# pex1sm08 - August 4, 2008 PHY 2053 Discussion Practice Exam...

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August 4, 2008 PHY 2053 Discussion Practice Exam 1 (Chapter 1-5) 1. Which expression is dimensionally consistent with an expression that would yield a value for time -1 ? (Dimensional Analysis) a. v/x b. v 2 /x c. x/t d. v 2 t 2. A cheetah can run at approximately 100 km/hr and a gazelle at 80 km/hr. If both animals are running at full speed, with the gazelle 70 m ahead, how long before the cheetah catches its prey? (1D motion w/ constant velocity) a. 12.6 s b. 25.2 s c. 6.30 s d. 10.7 s 3. A bird, accelerating from rest at a constant rate, experiences a displacement of 28 m in 11 s. What is the final velocity after 11 s? (1D motion w/ constant acceleration) a. 1.8 m/s b. 3.2 m/s c. 5.1 m/s d. zero 4. At the top of a cliff 100 m high, Raoul throw a rock upward with velocity 15 m/s. How much later should he drop a second rock from rest so both rocks arrive simultaneously at the bottom of the cliff? (Free fall in 1D) a. 5.05 s b. 3.76 s c. 2.67 s d. 1.78 s 5. A taxicab moves five blocks due north, five blocks due east, and another two blocks due north.

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## This note was uploaded on 12/13/2011 for the course PHY 2053 taught by Professor Buchler during the Fall '06 term at University of Florida.

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pex1sm08 - August 4, 2008 PHY 2053 Discussion Practice Exam...

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