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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 19:27:33
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
At 3 meters per second, how long does it take to move 21 meters?
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Problem Number 2
An object is initially moving steadily at 7 meters/second.
- At a certain instant it begins speeding up at a constant rate, and
continues to do so until its speed is 15 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 3
The velocity of an observed object increases at a rate of 7 m/s per second. The object
is observed for 6 seconds.
- By how many meters/second does the velocity increase during this time?
- If the velocity at the beginning of the observation is 9 meters/second,
then what is the velocity at the end of the observation?
- What is the average velocity during the observation?
- How far does the object move during observation?
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Problem Number 4
An object is observed for 6 seconds.
- During this time its velocity is seen to increase steadily from 4 meters
per second to 9 meters per second.
- What is ts average velocity and how far does it move while being
observed?
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Problem Number 5
In an elapsed time of 8 seconds, an object moves 56 meters. What is its average
velocity?