Latihan Soal Bab 3 Tambahan 2

8/14/2019 Latihan Soal Bab 3 Tambahan 2

1/13

SMAK 1 BPK PENABUR Jakarta Nama :__________________ Fisika kelas X semester 1 Kls/No:__________/_______

Bab 3

KINEMATIKA GERAK LURUSLatihan Tambahan 2

QUESTIONS FOR KINEMATICS1 Descibe a !h"sica# sit$ati%n& '%e(am!#e& )ith a ba## % a ca& '%each %' the '%##%)in* cases+ State)hethe the %b,ect is s!ee-in* $!% s#%)in* -%)n+

.a/ a 0 1& v 1

.b/ v 0 1& a 1

.c/ v 4 1& a 5 1

.-/ v 4 1& a 4 1+

2 Can a b%-" ha6e

.a/ 7e% instantane%$s 6e#%cit" an-"et be acce#eatin*

.b/ 7e% a6ea*e s!ee- b$tn%n7e% a6ea*e 6e#%cit"

.c/ ne*ati6e acce#eati%n an- "etbe s!ee-in* $!8

3 .a/ Can the ma*nit$-e %' thea6ea*e 6e#%cit" e9$a# thea6ea*e s!ee-8 I' s%& $n-e)hat c%n-iti%n8

.b/ Can the -iecti%n %' the 6e#%cit"e6ese i' the acce#eati%n isc%nstant 8

4 A ,%$ne" c%nsists %' t)% se*ments&each at c%nstant 6e#%cit"+ Un-e)hat c%n-iti%n )%$#- the a6ea*e6e#%cit" '% the )h%#e ti! e9$a# thea6ea*e %' the t)% 6e#%cities8

5 An %b,ect is -%!!e- '%m a hi*ht%)e+ Ma:e a s:etch %' h%) thes!ee- 6aies )ith the -istance'a##en )hen ai esistance is.a/ i*n%e-& %.b/ ta:en int% acc%$nt+.c/ Can an %b,ect s!ee- $! i' its

acce#eati%n is -eceasin*8

6 True or false; .a/


2/13


acce#eati%n at this !%int8

8 Ba## A is th%)n $!& )heeas ba## Bis th%)n -%)n )ith the same initia#s!ee-& '%m the same %%'t%!+

C%m!ae the s!ee-s at )hich the"#an->in the absence %' ai esistance

9 A ba## is th%)n $! an- then 'a##sbac: t% the *%$n-+ =hich %' the*a!hs in Fi*+ 3+3? best e!esentsthe 6aiati%n %' its 6e#%cit" )ithtime8

1

0

I' ai esistance is ta:en int%

acc%$nt '% a b%-" 'ie- 6etica##"$!& )%$#- the time t% ise be*eate % #ess than the time t% 'a##8(Hint: =hat can "%$ -e-$ce ab%$tthe initia# an- 'ina# 6e#%cities8/

1

1

A b%-" is 'ie- $!)a- )ith s!ee-vo. It ta:es time T t% each its

ma(im$m hei*ht H.T$e % 'a#se;.a/ It eaches H/2 in T/2..b/ It has s!ee- vo/2 at H/2.(c/It has s!ee- vo/2 at T/2..-/ It has s!ee- vo at 2T.

1

2

T)% ba##s ae -%!!e- %ne a'te the%the '%m a ta## t%)e+ As a'$ncti%n %' time -%es the -istancebet)een them incease& -ecease&

% sta" c%nstant8

1

3

Gi6e an e(am!#e %' a case in )hichan %b,ect@s 6e#%cit" is 7e% b$t itsacce#eati%n is n%t+

1

4

Can an %b,ect@s 6e#%cit" e6e be in a-iecti%n %the than the -iecti%n %'its acce#eati%n8 E(!#ain+

1

5

Ae an" %' the '%##%)in* t$e8(a) An %b,ect can ha6e a c%nstant

6e#%cit" e6en th%$*h its s!ee- ischan*in*+

(b) An %b,ect can ha6e a c%nstants!ee- e6en th%$*h its 6e#%cit" ischan*in*+

(c) An %b,ect can ha6e 7e% 6e#%cit"e6en th%$*h its acce#eati%n isn%t 7e%+

Bab 3: Kinematika erak !"r"s #a$e&o%13

Setiap cerita pasti memiliki akhir. Tapi dalam kehidupan, setiap akhir adalah awal yang baru.


3/13


(d) An %b,ect s$b,ecte- t% ac%nstant acce#eati%n cane6ese its 6e#%cit"+

16

A abbit entes the en- %' a-ain!i!e %' #en*th L. Its m%ti%n'%m that instant is sh%)n in Fi*+m -ash b"$nnin* t)ice a%$n- an in-%%cic$#a tac: that is 1 m incic$m'eence+ Estimate hea6ea*e s!ee- an- a6ea*e 6e#%cit"

1

8

A st%ne is th%)n stai*ht $! in theai+ It ises t% a hei*ht h an- thenet$ns t% the th%)e+ F% the timethe st%ne is in the ai& s:etch the'%##%)in* *a!hs;a+y 6es$s t;b. v 6es$s t;c. a 6es$s t.

