Regular Physics 2nd Semester Final Review

Regular Physics 2nd Semester Final Review

1. Which circuit shows the correct use of meters? (A–ammeter,V–voltmeter)

A. B.

C. D.

2. As more resistors are added in parallel, the total resistance of a circuit

A. decreases B. increases C. remains the same

3. Base your answer(s) to the following question(s) on the diagram given.

What is the total resistance of the circuit?

A. 0.500 Ω B. 2.00 Ω C. 3.00 Ω D. 4.00 Ω

4. Three ammeters are placed in a circuit as shown.

If A1 reads 5.0 amperes and A2 reads 2.0 amperes, what does A3 read?

A. 1.0 A B. 2.0 A C. 3.0 A D. 7.0 A

5. An electric circuit contains an operating heating element and a lit lamp.Which statement best explains why the lamp remains lit when theheating element is removed from the circuit?

A. The lamp has less resistance than the heating element.

B. The lamp has more resistance than the heating element.

C. The lamp and heating element were connected in series.

D. The lamp and heating element were connected in parallel.

6. Which circuit shown here could be used to determine the total currentand potential difference of a parallel circuit?

A.

B.

C.

D.

7. In the accompanying circuit diagram, what are the correct readings ofvoltmeters V1 and V2?

A. V1 reads 2.0 V and V2 reads 4.0 V

B. V1 reads 4.0 V and V2 reads 2.0 V

C. V1 reads 3.0 V and V2 reads 3.0 V

D. V1 reads 6.0 V and V2 reads 6.0 V

page 1

8. In which circuit represented below are meters properly connected tomeasure the current through resistor R1 and the potential differenceacross resistor R2?

A. B.

C. D.

9. Which of the following is NOT a short circuit when switch S is closed?

A.

B.

C.

D.

10. An electric circuit contains a variable resistor connected to a sourceof constant potential difference. Which graph best represents therelationship between current and resistance in this circuit?

A. B.

C. D.

11. Which pair of graphs represent the same motion?

A.

B.

C.

D.

page 2 Regular Physics 2nd Semester Final Review

12. Base your answer(s) to the following question(s) on the informationbelow.

In a drill during basketball practice, a player runs the lengthof the 30-meter court and back. The player does this three timesin 60 seconds.

The average speed of the player during the drill is

A. 0.0 m/s B. 0.50 m/s C. 3.0 m/s D. 30. m/s

13. A cart starting from rest travels a distance of 3.6 meters in 1.8 seconds.The average speed of the cart is

A. 0.20 m/s B. 2.0 m/s C. 0.50 m/s D. 5.0 m/s

14. An observer recorded the following data for the motion of a carundergoing constant acceleration.

Time (s) Speed (m/s)

3.0 4.0

5.0 7.0

6.0 8.5

What was the magnitude of the acceleration of the car?

A. 1.3 m/s2 B. 2.0 m/s2 C. 1.5 m/s2 D. 4.5 m/s2

15. The graph below represents the relationship between speed and time foran object moving along a straight line.

What is the total distance traveled by the object during the first4 seconds?

A. 5 m B. 20 m C. 40 m D. 80 m

16. A roller coaster, traveling with an initial speed of 15 meters persecond, decelerates uniformly at −7.0 meters per second2 to a fullstop. Approximately how far does the roller coaster travel during itsdeceleration?

A. 1.0 m B. 2.0 m C. 16 m D. 32 m

17. An airplane originally at rest on a runway accelerates uniformly at6.0 meters per second2 for 12 seconds. During this 12-second interval,the airplane travels a distance of approximately

A. 72 m B. 220 m C. 430 m D. 860 m

18. A 2.0-kilogram mass weighs 10. newtons on planet X. The accelerationdue to gravity on planet X is approximately

A. 0.20 m/s2 B. 5.0 m/s2 C. 9.8 m/s2 D. 20. m/s2

19. A runner starts from rest and accelerates uniformly to a speed of8.0 meters per second in 4.0 seconds. The magnitude of the accelerationof the runner is

A. 0.50 m/s2 B. 2.0 m/s2 C. 9.8 m/s2 D. 32 m/s2

20. Crash Test Smarties

Modern automobiles are tested for collision safety using models ofhuman beings often called crash test dummies. These “dummies” areactually quite “smart.” They are often fitted with sensor devices that canrecord their motion and force of impact during an automobile collision.

