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PHYSICS
111
EXAM
1
FALL 2009
Please fill
in
your computer answer sheet as follows:
1)
In
the NAME grid, fill
in
your last name, leave one blank
space, then your first name.
2)
Write your nine digit
10
number
in
the IDENTIFICATION
NUMBER section
of
the sheet starting with A.
3)
Write your recitation section number
in
the spaces
K,
L
in
the SPECIAL CODES section. Single digits should be
preceded by a 0 (e.g. section 1 is written as 01).
4)
Fill
in
the circles on the sheet corresponding to the letters
or
numbers
of
your name,
10
and section with a #2 pencil.
In
all problen1s neglect the effects of air friction.
1.
A student travels from Ames to Des Moines at an
average speed
of
65 miles per hour. If the distance is
35 miles how long does her trip take?
(a) 25 min.
@)
32
m~
(c) 40 min. (d) 65 min. (e)
111
min.
2.
A physical quantity is given by C
=
A
I
B.
If A
=
2.17 and
B
=
0.042, what is the correct answer for C?
(a) 51. (b) 51.6 (c) 51.7 ad)
5?)
(e) 52.6
.
3.
A car traveling at 30
mls
is 200 m behind a truck traveling
at 15
m/s.
How long does it take the car to catch the
truck if the speeds remain constant?
(a) 7.0 s (b) 9.0 s (c)
11
s
~
(e) 17 s
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View Full Document4.
A 800
kg
airplane needs to attain a speed
of
50
mls
to
become airborne. What is the minimum average
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 Summer '08
 B
 Physics

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