

1

C. c6 gi6 ddng quy

D, c6 hgp.lf" bXng 0
20. Phdt bidu nio sau dAy li
A. Hgp l{c hai l{c song song ctng chi6u
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
C. Hgp lyc hai l{c song song ctng chidu c6 ilg ldn bing tdng rtQ ldn cfia hai lgc thinh
D. Hqp I{c hai'l1rc song song ctng chidu c6 gi6 chia trong didm tl{t cfra hai lgc theo hS thrlc

sai?

F.
tF,

*

li

..' ,
./ 4
phdn /
..-/

d^a
d,

nio sau ddy h1c c6 t6c dgng'lim quay vft rdn quanh mQt trgc?
A. Lq/c c6 gi6 nlm trong m{r phEng vuong g6c vdi truc quay vi c{t tryc quay 1
21. Trudng hgp

i

phfrn vu0ng g6c vdi truc,quay
q4! phf,ng
,ffi" LUc cg:;gld *Eqgr,ong q4.I
ry :{f" {,,tr{",+4ln"$rong
C. LUq.c6i,er4d$t.tfuc.qqay,--

vi kh6ng cdt trpc quay _/,

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
D. (n) vh (n[0
$t

./

./

Ls.Chgn,cflu

GII] ./

,/

saf,

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 0
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
8.75N

c. l00N

D. Mot gi6 tri kh6c

4

{)
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 / '
c.2oooN /
D. chua dri dii kiQn dA x6c dirfr_ ,.ffi sooN

z7-"!a!ngu&i

glle qgt

./

i:(}1

oo,l


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

ffi

roN

B.

c.20N

*il*,

dfr trign d6 xac

dinh

T*tsiEr,L
:

\s

29. MQt rqi

qll

thep

vdi didm giita6cria
A vfrn
nlrn rei
vfin nirn
A.
tai o
O

*lg,".tfug,46pg ch{t c6 chi6u Aai an !}t . Gflp sgi dfly sacl cho dfru B ff&ng

diilrgng

tim'cfia

clAy

s€ f ,^*,T , /,
[ ')

#*nlm tei mQt aidm cr{ch O mQt tlo4n blng }r
C.

nim t4i

mQt aidm c6ch O mQt do4n

Uing

D. nlm t4i mgt aidm cdch O mQt ttoqn blng

I

"C

r,

|,r

"C

u' \i L LO

phia A

phia A

rd phia phin bi gdp

30. MOt vf t cd ttrdi trrgng lkg roi tg do 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
lOkg,rnls-l

4p=

ti

r

1w.

fr: r

-?

./

{'t

V

=-

,f"'

Yh i/ 2.1,1". ;
(l


'

sd cD -DTLA
TRTIOT.{G TIIPII CG-

nf

)
4fr {

rur0u rRA cnar Lugr{G HQC ri u
M6n:v$tlrlo .. d.^' ,, ..'.

thdi giansiao d")
ph6t
c6u 1:
bi6u vi vi6t o,r, *,r11}l;1,1?':j"i]jy#'#€::
Cf,u 2: Duer- 6p sudt tO\t/m' mQt lugng khi c6 ttr6 tich h 10 lft. Tinh th6 tictr cria khi <16 du6i 6p
:su6t S.tONl#. Ct o Ui6t nniet d0 crla hai rang th6i tr6n
li nhu nhau.
Cfiu 9t TI d$ cao 10m so voi m{t Ait, mQt vflt-c6 kh6i luqng 2kg dugcndm thdng rtune len cao v6i
vgn ti5c dAu H 10m/s. Liiy
,
l.Tinh dQ cao cpc d4i md vft tlpt ttu-gc so v6i m6t ddt. ,lrl,^n --1t h?
2.Khiv0t & dQ cao nio so vdi m{J e6t ttri vat c6 ttQng nturg baog ba l6n th6 nang.
CAu 4z MOt 6 tO co khOi lugng 1 trin chuyiSn tlQng ile; dudmg neang khi qua a cO't {n tOc 18km/h
vd d6n B c6ch A mQt khodng ld 100m vdi vfln t6c 54km/tr.
fjlrc k6o
dOre co dd thuc hiOn t6n doqn ttuong AB. 2!d, dW
l. Iryfr:0ry mi
"Uu
Z.DAnB tei *etiitmay vd*.ii6}
tpc chuy6n dQrg rna, Aa" Aai do ma s6t, vd Atm{:ryri@iC.
Tinh d0 ddi quflng ttudmg BC.
3. Gie st xe tttin D thi ttQng n6ng cta xe bdng nta tlQng n[ng t4i B, tfnh clQ dii quilng ducrng BD.
Cho biiit hQ s6 ma s6t gitla bdnh xe vi m{t ttucrng kh6ng thay d6i trong que trmt xe cfiuy6n

tlQng p: 0,1. Ldy g=10m/s2

e:10m/s2.

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Ciu

,uat
I d[rg tfch mQt l*rOi t360

5: Khi dun n6ng

l
ban diu. Tinh nhiet dO.ban itiu cria
. ,.
Cf,u 6: .C6 ,12t kil"#6r,ilAii"i' +tir b Toc.Sau *hi dun n6ng ding npluErs khi tr6n a6n ,r,iet aO
t thi kh6i lusng ri6ng cfia khild l,2gll. Tinh nhiQt d0 t cta khi.
Cn_, 7: NCu dEC ai6m treng tdm cria VR. Neu ptruong ph6p x6c tllnh trgng tdm cria \lR mdng,