In the diagrams shown below, the length of the arrow indicates therelative amount of force. Which of these diagrams correctly shows theamount and direction of the forces on the wall and the car during thecollision?

A.

B.

C.

D.


21. Use the drawing below to answer the following question.

1 kg 10 kg 20 kg 50 kg

All of the boxes shown above can slide easily. Which box will movefarthest if each is struck with the same amount of force?

A. the 1-kg box B. the 10-kg box

C. the 20-kg box D. the 50-kg box

22. Base your answer(s) to the following question(s) on the information anddiagram below.

A 1200-kilogram car traveling at a constant speed of9.0 meters per second turns at an intersection. The car follows ahorizontal circular path with a radius of 25 meters to point P.

At point P, the car hits an area of ice and loses all frictional force onits tires. Which path does the car follow on the ice?

A. A B. B C. C D. D

23. Use the diagram below to answer the question.

A marble was rolled down the ramp as shown in the diagram above.What path will the marble take after it rolls off the ramp?

A.

B.

C.

D.


24. The driver of a pickup truck traveling north at 20 m/s suddenly stops.

In which direction will a suitcase lying in the center of the frictionlesstruck bed move?

A. I B. II C. III D. IV

25. A teacher leaves a coffee mug on top of a car, as shown in the diagrambelow.

The teacher drives the car in a straight line and then stops suddenly.What happens to the coffee mug when the car stops?

A. The mug moves forward.

B. The mug moves backward.

C. The mug moves side to side.

D. The mug stays in the same position.

26.

Which statement accurately describes the interaction between a foot andsidewalk as a person moves forward along the sidewalk in the forwarddirection?

A. The foot pushes forward on the sidewalk; the sidewalk does notpush forward on the foot.

B. The foot pushes forward on the sidewalk; the sidewalk pushesforward on the foot.

C. The foot pushes backward on the sidewalk; the sidewalk pushesforward on the foot.

D. The foot pushes backward on the sidewalk; the sidewalk pushesbackward on the foot.

27. A man standing on a scale in an elevator notices that the scale reads30 newtons greater than his normal weight. Which type of movementof the elevator could cause this greater-than-normal reading?

A. accelerating upward

B. accelerating downward

C. moving upward at constant speed

D. moving downward at constant speed

28. The accompanying diagram shows a horizontal 8.0-newton force appliedto a 4.0-kilogram block on a frictionless table.

What is the magnitude of the block’s acceleration?

A. 0.50 m/s2 B. 2.0 m/s2 C. 9.8 m/s2 D. 32 m/s2

29. A hot air balloon exerts a force of 1200 N while lifting a load of 800 N.Which free-body force diagram depicts the forces involved?

A. B. C. D.


30. Two students are pushing a cart, as shown below.

The cart will move as if it were acted on by a single force with amagnitude of

A. 50 N. B. 150 N. C. 200 N. D. 350 N.

31. The diagram below shows a horizontal 12-newton force being appliedto two blocks, A and B, initially at rest on a horizontal, frictionlesssurface. Block A has a mass of 1.0 kilogram and block B has a mass2.0 kilograms.

The magnitude of the acceleration of block B is

A. 6.0 m/s2 B. 2.0 m/s2 C. 3.0 m/s2 D. 4.0 m/s2

32. Two forces act on the 2 kg box shown below.

A 4 N force acts to the right and a 6 N force acts to the left. What isthe net force acting on the box?

A. 10 N to the right B. 10 N to the left

C. 2 N to the right D. 2 N to the left

33. A 2000 kg car is pulling a 1000 kg trailer. The car’s engine exerts a6000 N force to move the car and the trailer. In addition, the car andthe trailer each experience a 1000 N frictional force as they are beingpulled, as represented below.

What is the magnitude of the net force on this system?

A. 2000 N B. 4000 N C. 5000 N D. 8000 N

34. This diagram shows an object being pushed along a frictionless surface.The object accelerates at 2 m/s/s.

What force was applied to the object?

