Unformatted text preview: 77777 77777 Instructor(s): Muttalib/Seiberling
PHYSICS DEPARTMENT PHY 2053 Final Exam December 12, 2005
Name (print, last ﬁrst): Signature: On my honor, I have neither given nor received unauthorized aid on this examination. YOUR TEST NUMBER IS THE 5-DIGIT NUMBER AT THE TOP OF EACH PAGE. (1) Code your test number on your answer sheet (use lines 76—80 on the answer sheet for the 5-digit
number). Code your name on your answer sheet. DARKEN CIRCLES COMPLETELY. Code your UFID
number on your answer sheet. One point will be deducted for incorrectly coded exam numbers. (2) Print your name on this sheet and sign it also. (3) Do all scratch work anywhere on this exam that you like. Circle your answers on the test form. At the end of
the test, this exam printout is to be turned in. No credit will be given without both answer sheet and printout with
scratch work most questions demand. (4) Blacken the circle of your intended answer completely, using a #2 pencil or blue or black ink. Do not
make any stray marks or some answers may be counted as incorrect. (5) The answers are rounded off. Choose the closest to exact. There is no penalty for guessing. (6) Hand in the answer sheet separately. Useful numbers: 9 = 9.80 m/s2 G = 6.67 x 10—11 N mz/kg2 1., Consider the following ﬁve graphs (note the axes carefully). Which of these represent(s) motion at constant speed?
Here, .7: is the position, v is the speed, a is the acceleration, and t is time. IX VZ "Z V: .: l
t t t t t
A B C D E (1) A and D only (2) D only (3) D and E only (4) A, B, and C only (5) A and B only \ 2. Two bodies are falling with negligible air resistance, side by side, above a horizontal plane. If one of the bodies is given
an additional horizontal acceleration during its descent, it: (1) strikes the plane at the same time as the other body. (2) has the vertical component of its velocity altered. (3) has the vertical component of its acceleration altered. (4) follows a hyperbolic path. (5) follows a straight line path along the resultant acceleration vector. 3. A particle moves at constant speed in a circular path. The instantaneous velocity and instantaneous acceleration
vectors are: (1) perpendicular to each other. (2) both tangent on the ciruclar path. (3) both perpendicular to the circular path.
(4) opposite to each other. (5) none of these 4. A lead block is suspended from your hand by a string. The reaction force to the force of gravity on the block is the
force exerted by the: (1) block on the earth. (2) string on the block. (3) block on the string. (4) string on the hand. (5) hand on the string. ...
View Full Document
- Spring '06