First Name: ____________________
Last Name:_____________________
Section: ________
pg
1
February 21, 2007
Physics 207
EXAM 1
Please print your name and section number (or TA’s name) clearly
on all pages.
Show all
your work in the space immediately below each problem.
Your final answer must be placed in the
boxes provided
.
Problems will be graded on reasoning and intermediate steps as well as on the final
answer.
Be sure to include units wherever necessary, and the direction of vectors.
Each problem is
worth 20 points
.
Try to be neat!
Check your answers to see that they have the correct dimensions
(units) and are the right order of magnitude.
You are allowed one sheet of notes (8.5” x 11”, 2 sides),
a calculator, and the constants in this exam booklet.
The exam lasts exactly 90 minutes.
Constants:
Acceleration due to gravity at the earth’s surface:
g
= 9.81 m/s
2
Avogadro’s Number: N
A
= 6.02 x 10
23
molecules/mole
1 metric ton = 1000 kg
Radius of the Earth = 6.4 x 10
6
m
(Do not write below)
SCORE:
Problem 1:
__________
Problem 2:
__________
Problem 3:
__________
Problem 4:
__________
Problem 5:___________
TOTAL:
___________
Don't open the exam until you are instructed to start.
Please
relax and think calmly
.
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Last Name:_____________________
Section: ________
pg
2
PROBLEM 1
Suppose a onedimensional motion of an object of mass
is found to have its acceleration given by
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 Spring '06
 Winnokur
 Physics, Force, Friction, Work, ________ pg, _____________________ Section

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