ExamsF98

# ExamsF98 - PHYSICS 103 First Quiz 22 Sep 1998 Please put...

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PHYSICS 103 First Quiz 22 Sep 1998 Please put the letter corresponding to the best answer in the blanks at the left. Each question counts two points. 1. I am very happy that the first question is an easy one to get me off to a good start in this course. The subject matter of this course is a) physics. b) psychiatry. c) philosophy. d) physical education. 2. Bode's law giving the sizes of the orbits of the planets is no longer considered to be a physical law because a) it did not test for the data known at the time it was proposed. b) it was not based on physical principles. c) it did not make any predictions that could be tested. d) it was actually proposed by the Titus of Wittenburg. 3. Which of the following is not a valid criterion for the acceptance of a physical law or theory? a) prestige of the scientist proposing it. b) agreement with past data. c) how fundamental and general it is. d) ability to predict future results. 4. How many millimeters are there in one kilometer? a) 1,000,000 b) 100,000 c) 1000 d) 100 e) 10 5. If a league is equal to 3 miles, how many miles are there in "20,000 Leagues Under the Sea?" a) 6,667 b) 19,997 c) 20,003 d) 60,000 6. A Buick travels from milepost 303 to milepost 353 between 1:00 and 2:00 pm. A Ford travels from milepost 100 to milepost 140 during the same time. Which car was traveling faster at 1:30 pm? a. Buick b. Ford c. They were traveling at the same speed. d. There is not enough information to be able to say. 7. The average speed of an object is defined to be the a. distance it travels divided by the time it takes. b. distance it travels multiplied by the time it takes. c. change in its velocity divided by the time this change takes. d. change in its velocity multiplied by the time this change takes. 8. A yellow car takes ten minutes to go from milepost 50 to milepost 58. A red car takes ten minutes to go from milepost 31 to milepost 41. Which car has the lower average speed? a. the yellow one b. the red one c. The average speeds are the same. d. Not enough information is given to be able to say.

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First Quiz PHYSICS 103 22 Sep 1998 9. If a marathoner can run with an average speed of 10 mph, how far could she run in 2 hours? a. 5 miles b. 10 miles c. 12 miles d. 20 miles 10. Which of the following could be a velocity? a. 5 meters west b. 5 meters per second c. 5 meters per second west d. 5 meters per second per second 11. The average acceleration of an object is defined to be the a. distance it travels divided by the time it takes. b. change in its velocity divided by the time this change takes. c. change in its speed divided by the time this change takes. d. average of the accelerations during the two halves of the trip. 12. If a car changes speed from 50 mph to 58 mph in two minutes, its average acceleration is a. 4 miles/hour b. 54 miles/hour/minute c. 8 miles/hour/minute d. 4 miles/hour/minute 13. Which of the following strobe diagrams does NOT correspond to a situation where the ball is accelerating?
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ExamsF98 - PHYSICS 103 First Quiz 22 Sep 1998 Please put...

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