Unformatted text preview: 11) A plane has an airspeed of 142 m/ s. A 16.0 m/ s wind is blowing southward at the same time as
the plane is flying. If the velocity of the plane relative to Earth is due east, what is the magnitude
ofthat~?
[41 m/ s)
B) 16.2 m/ s
C) 158 m/ s
D) 16.0 m/ s
E) 48 m/ s
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S Of) ~ • ~ J (l 0 .N~. 11) A 12) A 600kg car is going around a curve with a radius of 120 m that is banked at an angle of 20°
with a speed of 24.5 m/ s. What is the minimum coefficient of static friction required for the car
T not to skid?
C) 0.24
E) 0.48
A) 0.36
B) 0.60 12) D '" (A) 1 IT5I
J Tnrf; J~
V' ~
f'rJf\ 0' 5..~==Tr>11'>6~a?; T T", "",e.d ~~ = T Mild H:9 "~/
/  FIGURE 2 ., // Y'YI B ,/ ~LI /' ~":~e~:~';:~
/" \,:)/~
il1!) ::: Yh A S i fJ cJ .: (3.1 S.n JO ,;) ~(tS/'JJ ./;'\
""'/'."~'!" 13) Two masses are connected by a string which goes over an ideal pulley as shown in Figure 2. 13) Block A has a mass of 3.0 kg and can slide along a smooth plane inclined 30° to the horizontal.
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mass of block B if the system is in equilibrium?
a "",0
~)
1~~
B) 6.0 kg
C) 2.6 kg
D) 3.0 kg
E) 3.5 kg f3, 14) What would be the weight of a 59.1kg astronaut on a planet with the same density as Earth and
having twice Earth's ra~,;:;)
A) 290 N
~
C) 580 N
D) 1200 N
E) 2320 N 14) 15) How much energy is needed to change the speed of a 1600 kg sport utility vehicle from 15.0 m/ s
to 40.0 m/ s?
./~
A) 20.0 kJ
~
C) 0.960 MJ
D) 40.0 kJ
E) 10.0 kJ 15) 16) You are trying to cross a river that flows due south with a strong current. You start out in your
motorboat on the east bank desiring to reach the west bank directly west from your starting
point. You should head your motorboat
@in a northwesterly direction. ~
f
>.
'
\(
B) due west
V = V + VO
C) due south.
D) due north.
I
E) in a southwesterly direction. 16) A 17) An object of 1.0 kg mass is pulled up an inclined plane by a constant force of 10 N that causes a
displacement of 0.50 m. The angle of inclination with the horizontal is 30°. Neglect friction and
use g = 10 m/s2. What is the work done by the 10 N force on the object along the inclined
plane?
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2
A) 4.3 J
B) 4.3 kg m/s
C) 2.5 J~~~Jl 17) .D itI . '" "'"
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 Fall '11
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 Friction, Mass, Trigraph, kg, 2.5 j, 4.3 J

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