2. 3rd Quarter CRT Review - 1 8.08.19.09.110.0?? 25 20 15 10 5 25 20 15 10 5 25 20 15 10 5 25 20 15 10 5 25 20 15 10 5 25 20 15 10 5

3. ASCOS #8.0 – 5 points Question According to Newton’s 2 nd law, if there is an increase in force, what will happen to the acceleration of the object?

4. ASCOS #8.0– 10 points Question According to Newton’s first law of motion, what will a moving object that is not acted on by an unbalanced force do?

5. ASCOS #8.0– 15 points Question According to Newton’s Laws, when the brakes are suddenly applied to a moving vehicle, what causes a person to continue to move forward in his seat?

6. ASCOS #8.0– 20 points Question According to Newton’s third law of motion, when a force is exerted on an object what does a second force produce?

7. ASCOS #8.0– 25 points Question If an astronaut uses a jet of nitrogen to maneuver in space, what law is illustrated as the nitrogen is expelled?

8. ASCOS #8.1– 5 points Question A student kicks a 0.7 kg ball. She then kicks a 70 kg rock with the same force. What can be said about the acceleration of the ball as compared to the rock?

9. ASCOS #8.1– 10 points Question All objects accelerate toward the Earth at a rate of 9.8 m/s/s. What is the effect on velocity for every second that an object falls downward?

10. ASCOS #8.1– 15 points Question Due to projectile motion, where should Mr. Smith aim when shooting at a target?

11. ASCOS #8.1– 20 points Question Given the formula (F=ma), how much force is needed to accelerate a 62 kg rider and her 300 kg motor scooter at 6 m/s/s.

12. ASCOS #8.1– 25 points Question Given the formula, (acceleration = final velocity – starting velocity divided by time), what is a plane’s acceleration from Mobile to Saraland if the plane passes over Mobile with a velocity of 8,000 m/s north and then passes over Saraland at a velocity of 10,000 m/s north, 40s later?

13. ASCOS #9.0– 5 points Question A construction worker is given four hammers of different lengths. Which hammer would have the greatest mechanical advantage?

14. ASCOS #9.0– 10 points Question How would you describe the input force and distance of a screw?

15. ASCOS #9.0– 15 points Question A student is given a 10 kg rock, four boards, and a fulcrum to make a lever. Which board will have the greatest mechanical advantage if the fulcrum is placed in the same place relative to the load?

16. ASCOS #9.0– 20 points Question A student wants to lift a 20 kg box. She has four pulleys and a 18 m rope. Which arrangement would have the greatest mechanical advantage?

17. ASCOS #9.0– 25 points Question To open a bottle, Mary applied a force of 90 N to the bottle opener. The bottle opener applies a force of 225 N to the bottle cap. What is the mechanical advantage of the bottle opener?

18. ASCOS #9.1– 5 points Question A 546 g fish displaces 420 cm 3 of water. What is the density of the fish? (D=m/v)

19. ASCOS #9.1– 10 points Question How do gases and air flow?

20. ASCOS #9.1– 15 points Question Air is made up of gases, but it can be called a fluid. Why is an airplane able to fly within this fluid?

21. ASCOS #9.1– 20 points Question An ice cube is dropped into a glass of water that is filled to the top. The ice cube causes some of the water to overflow. What is true of the weight of the displaced water?

22. ASCOS #9.1– 25 points Question In what direction do gases exert pressure?

23. ASCOS #10.0– 5 points Question A ball falls from a height of 6 meters in the absence of air resistance. When does the ball have the greatest kinetic energy and the least potential energy?

24. ASCOS #10.0– 10 points Question A roller coaster travels up and down a large hill and then a small hill. At what point on the hills does the roller coaster have the greatest kinetic energy?

25. ASCOS #10.0– 15 points Question A student is observing traffic and sees four vehicles: a large truck traveling 60 m/s, a large truck traveling 30 m/s, a small car traveling 40 m/s, and a small car traveling 25 m/s. Which vehicle has the MOST kinetic energy?

26. ASCOS #10.0– 20 points Question A vehicle is traveling at 25 Km per hour. It increases its speed to 60 km per hour. What happens to its kinetic and potential energy?

