Label the Following Statements As True Or False. If It Is FALSE, Correct It

Concepts Label the following statements as True or False. If it is FALSE, correct it. 1.Acceleration is a vector quantity.

2. When acceleration is negative for an object slowing down the initial velocity of the object must be positive.

3. Positive acceleration means that an object is speeding up.

4.If a car is making a U-turn at a constant speed the car is not accelerating.

5.An object has an initial velocity of -40 m/s and changes to a velocity of -50 m/s in 1 second is decreasing speed.

6.When velocity is constant an object is not accelerating.

Graphing Graphing: Match the following.

V vs. t Graphs

Graphing

Math: Must show work and record units for full credit. 21. What is the acceleration of a car that maintains a constant velocity of 55 mi/hr for 10.0 seconds? 22. A car speeds up from 4 m/s to 32 m/s in 8 seconds. What is the car’s acceleration? 23. A teenager is texting her mom that she is on the way home while driving 100 m/s when she notices that the light has turned red. She slams on the brakes causing her car to accelerate at a rate of -32 m/s2 for 3 seconds. What will her final velocity be after the 3 seconds interval?

Math: Must show work and record units for full credit. 24. An object that starts at rest travels 67 m while accelerating 1.6 m/s2. How long will it take to reach that distance? 25. Jason was riding his bike when his friends started riding ahead of him. Jason tried to catch up with his friends and has an initial velocity of 2 m/s and accelerates at a rate of 3 m/s. How fast will he be traveling if he accelerates for 7 seconds? 26. An object that starts at rest accelerates -9.8m/s2 for 10 seconds. How far will the object travel in this time? What would the final velocity be?

Concepts 27. If an object has an acceleration of 0 m/s2, then the object is not: a.i.1.a. Movin a.i.1.b. Chan a.i.1.c. Chan g ging ging position velocity

28. RenattaOyle is again found driving her '86 Yugo down Lake Avenue, leaving the following trail of oil drops on the pavement.

29. 30. If her car is moving from right to left, then: a. her velocity is positive and her acceleration is positive. b. her velocity is positive and her acceleration is a negative. c. her velocity is negative and her acceleration is positive. d. her velocity is negative and her acceleration is negative. 31.

32. Which of the following is a correct unit for acceleration? a. mi/hr c. s e. m/s2 b. m d. m/s f. km 33. A fullback is running down the football field in a straight line. He starts at the 0-yard line at 0 seconds. At 1 second, he is on the 10-yard line; at 2 seconds, he is on the 20-yard line; at 3 seconds, he is on the 30-yard line; and at 4 seconds, he is on the 40-yard line. This is evidence that: a. he is accelerating b. he is moving with a constant speed. c. his displacement is zero 34. 35. Student Answer Sheet Name ______36. Concepts 1. _____ : ______2. _____ : ______3. _____ : ______4. _____ : ______5. _____ : ______6. _____ : ______37. 38. Graphing 7. _____ 9. _____ 11. _____ 8. _____ 10. _____ 12. _____ 13. Graphing 14. _____ 15. _____ 16. _____ 17. 18. Graphing 19. _____ 20. _____ 21. _____ 22. _____ 23. _____ 24. Math: Show all work for full credit. 21. G 28. E 29. S 30. S & U

22. G 34. E 35. S 36. S & U

23. G 40. E 41. S 42. S & U

43. Math: Show all work for full credit.

24. G 47. E 48. S 49. S & U

25. G 53. E 54. S 55. S & U

52. 26. G 59. E 60. S 61. S & U

62. 63. Concepts 27. _____ because 28. _____ because 29. _____ because 30. _____ because 64. 65. Notes 66. 67.