Time and Date Stamps (logged): 03:52:05 08-29-2008
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Principles of PHysics I
Principles of Physics (Phy 121) Test_Set_1
Test Generated at Following Date and Time 11-09-200002-15-2001 18:14:48
19:19:05
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Signed by Attendant, with Current Date and Time:
______________________
Name and Signature of Student
_____________________________
Instructions:
- Test is to be taken without reference to text or
outside notes.
- Graphing Calculator is allowed, as is blank paper or
testing center paper.
- No time limit but test is to be taken in one
sitting.
- Please place completed test in Dave Smith's folder,
or mail to Dave Smith, Science and Engineering, Va. Highlands CC, Abingdon, Va. 24212-0828
or fax to 276-739-2590. Test must be returned by individual or agency supervising test. Test is not to be returned to student after it has been taken. Student may, if proctor deems it feasible, make and retain a copy of the test..
Directions for Student:
- Completely document your work.
- Numerical answers should be correct to 3 significant
figures. You may round off given numerical information to a precision consistent
with this standard.
- Undocumented and unjustified answers may be counted
wrong. Undocumented and unjustified answers, if wrong, never get partial credit.
- Due to a scanner malfunction some test items may be
hard to read, incomplete or even illegible. If this is judged by the instructor to
be the case you will not be penalized for these items, but if you complete them and if
they help your grade they will be counted. Therefore it is to your advantage to
attempt to complete them, if necessary sensibly filling in any questionable parts.
- Please write on one side of paper only, and staple
test pages together.
Test Problems:
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Problem Number 1
An object moving at 6 meters/second needs to move 54 meters. How long will it take?
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Problem Number 2
What is the average velocityof an object that moves 35 meters in 7 seconds?
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Problem Number 3
An object is initially moving steadily at 3 meters/second.
- At a certain instant it begins speeding up at a constant rate, and
continues to do so until its speed is 12 meters/second.
- It then continues at this speed.
- If the time from the instant at which it began accelerating to the time
at which it stopped accelerating is 4 seconds, then at what average rate, in
meters/second per second, does the velocity of the object increase?
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Problem Number 4
An object is moving at a constant velocity of 4 m/s before an acceleration phase, and
at another constant velocity after the acceleration phase.
- If during the acceleration phase the velocity changes at a rate of 9 m/s
per second, and if the acceleration phase lasts 5 seconds, then what will be the increase
in velocity?
- What will be the second constant velocity?
- What will be the average velocity?
- How far will the object travel during the acceleration phase?
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Problem Number 5
An object is observed for 6 seconds.
- During this time its velocity is seen to increase steadily from 3 meters
per second to 10 meters per second.
- What is ts average velocity and how far does it move while being
observed?