Notes are in progress as of 5:00 p.m., and should be complete before 110929.

The test at the end of this document includes the problems discussed in class.

Time and Date Stamps (logged): 10:59:22 09-28-2011 °¯Ÿ´¸Ÿ±±¯¸Ÿ±·Ÿ±¯°°

Physics I Major Quiz

Completely document your work and your reasoning.

You will be graded on your documentation, your reasoning, and the correctness of your conclusions.

Test should be printed using Internet Explorer.  If printed from different browser check to be sure test items have not been cut off.  If items are cut off then print in Landscape Mode (choose File, Print, click on Properties and check the box next to Landscape, etc.). 

Name and Signature of Student _____________________________

Signed by Attendant, with Current Date and Time: ______________________

If picture ID has been matched with student and name as given above, Attendant please sign here:  _________

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 email copy of document to dsmith@vhcc.edu, 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, and in the case of two-choice or limited-choice answers (e.g., true-false or yes-no) will be counted wrong. Undocumented and unjustified answers, if wrong, never get partial credit.  So show your work and explain your reasoning.
• Due to a scanner malfunction and other errors 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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A straight ramp is inclined at three different slopes. The differences in elevation between one end and the other, for the different slopes, are 2.1, 4.2 and 5.8 cm.

• The time required for a cart to coast 54 cm down the ramp, starting from rest, is 1.682856 seconds on the first incline, 1.667749 seconds on the next, and 1.688278 seconds on the last.

How well do these data confirm our suspicion that the acceleration on the ramp is linearly dependent on the slope?

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A ball reaches a ramp of length 50 cm with an unknown initial velocity and accelerates uniformly along the ramp, reaching the other end in 3.8 seconds. Its velocity at the end of the ramp is determined to be 6.31579 cm/s. What is its acceleration on the ramp?

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An object is given an unknown initial velocity up a ramp on which its acceleration is known to have magnitude 12 cm/s^2.  It reaches a maximum distance of 228.16 cm up the ramp before rolling back down. 

• What is its initial velocity? 
• How many seconds after the initial impetus does the object pass a point 7.9 cm up the ramp from its initial position (give all possible answers)?