ame: ________________________ Class: ___________________ Date: __________ Quiz 1--PHYS 101-3T--Fall 2013 Multiple Choice Identify the choice that best completes the statement or answers the question. 1. Which of these is the current standard for the kilogram? 4. Consider the triangle in the previous question. What is the angle θ? a. the mass of 3x108 light photons b. 1 billionth the mass of the earth c. the mass of a silicon atom d. the mass of a particular cylinder 2. What must the units of Q be so this equation is dimensionally correct? a. 40° b. 10° c. 60° d. 90° e. 50° 5. In square millimeters, estimate the area of this box. xt = Q v a a. meters⋅seconds b. meters c. meters⋅seconds2 d. 1/seconds 3. Consider this triangle. What is the side “x?” a. 400 mm2 b. 4,000 mm2 c. 4 mm2 d. 40 mm2 e. 0.4 mm2 6. Which of these is the answer considering appropriate use of significant figures: 4.52 + 2.5 0.50 × 14 a. b. c. d. a. 1.000 b. 1.00 c. 1.0 d. 1 7. When throwing a ball straight up, which of the following is true about its velocity v and its acceleration a at the highest point in its path? a. both v=0 and a=0 b. v=0, a≠0 c. both v≠0 and a≠0 d. v≠0, a=0 9.0 m 1.0 m 3.0 m 2.0 m 1 ame: ________________________ 8. Consider this position versus time graph. What is the average velocity from 20 to 40 s? a. b. 1 m/s -3 m/s c. d. 2 m/s 4 m/s 12. Consider this graph. What is the sign of the acceleration? 9. Consider the above graph. Where is the speed of the object greatest? a. t=45 s b. t=55 s c. t=38 s d. t=10 s 10. A man jumps from a space capsule towards earth. What is his speed after 10 s? a. not enough information to tell b. negative c. zero d. positive 13. This graph shows the velocity versus time graph for 3 separate cars: A, B, and C. Which of these statements is false? a. 1000 m/s b. 1 m/s c. 100 m/s d. 10 m/s 11. For the man in the previous problem, how far does he travel in 10 s? a. b. c. d. e. 500 m 100 m 800 m 50 m 200 m a. b. c. d. 2 Car A initially has a larger acceleration than Car B Cars A, B, and C all travel the same distance. Car C finishes with a larger acceleration than Car A. Cars A, B, and C all reach the same final velocity. ID: A Quiz 1--PHYS 101-3T--Fall 2013 Answer Section MULTIPLE CHOICE 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. ANS: ANS: ANS: ANS: ANS: ANS: ANS: ANS: ANS: ANS: ANS: ANS: ANS: D B C E A C B C A C A D B PTS: PTS: PTS: PTS: PTS: PTS: PTS: PTS: PTS: PTS: PTS: PTS: PTS: 1 1 1 1 1 1 1 1 1 1 1 1 1 1