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UNIT EXAM REVIEW TEXT REVIEW REVIEWING CONTENT 6. C 1. 2. 3. 4. 5. D A C C A 7. B 8. D 9. B 10. A Understanding Concepts 13. Acceleration = 0 km/s (velocity is constant) 14. Equal in length, opposite in direction 15. Doubled. 16. Speed at a specific instance of time. 17. Straight line 18. 1 meter to the left. Understanding Concepts 19. 6.4 km/h 20. 990 m 21. 2.0 m/s upstream 22. Acceleration is zero 23. Acceleration is not constant 24. Acceleration is due to a change in velocity direction. Critical Thinking 25. It would appear to drop down vertically. 26. Measure the track, time a loop around the track, calculate the speed. 27. Yes. Each measurements produces a velocity of .83 m/s 28. 1400 m/s Math Skills / Concepts in Action 29. Starting from rest, the person walked 15 m at a constant rate for 10 seconds then rested for another 10 sec. 30. 1.5 m/s 32. 600 m/s which is less than the velocity in #28 33. A falling ball has a constant acceleration = 9.8 m/s2. The bouncing ball has a changing acceleration. 34. 5 km/h