27. ASCOS #10.0– 25 points Question By increasing the speed of an object what happens to its potential energy?

28. ASCOS #8.0– 5 points Question What does Newton’s second law of motion state about an object’s acceleration?

29. ASCOS #8.1– 10 points Question Given the formula, (average speed = total distance divided by total time), what is the bird’s average speed if it flies 250 m for 25 s? (s=d/t)

30. ASCOS #9.0– 15 points Question What is the term for a slanted surface used to raise an object?

31. ASCOS #9.1– 20 points Question The reason you blow round bubbles and not square ones is explained by what principle?

32. ASCOS #10.0– 25 points Question Two objects have the same mass. One object is traveling vertically 25 km/s. The other object is on the floor and is traveling horizontally at a speed of 25 km/s. Which one has the greatest kinetic energy and least potential energy?

33. ASCOS #8.0 Topic Identify Newton’s Three Laws of Motion.

34. ASCOS #8.1 Topic Identify and calculate the elements of motion.

35. ASCOS #9.0 Topic Describe how mechanical advantages of simple machines reduce the amount of force needed for work.

36. ASCOS #9.1 Topic Describe the effect of force on pressure in fluids.

37. ASCOS #10.0 Topic Differentiate between kinetic and potential energy.

38. ASCOS #?? Topic Hodge Podge – a mixture of questions from all objectives.

39. ASCOS # 8.0 Answer The acceleration will increase.

40. ASCOS # 8.0 Answer It will remain in motion.

41. ASCOS # 8.0 Answer inertia

42. ASCOS # 8.0 Answer A force equal in size and opposite in direction.

43. ASCOS # 8.0 Answer Newton’s third law

44. ASCOS # 8.1 Answer The ball will have a greater acceleration than the rock.

45. ASCOS # 8.1 Answer It increases by 9.8 m/s until it reaches terminal velocity.

46. ASCOS # 8.1 Answer Above the bull’s eye.

47. ASCOS # 8.1 Answer 2172 N [F=ma = (62kg + 300kg)(6m/s/s) = (362 kg)(6m/s/s) = 2172 N]

48. ASCOS # 8.1 Answer 50 m/s/s north [V f – V s /t = 10,000 m/s – 8,000 m/s ÷ 40s = 2,000 m/s ÷ 40s = 50 m/s/s.]

49. ASCOS # 9.0 Answer The longest hammer.

50. ASCOS # 9.0 Answer Small input force over a long distance.

51. ASCOS # 9.0 Answer The longest board

52. ASCOS # 9.0 Answer The rope with 4 pulleys

53. ASCOS # 9.0 Answer 2.5 [Mechanical Advantage = Output force/Input force = 225 N/ 90N = 2.5]

54. ASCOS # 9.1 Answer 1.3 g/cm 3 [D=m/v = 546 g/420 cm 3 = 1.3 g/cm 3 ]

55. ASCOS # 9.1 Answer Always from areas of high pressure to low pressure

56. ASCOS # 9.1 Answer Because of Bernoulli’s principle (difference in speed of air) and decrease of pressure which provides lift.

57. ASCOS # 9.1 Answer It is the same as the weight of the ice cube

58. ASCOS # 9.1 Answer Evenly in all directions.

59. ASCOS # 10.0 Answer Just before it hits the ground.

60. ASCOS # 10.0 Answer The bottom of the biggest hill.

61. ASCOS # 10.0 Answer The large truck traveling at 60 m/s.

62. ASCOS # 10.0 Answer Kinetic energy is increased and potential energy is not affected.

63. ASCOS # 10.0 Answer It does not affect potential energy.

64. ASCOS # 8.0 Answer It increases as its mass decreases and as the force acting on it increases.

65. ASCOS # 8.1 Answer 10 m/s [s=d/t = 250m/25s = 10 m/s]

66. ASCOS # 9.0 Answer Inclined plane

67. ASCOS # 9.1 Answer Pascal’s principle

68. ASCOS # 10.0 Answer They have the same kinetic energy but the one traveling horizontally on the floor has the least potential energy.