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Unformatted text preview: ~ FIGURE 1 Ll~T ~i
l l ...0 Prt>b. 7 J P~ YYJ q
f 'c  F
F 1I~ I~SrJ
1;X':=: ',><+
2.,(('= ~  Fy (N) t3
! _ !1 .; F,1 i a><~ is: _~
l! A 3 t4 m. r::
N
r~
r1
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~ () 133_ ! ri ~L 1 , 3 ro I"J l 4. f2., ~e\
\ A @ A E)(15.0m/52)< 1). A
+ Fs' h I), \' _ c,.f\ .,(l I Sf hi.>' I G~C> tJ )51 n 3D
 S, h 2l>  C> _ ;  1 D 7) Cons,dty XJ,~t~01 on}
F
r::: In r:: . 5 of the <: c
/")_
..L.ly CL/
r  B) (1.67 m/ s2)x  (0.333 m/ s2)y C) (1.67 m/ s2)xA (2.333 m/ s2)yA
+
A
A
D) 1.67 m/ s2)x + (0.333 m/ s2)y .52 r>;fi'i _
"q !j
i
'i.. 7) The two fOITesindicated in Fig",e 1 act on af3.000S object. What ;~elecatiOn
object?
A
A
A) (5.00 m/ s2)x + (1.00 m/ s2)y ~ /,67J!L ~37J l Ii
t"t
~_L~~ls
tt IrJ ,'_ F, 7 = ~ :3  1" aJfJ. v",j +" )., s,'" L /1/1 7 A /
::::;7
1 ~ 0' ~cy) (3.00m/ s2'N_:; 8) A 1000kg barge is being towed by means of two horizontal cables. One cable is pulling with a
force of 80.0 N in a direction 30.0° west of north. The second cable pulls in a direction 20.0° east
of north. What should the magnitude of its pulling force be so that the barge will accelerate
northward?
A) 117 N
B) 58.5 N
E) 73.7 N
C) 120 N
D) 127N 8) 9) A policeman investigating an accident measures the skid marks left by a car. He determines that
the distance between the point that the driver slammed on the brakes and the point where the
car came to a stop was 28.0 m. From a reference manual he determines that the coefficient of
kinetic friction between the tires and the road under the prevailing conditions was 0.300. How
fast was the car going wh~er
applied the brakes? (This car was not equipped with
antilock brakes.)
A) 10.7 m/ s
IB) 12.8 m/ s I
C) 21.4 m/ s
D) 45.7 m/ s
E) 32.9 m/ s 4 9) 10) A mass of 40.0 grams is attached to a vertical spring with a spring constant k = 20.0 N / m and
lowered slowly until the spring stops stretching. How much does the spring stretch?
A) 0.0816m
,
5.~
tyJq;
B) 0.200 m
C) 0.00200 m
(<
f'Y) ~
~ CJ
D) 0.800 m
~.0196m
<t Y">~ ~ CJ 10) £ = F; k6 6'7 " Y!2.2:~CJ,OU(~ 2 ~ (.OHttJ(r;:tll'l/JY
:» ...
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This note was uploaded on 12/10/2011 for the course PHY 1111 taught by Professor Stencil during the Fall '11 term at University of Georgia Athens.
 Fall '11
 Stencil

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