Phy 151_PracticeTest_1_SU_2011_STU

Phy 151_PracticeTest_1_SU_2011_STU - CPCC 5/25/11 Phy 151...

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CPCC 5/25/11 Phy 151 Practice Test_1 Multiple Choice Identify the choice that best completes the statement or answers the question. ____ 1. In mechanics, physicists use three basic quantities to derive additional quantities. Mass is one of the three quantities. What are the other two? a. length and force b. power and force c. length and time d. force and time ____ 2. The prefixes which are abbreviated p, n, and G represent which of the following? a. 10 -2 , 10 -6 , and 10 15 b. 10 -9 , 10 6 , and 10 10 c. 10 -12 , 10 -9 , and 10 9 d. 10 -15 , 10 -6 , and 10 12 ____ 3. One year is about ____ seconds while one day is exactly ____ seconds. a. 3.16 × 10 7 , 86 400 b. 5.26 × 10 5 , 86 400 c. 3.16 × 10 7 , 8 640 d. 1.04 × 10 6 , 36 000 ____ 4. If a is acceleration, v is velocity, x is position, and t is time, then which equation is not dimensionally correct? a. t = x/v b. a = v 2 /x c. v = a/t d. t 2 = 2x/a ____ 5. A train slowly climbs a 500-m mountain track which is at an angle of 10.0 ° with respect to the horizontal. How much altitude does it gain? a. 86.8 m b. 88.2 m c. 341 m d. 492 m ____ 6. A circle has an area of 2.0 m 2 . A second circle has double the radius of the first. The area of the second circle is ____ times that of the first. a. 0.50 b. 2.0 c. 4.0 d. 8.0 ____ 7. Which of the following is not a vector quantity? a. temperature
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b. velocity c. acceleration d. displacement ____ 8. A cheetah can maintain its maximum speed of 100 km/hr for 30.0 seconds. What minimum distance must a gazelle running 80.0 km/hr be ahead of the cheetah to escape? a. 100 m b. 167 m c. 70.0 m d. 83.0 m ____ 9. Jeff throws a ball straight up. For which situation is the instantaneous velocity zero? a. on the way up b. at the top c. on the way back down d. none of the above ____ 10. A railroad train travels forward along a straight track at 80.0 m/s for 1 000 m and then travels at 50.0 m/s for the next 1 000 m. What is the average velocity? a.
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Phy 151_PracticeTest_1_SU_2011_STU - CPCC 5/25/11 Phy 151...

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