1. Page 49 ppPage 80 ecp #84980 Page 50 Page 81 ecp #105081 Page 52 Top Page 82 ecp #185282 Page 52 pp #3 Page 82 ecp #205282 Page 54 pp Page 82 ecp #215482 Page 56 pp Page 83 ecp #225683 Page 59 pp #1 Page 83 ecp #235983 Page 59 pp #2 Page 84 ecp #245984 Page 60 pp #3 Page 84 ecp #256084 Page 60 pp #4 Page 85 ecp #276085 Page 62 pp Car d-t. v-t, a-t62Car Page 67 pp Page 55 v-t from d-t6755 Page 69 pp69 Table of Contents

2. Chapter 2 Text Graphs Adapted for CVCA Physics by Dick Heckathorn 9 Sept 2K+2

3. Page 49 pp Find the velocity in each section of the following position-time graph. ( - 2.5 0 10 -3.8 0 8.8 ) m/s Press Enter for answers.

4. Page 50 Find velocity for the two segments, then the average velocity.

5. Page 52 Top Find the average velocity for A-B Find the average velocity for B-C

6. Page 52 pp #3 Find the average velocity for each section.

7. Page 54 pp Find the average velocity for 1 st 2.5 s.Find the avg. velocity for 2.5 to 7.5 s. Find v inst for the points A, B, and C. Find v inst when it is equal to zero.

8. 8 m/s Page 56 pp Where is the object at t=7.0 sec? Calculate v avg for the 14 seconds.Find v inst at t = 13 s. -10 m 1.4 m/s

9. Page 59 pp #1 Objects displacement in first 3.0 sec? Displacement from 3.0 to 5.0 sec? Total displacement in 14 seconds? V avg from t = 0 to t = 8.0 sec? 200 m 0 0 17.5 m/s

10. Page 59 pp #2 Find the total displacement. + 150 m

11. Page 60 pp #3 At what time do both cars have the same velocity? At t = 0.4 h, which car is ahead and by how much? At t = 1.0 h, what is the distance separating the two cars? 0.68 hA: 27 km25 km

12. Page 60 pp #4 Determine total displacement for the 1 st 12 sec. 505 m

13. Page 62 pp Determine the acceleration for each of the five unique intervals. A: 2.0 m/s 2 B: 0 C: -2.0 m/s 2 D: 0 E: -1.0 m/s 2

14. Find a avg for interval t = 0 to t = 25 sec and t = 30 to t = 50 sec. Find a inst at t = 25 s and t = 40 s. Page 67 pp 0.57 m/s 2 -0.37 m/s 2 0.70 m/s 2 -0.30 m/s 2 Find a inst at any instant in 1 st 12 sec? 0.50 m/s 2

15. Page 80 ecp #8 Find v avg for the whole trip. Find velocity for each of the 3 intervals. 78 km/h 0 -120 km/h 0

16. Page 81 ecp #10 What sections represent uniform vel.?What sections represent at rest? What sections represent acceleration?What is v avg for t = 0 to t = 5.0 sec and for t = 15 to t = 20 sec? What is v inst for t = 3.0 s, 24 sec, and for t = 8.0 sec. A B E D C 1.4 m/s 0.6 m/s 1.4 m/s -0.63 m/s 0

17. What is a inst at t = 12.5 sec and t = 22 s. Page 82 ecp #18 Where is the velocity uniform? Where is the acceleration uniform? How far does the car travel after 11 sec and after 25 sec? How far does the car travel during the 13 th sec? What is the acceleration in 1 st 5 sec and from t = 11 to 14 sec. 260 m 1300 m B D A C 60 m 6.0 m/s 2 20 m/s 2 -10 m/s 2

18. Page 82 ecp #20 Find the total displacement. 430 m

19. Page 82 ecp #21 At what time is ball at highest point? What is acc when ball is rolling down? What is acc when ball is rolling up? When ball is at rest at top point? How far up the board did the ball go? What is displacement over the 9 s trip? 4.5 s -2.7 m/s 2 1.2 m 0

20. Page 83 ecp #22 At t = 0.40 h, which is ahead? How much? What is v avg of train A for 1 st 36 min? What is a inst of B at t = 0.30 hr? B ahead by 2.4 km 27 km/hr -20 km/h 2 67 km/h 2 What is a avg of A from t = 0.40 to t = 0.70 h?

21. Page 83 ecp #23 What is a inst at t = 3.0 s, 7.0 s, 11.0 s? How far does the car travel in 1 st 5 s, 1 st 9 s, and 1 st 13 s? 0 6.3 m/s 2 -11 m/s 2 100 m230 m320 m

22. Find distance between A and B at t = 5.0 s? -3.3 m/s 2 2.5 m 6.7 m/s 2 Page 84 ecp #24 Find acc of B during final 3 sec. Find v avg of A in 1 st 5 sec. Find a inst of A at t = 7.0 sec. 12 m/s

23. Page 84 ecp #25 Prove that police car overtakes sports car when t = 60 s. Find v avg of police car for 1 st 60 sec. Find distance between cars when t = 30 sec Find acc of sports car at t = 30 s. 30 m/s 450 m -0.33 m/s 2

24. What was happening from t = 300 to t = 400 s? What was v terminal of capsule just before “splashdown”? What was acc of rocket during 1 st two stages? What was a avg from t = 100 s to t = 300 s? 88000 m 5.0 m/s 2 -10 m/s 2 Page 85 ecp #27 At what time did rocket reach d max ? What was the maximum altitude? 200 s 15 m/s 2 -70 m/s

30. Page 55

32. That’s All Folks