A) I B) II C) III D) IV E) V Ans: E Section: 2-6 Disabled: Yes Answer Locks: LOCK A, LOCK B, LOCK C, LOCK D, LOCK E 20. Over a short interval near time t = 0 the coordinate of an automobile in meters is given by x(t) = 27t – 4.0t3, where t is in seconds. At the end of 1.0 s the acceleration of the auto is: A) 27 m/s2 B) 4.0 m/s2 C) –4.0 m/s2 D) –12 m/s2 E) –24 m/s2 Ans: E Section: 2-6 21. Which of the following five coordinate versus time graphs represents the motion of an object whose speed is increasing? A) I B) II C) III D) IV E) V Ans: A Section: 2-6 Disabled: Yes Answer Locks: LOCK A, LOCK B, LOCK C, LOCK D, LOCK E
A) I B) II C) III D) IV E) V Ans: E Section: 2-6 Disabled: Yes Answer Locks: LOCK A, LOCK B, LOCK C, LOCK D, LOCK E 20. Over a short interval near time t = 0 the coordinate of an automobile in meters is given by x(t) = 27t – 4.0t3, where t is in seconds. At the end of 1.0 s the acceleration of the auto is: A) 27 m/s2 B) 4.0 m/s2 C) –4.0 m/s2 D) –12 m/s2 E) –24 m/s2 Ans: E Section: 2-6 21. Which of the following five coordinate versus time graphs represents the motion of an object whose speed is increasing? A) I B) II C) III D) IV E) V Ans: A Section: 2-6 Disabled: Yes Answer Locks: LOCK A, LOCK B, LOCK C, LOCK D, LOCK E
Principles%20of%20Physics%20Exam.docx