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Unformatted text preview: Midterm I
Physics 195 Spring 2007 M
Name 6 1 Score / 100
Write your name on this exam and your Scantron! Problems 1—6: Put your answers on the Scantron. If your answers do not match exactly
those shown, pick the closest one. No partial credit. l. (10 pts.) How many seconds are in a year?
a) 4.50><106 1 \(ga. 365451 g‘l how 60 “W (".05
b) 3.60 x103 Y car (AMY \Mur MM
c) 5.26 x 105
. 3.15 x107 ._ ﬂ
1.89x109 ‘ 3"; * IO 5
2. (10 pts.) A particle has a velocity—time graph as shown. 5 lo? 2. 4/ v=mt
t a t?
x;g\/dt M3 Which graph best represents the position of the particle: x _—"'— x I x
a) t b) t c)
x x
d) t e) t 3. (10 pts.) An athlete is running at 15.6 m/s. How fast is this in km/hour? a) 5.62 km/hr
® 56.2 km/hr
c) 31.2 km/hr
d) 4.3 km/hr
e) 25.1 km/hr (‘56 1:»ng :: 5—62.10: 603 (:0 mi’\
MM \/\('" (10 pts.) A particle moves according to the equation x = 131‘2 + 5 , where x is
measured in meters. Find the average velocity for the time interval 2.00 to 3.00 s. @650 m/s b) 75.0 m/s 0) 60.0m/s d) 21.7 m/s e) 13.0 m/s
"“ a AX ._ X4: ~><§
V A t )1
6\
U] (10 pts.) An airplane starting from airport A ﬂies 300 km east, then 350 km at 30.00 west of north, and then 150 km north to arrive finally at airport B. The next
day, another plane flies directly from A to B in a straight line. How far will the pilot travel in this direct ﬂight? TWO
N
a) 325 km .
b) 800 km 93 w+ E
c) 453 km 3‘50 ,4
d) 125 km 5
@D 470 km 300 O
m = 3m ~ ammo = 125' R1: 55060530°H50 = H65 31W —= L170 (10 pts.) In what direction should the pilot travel in this direct ﬂight? a) 894" south of east
b) 746" south of east i
81.2° north of east i 9“
74.6° north of east l‘ I
e >§
R 154" north of east Abnti? "*7 Bi
Rx Problems 78: Put your answers on the Scantron and show your work. Limited partial
credit will only be given for work shown. 7. (20 pts.) A ball is thrown vertically upwards to maximum height h = 23.00 m.
With what velocity was it released? a) 19.3 m/s
b) 225.4 m/s
21.2 m/s
d) 23.0 m/s
e) 2.3 m/s 8. (20 pts.) A second ball is thrown exactly 1.60 seconds after the first ball is thrown. This ball is thrown faster than the first ball, such that is passes the first
ball exactly at height h. What was the initial velocity of the second ball? a 43.8 m/s 3 l, 5 9) 40.2 m/s La" ’2: 6 c) 46.3 m/s (1) 49.6 m/s e) 35.2 m/s b“ 5—— Vikki} tW 3'
. _.— ,L ( 3
u 2 J; v{ Jc .
__ ,2 h 2 (3 3 _
f‘ .——— .————— '3 ) — 9?. ( 7 S
V; cm. 2—
Bq\\ ; _\__a : t‘nt "‘ 2i7§”i\h.§ ‘2 >75
3.
.L
\it ‘\i\ " Vail; 4“ a at;
D
_. .L
\A 2 \f}. £2; a a It: r {‘2
3 3 2 + h
3 ~ '§ V2 :
éjt} “V9.'t3+i" no t1
_ v A __ ~— H 3. 1 Bonus question (3 pts.): What happened to Dr. Anderson at a Padres game? PVC. Cawjbd‘ or (ﬁlm! but” , ...
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 Winter '07
 Anderson
 Physics

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