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Instructor: Ihas/Biswas PHYSICS DEPARTMENT
PHY 2053 Exam 1, 120 minutes October 8, 2008 Name (print. last ﬁrst): Signature: On my honor, I have neither given nor received unauthorized aid on this examination. DIRECTIONS (1) Code your test number (THE 5DIGIT NUMBER AT THE TOP OF EACH PAGE) on your answer
sheet using lines 76—80. Write your test number down and take it with you. Code your name on your answer
sheet. Code your UFID number on your answer sheet. 2 Print your name on this sheet and sign it also. 3 You may do scratch work anywhere on this exam. 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. (4) Fill in the circles of your intended answers completely on the answer sheet, using a #2 pencil or blue or
black ink. Do not make any stray marks or some answers may be counted as incorrect. E5) The answers are rounded off. Choose the closest to exact. There is no penalty for guessing. 6 Hand in the answer sheet separately, showing your UFID. M Useful information: 9 = 9.80 m/s2 Neglect air resistance. All ropes, strings, and pulleys are massless. 1. A daredevil decides to jump a canyon. The walls of the canyon are equally high and 10.0 m apart. He takes off by
driving a motorcycle up a short ramp sloped at an angle of 22°. What minimum speed (in m/s) must he have in order
to clear the canyon? (1) 11.9 (2) 17.1 (3) 15.5 (4) 9.80 (5) 22.0 2. A daredevil decides to jump a canyon. The walls of the canyon are equally high and 15.0 m apart. He takes off by
driving a motorcycle up a short ramp sloped at an angle of 15°. What minimum speed (in m/s) must he have in order
to clear the canyon? (1) 11.9 (2) 17.1 (3) 15.5 (4) 9.80 (5) 22.0 3. A daredevil decides to jump a canyon. The walls of the canyon are equally high and 10.0 m apart. He takes off by driving a motorcycle up a short ramp sloped at an angle of 12°. What minimum speed (in m/s) must he have in order
to clear the canyon? (1) 11.9 (2) 17.1 (3) 15.5 (4) 9.80 (5) 22.0 4. Runner A is initially 7.00 mi west of a ﬂagpole and is running with a constant velocity of 7.00 mi/ h due east. Runner B
is initially 7.00 mi east of the ﬂagpole and is running with a constant velocity of 4.00 mi / h due west. How far (in miles)
are the runners from the ﬂagpole when they meet? (1) 1.91 (2) 0.545 (3) 5.00 (4) 7.00 (5) 9.51 5. Runner A is initially 5.00 mi west of a ﬂagpole and is running with a constant velocity of 7.00 mi/ h due east. Runner B
is initially 2.00 mi east of the ﬂagpole and is running with a constant velocity of 4.00 mi/ h due west. How far (in miles)
are the runners from the ﬂagpole when they meet? (1) 1.91 (2) 0.545 * (3) 5.00 (4) 7.00 (5) 9.51 6. Runner A is initially 9.00 mi west of a ﬂagpole and is running with a constant velocity of 2.00 mi/ h due east. Runner B
is initially 1.00 mi east of the ﬂagpole and is running with a constant velocity of 3.00 mi / h due west. How far (in miles)
are the runners from the ﬂagpole when they meet? (1) 1.91 (2) 0.545 (3) 5.00 (4) 7.00 (5) 9.51 ...
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 Spring '06
 Buchler

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