A. 1 N B. 1.5 N C. 5 N D. 6 N

35. How much force is needed to accelerate a 500.0-kg car at a rate of4.000 m/s/s?

A. 125.0 N B. 250.0 N C. 2,000. N D. 4,000. N

36. This diagram shows three horizontal forces acting on an object.

Neglecting friction, what is the magnitude of force, F, if the objectremains at rest?

A. 6 N B. 8 N C. 14 N D. 22 N


37. A force acting on an object that is free to move will cause a change inthe speed of the object. Which graph shows how the speed of an objectwould change if a single constant force were applied to the object overa period of time?

A.

B.

C.

D.

38. The diagram below shows the forces acting on a rock.

The weight of the rock is 76 N. An upward force of 106 N is exerted onthe rock. What is the net force acting on the rock?

A. 30 N upward B. 76 N downward

C. 106 N upward D. 182 N downward

39. If each horse is pulling with the same force, in which direction will therock move?

A. north B. east C. south D. west


40. A ball is traveling through the air in the direction of the arrow as shownin the diagram below.

In which direction does the force of air friction push on the ball?

A. B.

C. D.

41. A 0.40-kg flashlight is constructed to withstand a specific force ofimpact that protects the bulb. A standard 0.10 second is used astime-of-impact in calculating a flashlight’s specifications.

What is the impact force on the 0.40-kg flashlight if it falls 2.5 metersand hits a concrete floor at 7.0 m/s, stopping in 0.10 seconds?

A. 1.0 N B. 2.8 N C. 28 N D. 98 N

42. The path of a kicked football is shown in the diagram. The dashed lineshows the path of the ball if the air resistance is neglected. Point X isa point along the path.

Which arrow points in the direction of the acceleration?

A. I B. II C. III D. IV

43. In the diagrams below, g is the force of gravity, r is the force of theramp acting on the car and f is the force of friction.

Which diagram shows the directions of the forces acting on a car as ittravels down the ramp?

A.

B.

C.

D.

44. A car moves with a constant speed in a clockwise direction around acircular path of radius r, as represented in the diagram below.

When the car is in the position shown, its acceleration is directedtoward the

A. north B. west C. south D. east


45. The diagram below shows the top view of a student swinging a ballabove her head.

This ball continues to move in a circular path because

A. gravity pulls the ball downward.

B. some air resistance is present.

C. the string applies a force against the ball.

D. the weight of the string is the same weight as the ball.

46. When electric current flows through the metal filament of a light bulb,electrical energy is converted to

A. heat energy only. B. heat and light energy.

C. light and motion energy. D. light energy only.

47. Which example best illustrates kinetic energy?

A. a light bulb that is turned on

B. a car that is parked on top of a hill

C. a comet that is flying through space

D. a battery that is connected to a circuit

48. A total of 750 J of work was done when a force of 125 N was exertedon a box to move it. How far was the box moved?

A. 6.00 m B. 600. m C. 850. m D. 906 m

49. An object has a mass of 12.8 kg and a velocity of 8.4 m/s. What is thekinetic energy of the object?

A. 53.8 J B. 107.5 J C. 451.6 J D. 903.2 J

50. A skateboarder travels from location 1 to location 4 as shown below.

At which location does the skateboarder have the most kinetic energyand the least potential energy?

A. 1 B. 2 C. 3 D. 4

51. An engineering student is gathering data on the motion of a model cartraveling down a ramp. If energy is conserved, the potential energyof the car at the top of the ramp should equal the kinetic energy ofthe car at the bottom of the ramp. After the first trial, the studentcalculates that the kinetic energy at the bottom of the ramp is less thanthe potential energy at the top of the ramp.

Which of the following can best explain this difference?

A. The car gained a small amount of mass as it moved down the ramp.

B. The student accidentally accelerated the car at the top of the ramp.

C. The measured height of the ramp was less than the actual height.

D. The student did not include the generation of heat in the calculation.

52. The diagram below represents a bicyclist at the top of a hill, with fourpoints labeled W, X, Y, and Z.

Assume that the bicyclist does not apply the brakes as he rides downthe hill. At which point will the bicyclist’s kinetic energy be closest tozero?