1

9

Un-e )hat c%n-iti%n is it )%n* t%sa" that an %b,ect@s acce#eati%n isne*ati6e )hen the %b,ect is th%)n$!)a-8

D%es the si*n %' the acce#eati%n

-e!en- at a## %n the -iecti%n %'m%ti%n8

Can an %b,ect@s acce#eati%n be!%siti6e )hen the %b,ect is s#%)in**%)n8

2

0

The acce#eati%n -$e t% *a6it" %nthe m%%n is %n#" ab%$t %ne>si(ththat %n eath+ Estimate the ati% %'the hei*ht t% )hich "%$ c%$#- th%)

a baseba## %n the m%%n t% the

Bab 3: Kinematika erak !"r"s #a$e3o%13



4/13


c%es!%n-in* hei*ht %n eath+

EERCISES FOR KINEMATICS1 .I/ In Se!tembe ? in Se%$#&

Ca# Le)is set a ne) )%#- ec%-b" $nnin* #11 m in +2 s+ =hat)as his a6ea*e s!ee-8

2 .I/ A %a- ,%$ne" ta:es h 31 minat 1 :mh& inc#$-in* a ha#' h%$bea: '% #$nch+ %) m$ch time)%$#- be sa6e- b" ta6e#in* at ?11:mh instea-8

3 .I/ A c"c#ist m%6es at ?2 ms '% ?min an- at ?H ms '% 2 min+ Fin-the a6ea*e 6e#%cit" i' the sec%n-!at %' the m%ti%n is .a/ in thesame -iecti%n as the 'ist& an-

.b/ in the %!!%site -iecti%n+

4 .I/ F%m thex 6es$s t *a!h %' Fi*+3+33& 'in- the a6ea*e 6e#%cit"bet)een the '%##%)in* times; .a/ 1an- 2 s& an-

.b/ ? an- 3 s+

5 .I/ F%m thex 6es$s t *a!h %' Fi*+3+3& 'in- the a6ea*e 6e#%cit" '%each %' the '%##%)in* inte6a#s;

.a/ 1 t% 2 s

.b/ ? t% 3 s&

.c/ 2 t% s&

.-/ t% H s+

Bab 3: Kinematika erak !"r"s #a$e'o%13



5/13


Acce#eati%n

6 ()* A bir+ %lies nort, at &- m/s %or 1. s )trests %or . s an+ t,en %lies so"t, at &. m/s

%or 1- s For t,e 0,ole tri# %in+:(a* t,e a2era$e s#ee+

(b* t,e a2era$e 2elo4it5

(4* t,e a2era$e a44eleration

7 ()* Fin+ t,e a2era$e a44eleration in ea4, o%t,e %ollo0in$ 4ases:(a* a 671- 8"mbo 8et starts %rom rest an+

rea4,es its takeo%% s#ee+ o% 39- km/, in

.- s

(b* a na2al 7orsair 8et a##roa4,es an air4ra%t4arrier at 1- km/, an+ is bro"$,t to rest

in ' s b5 a net

(4* a ro4ket sle+ ,its 1''- km/, in & s

8 ()* A baseball is t,ro0n at 3- m/s. ;,ebatter ,its it an+ $i2es it a 2elo4it5 o% '- m/sin t,e o##osite +ire4tion )% t,e ball an+ bat

are in 4onta4t %or --' s 0,at is t,e a2era$ea44eleration o% t,e ball +"rin$ t,is inter2al m an+ ,as2elo4it5 v = ' m/s. At t = > s it is at ? = @.

m an+ ,as 2elo4it5 v = @& m/s Fin+:

(a* its a2era$e 2elo4it5

(b* its a2era$e a44eleration

1

0

()* ;,e %ollo0in$ +ata 0ere re4or+e+ %or a

19 ;o5ota 7amr5 Fin+ t,e a44eleration

%or ea4, r"n ass"min$ t,at it is 4onstant:

(a* - to .- km/, in ' s

(b* - to 1-- km/, in 1' s

(4* >- km/, to 1-. km/, in & s

(+* brake+ to a sto# %rom 1-- km/, in ' s

1

1

())* ;,e #osition o% a #arti4le is $i2en b5

x = . sin (1&-t* m 0,ere t is meas"re+ in

se4on+s (;,e ar$"ment o% t,e sine %"n4tion

is in +e$rees*

Bab 3: Kinematika erak !"r"s #a$e.o%13



6/13


(a* E2al"atex at -1@s inter2als %rom t = -1

to - s an+ make a #lot o%x 2ers"s t

(b* ,at is t,e a2era$e 2elo4it5 bet0een

-. an+ -9 sm/s 0,i4, is 1- o% t,e s#ee+ o%li$,t< Ass"me it starts %rom rest

2

3

()* ;,e len$t, o% a train is '' m )ts %ront is1-- m %rom a #ole )t a44elerates %rom rest

at -. m/s&

(a* Go0 lon$ +oes it take to $o #ast t,e

#ole- m strai$,t

a,ea+ )% t,e +ri2erHs rea4tion time is -. san+ t,e ma?im"m +e4eleration is m/s&

4an ,e a2oi+ ,ittin$ t,e moose 0it,o"t

steerin$ to one si+e

Latihan Soal Bab 3 Tambahan 2

Documents

Transcript of Latihan Soal Bab 3 Tambahan 2