Name
_______________________________________________________________________
Exam #2
Physics I
Fall 2004
If you would like to get credit for having taken this exam, we need
your name (printed clearly) at the top and section number below.
Your name should be at the top of every
page.
Section #
_____ 1
M/R 810 (Bedrosian)
_____ 2
M/R 1012 (Wetzel)
_____ 3
M/R 122 (Wetzel)
_____ 5
T/F 1012 (Bedrosian)
_____ 6
T/F 122 (Cummings)
_____ 7
T/F 24 (Cummings)
_____ 8
M/R 24 (Schroeder)
_____ 10
M/R 122 (Bedrosian)
You may not
unstaple this exam.
Only work written on the same page as the question will be graded.
Cheating on this exam will result in an F in the course.
1
Questions
Value
Score
Part A
24
B1
16
B2
24
C1
16
C2
20
Total
100
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_______________________________________________________________________
On this exam, please neglect any relativistic and/or quantum mechanical effects.
If you don’t
know what those are, don’t worry, we are neglecting them!
On all multiplechoice questions,
choose the best answer in the context of what we have learned in Physics I.
On graphing and numerical questions, show all work to receive credit.
Part A – Multiple Choice – 24 Points Total (6 at 4 Points Each)
Write your choice(s) on the line to the left of the question number.
______
1.
What principle of physics is expressed by equation 22 on the Formula Sheet?
A.
Conservation of Momentum.
B.
The ImpulseMomentum Theorem.
C.
Conservation of Mechanical Energy.
D.
The WorkKinetic Energy Theorem.
______
2.
Which of the following conditions are necessary to solve a problem correctly using
equations 45a and 45b on the Formula Sheet?
Put all that apply or “0” if none.
A.
Two objects collide.
B.
All velocities are in one dimension only (+ or –).
C.
Total forces external to the system sum to zero or are negligible during the event.
D.
The total kinetic energy of the system before the event is equal to the total kinetic
energy of the system after the event.
______
3.
Two drivers with the same mass have a drag race in two electric cars, A and B.
Both cars experience the same net force as a function of
time
as shown in the graph
below and both start from rest at t = 0.
The mass of car A is greater than the mass
of car B.
Which car has greater
kinetic energy
at t = 20 seconds?
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 Spring '07
 Schroeder
 Physics, Angular Momentum, Force, Kinetic Energy, Momentum, B. C.

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