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Unformatted text preview: The following conversion equivalents are given:
lmile=5280 ﬁ lﬁ= 12in lm=39.37 in lhour=60min lmin=605
A particle has a velocity of 5.4 miles per hour. The velocity, in m/s, is closest to: A) 2.4 B) 1.9 C) 2.2 D) 2.7 E) 2.9 Estimate the number of times an average person's heart beats in a lifetime. Assume the average heart rate is 69
beats/min and a life span of 73 yr. A) 3 x 109 beats
B) 3 X 108 beats
C) 3 x1010 beats
D) 3 X 107 beats The components of vector A are given as follows: Ax = +8.7 Ay = 6.5 The magnitude of A is closest to:
A) 11
B) 8.7
C) 9.8
D) 12
E) 13 The cemponents of vector A are given as foﬂows:
Ax = +5.3 = 3 ~
A): 3 The angie measured counterciockwise from the xaxis to vector A , in degrees, is ciosest to:
A) 33? B) 15?
C) 24?
D} m
E) 23 A car accelerates from 4.0 m/s to 24 m/s at a rate of 3.0 m/sz. How far does it travel while accelerating?
A) 93 m B) 279m
C) 56111
D) 158m CZ : (gym/5J1“ [Vﬂw/jjz ’2 K :50 17/1/52”) Position KJK Time The graph above shows the position of an object as a function of time. The letters HL represent particular moments of
time. At which moment in time is the speed of the object the highest? A) J B) H C) I D) K E) L ii’miﬁon The graph above shows the position of an object as a function of time. The letters HL represent particular moments of
time. At which moment in time is the speed of the object equal to zero? A) 1 B) H C) J D) K E) L gl/zﬁ/Qé : {96? (3/ A train starts from rest and accelerates uniformly, until it has traveled 2.1 km and acquired a velocity of
34 m/s. The train then moves at a constant velocity of 34 m/s for 430 s. The train then slows down uniformly at 0.065 m/s2, until it is brought to a halt. The distance traveled by the train while slowing down, in km, is closest to:
A) 8.9 ﬂ"‘
B) 8.4
C) 8.1
D) 7.6
E) 7.2 “/17 [Ix/é g/ﬂ’W/mj (/ﬂW M/ ZZZ/C) éd V6: Ua :39/1/197/5 4X : ”6/? £)é§asq/f2 A test rocket is ﬁred straight up from rest with a net acceleration of 20 111/52. After 4 seconds the motor turns off, but the rocket continues to coast upward. What maximum elevation does the rocket reach? A) 487 m
B) 327 m
C) 320 m
D) 408 m
E) 160m 7%,» /57‘ {2w : (7
1/)”
‘/ 1“ 0
§(7(ﬂ17 (Z/S :' A toy rocket is launched vertically from ground level (y = 0 m), at time t = 0.0 s. The rocket engine provides constant
upward acceleration during the burn phase. At the instant of engine burnout, the rocket has risen to 96 in and acquired a
velocity of 70 m/s. The rocket continues to rise in unpowered ﬂight, reaches maximum height, and falls back to the
ground. The upward acceleration of the rocket during the bum phase is closest to: A) 26 m/s2
B) 25 m/s2 C) 24 m/s2
D) 23 m/s2
E) 22 m/s2 >47 :: Cl y; ‘/ﬂ 14/)
L47 ~: 30 U/ 2 70 ”9/5 Shown here are the velocity and acceleration vectors for an object in several different types of motion. In which case is
the object’s velocity changing While its speed is not changing?
A) {1’ '11. B) >=:
——><1l C)
V 7
a"
D)
5
——> V E) None of these cases. A rescue plane spots a survivor 120 m directly below and releases an emergency kit with a parachute. If the package descends at a constant vertical acceleration of 6.44 rn/s2 and the initial plane horizontal speed was 70.2 m/s, how far
away from the survivor will it hit the waves? A) 429m m ‘3
B)2.62km , ° Mex“ 7’20‘CM’7/S” C) 303 m
D) 445 m A boy throws a rock with an initial velocity of 3.22 m/s at 300° above the horizontal. How long does it take for the rock to reach the maximum height of its trajectory?
A) 0.164 s
B) 0.290 s
C) 0.322 s
D) 0.454 s p. Kt? : vi}? Kay‘s—«Z A foothah kicker is attempting a ﬁeid goai from 34 in out. The bait is kicked and just clears the tower bar with a time of
ﬂight of 3.5 s. if the aiigie of the kick was 435°, what was the initial speed of the bail? A} 13.? this B) 46.3 11135 C) 1.7 this D) 58.3 {IX"'5 An aircraft performs a maneuver caiied an aiieron roii. During this maneuver, the piane turns iike a screw as it maintains
a straight ﬂight path, by using its aiierons to set the wings in circuiar motion. Due to structure! strength, the airplane can
oniy‘ withstand an aeceieration of 6.} ms‘sz on its wingtips. If the wingspan is 7.5 in, what is the shortest time it can
make a fuil turn when it pertorms an aiieron roii? A) 4.9 s B) 6.8 s c.) 0.80 s
D) 105 [grad/(mew : gl/ 5"”7/S 2 7/ 55V? 7 : /2: ii“:§,?5m \_ » m 4 m m, a g 2 5772/5
and ...
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 Fall '07
 STANEK

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