1. SMDEP Physics Instructor: Dr. Ken Rines TA: Andrew Cahoon

2. Ch. 2, #9(a) 1.13.4 m/s 2.-13.4 m/s 3.0 4.10.1 m/s 5.-10.1 m/s

3. Ch. 2, #9(b) 1.+3.36 m/s 2.-3.36 m/s 3.0 4.+13.4 m/s 5.-13.4 m/s

4. Ch. 2, #18: How long does it take? How far does car go? 1.0.012 h, 1.1 km 2.0.11 h, 9.9 km 3.0.11 h, -9.9 km 4.23 s, 0.58 km

5. Ch. 2, #18: How long does it take? How far does car go? 1.0.012 h, 1.1 km 2.0.11 h, 9.9 km 3.0.11 h, -9.9 km 4.23 s, 0.58 km

6. Ch 2, #32 1.9.8 m/s 2 2.276.6 m/s 2 3.276.6 m/s 4.2.76 m/s 2 5.98 m/s 2

7. Ch 2, #79 How long for 0.8 km stops ? 1.49 min 2.32 min 3.31 min 4.52 min 5.Too hard

8. Ch 2, #79 How long for 3.0 km stops ? 1.49 min 2.32 min 3.31 min 4.52 min 5.Too hard

9. Can an object have a=0 and v  0 simultaneously? 1.Yes 2.No

10. Can an object have v=0 and a  0 simultaneously? 1.Yes 2.No

11. Q. An object goes from one point in space to another. After it arrives at its destination, its displacement is: 1.Either greater than or equal to 2.Always equal to 3.Either smaller than or equal to 4.Either smaller or larger than …the distance it traveled

12. Which of the following is a reasonable description of the motion in the following graph? 1.Positive position, positive velocity, and positive acceleration at all times 2.Positive pos., positive v, and negative a at all times 3.Positive pos., negative a at all times, but v changes sign 4.Negative a at all times, but pos. and v change sign 5.Pos., v, a all change sign

13. 2468101214 20 40 60  20  40 position (m) time (s)

14. Which of the following is a reasonable description of the motion in the following graph? 1.Positive position, positive velocity, and positive acceleration at all times 2.Positive pos., positive v, and negative a at all times 3.Positive pos., negative a at all times, but v changes sign 4.Negative a at all times, but pos. and v change sign 5.Pos., v, a all change sign