A. point W B. point X C. point Y D. point Z


53. A pendulum swings back and forth several times, as shown in thediagram below. Assume friction is negligible.

Which of the following graphs best illustrates the potential energy (PE)and the kinetic energy (KE) of the pendulum over a period of severalswings?

A.

B.

C.

D.

54. Starting from rest, a 2-kilogram block of wood slides a distance of twometers down a frictionless slope, as shown.

What is the approximate kinetic energy of the wooden block at thebottom of the slope?

A. 20 J B. 40 J C. 200 J D. 400 J

55. A 9 kg model airplane flies horizontally at a constant speed. If theplane suddenly dives from its altitude of 50 m and levels off at 20 m,how much potential energy does it lose in the dive?

A. 450 J B. 1800 J C. 2700 J D. 9000 J

56. Four students of different weights timed themselves walking up a set ofstairs. Their data are shown below.

StudentStudentWeight(N)

StairHeight(m)

Time(s)

W 440 4.0 15.5

X 550 4.0 22.0

Y 410 4.0 15.8

Z 575 4.0 23.0

Which student used the most power while walking up the stairs?

A. student W B. student X C. student Y D. student Z

57. The potential energy of a 77 kg diver standing on a 20 m high divingtower is 15,400 J. Two-thirds of the way down during the dive into thepool, his potential energy is 5,100 J.

Neglecting air resistance, what is the diver’s kinetic energy at this point?

A. 2,550 J B. 7,650 J C. 10,300 J D. 12,850 J

58. An 85-kg student could produce power output of 1,500 W for a physicslab on power. Assuming that this power output can be maintained, howlong would it take this student to climb the Washington Monument,which is 150 m high?

A. 10 s B. 85 s C. 520 s D. 1,300 s

59. The diagram below shows some positions in the path of a pendulumswinging from a fixed point called a fulcrum.

The pendulum is raised to the start position and released. At which twonumbered positions is the potential energy of the pendulum most likelythe same?

A. position 1 and position 3 B. position 1 and position 4

C. position 2 and position 3 D. position 2 and position 4


60. A steel ball is dropped from a height (h) of 90 m as shown in thediagram below.

What is the potential energy, PE, and kinetic energy, KE, of the ball ath = 36.0 m?

A. PE = 240 J and KE = 240 J B. PE = 240 J and KE = 360 J

C. PE = 360 J and KE = 240 J D. PE = 360 J and KE = 360 J

61. Two boxes, X and Y, are on a shelf 10 meters above the floor. Box Xhas a mass of 4 kg, and Box Y has a mass of 8 kg. Which statementbest represents the relationship between boxes X and Y?

A. Box X and Box Y have no potential energy.

B. Box X has less potential energy than Box Y.

C. Box X has more potential energy than Box Y.

D. Box X and Box Y both have 784 J of potential energy.

62. Helen’s car is being lifted onto the back of a tow truck. The towingplatform is a distance of 1.5 meters from the ground. How much workis required to lift the car if the car has a mass of 900 kilograms?

A. 600 J B. 1,350 J C. 6,000 J D. 13,500 J

63. In the diagram below, a wooden block slides from rest down africtionless incline. The block attains a speed of 3 m/s at the bottom ofthe incline.

How high is the incline?

A. 0.20 m B. 0.30 m C. 0.45 m D. 0.60 m

64. The momentum of a 5-kilogram object moving at 6 meters per second is

A. 1 kg · m/sec B. 5 kg · m/sec

C. 11 kg · m/sec D. 30 kg · m/sec

65. The diagram here represents a mass of 1.0 kilogram traveling at8.0 meters per second in a circular path of radius 4.0 meters.

What is the magnitude of the object’s momentum?

A. 8.0 kg · m/sec B. 16 kg · m/sec

C. 8.0 newtons D. 16 newtons

66. Which of the following objects has the greatest momentum?

A. a 1-kg object moving at 200 m/sec

B. a 10-kg object moving at 30 m/sec

C. a 20-kg object moving at 20 m/sec

D. a 100-kg object moving at 2 m/sec

67. The momentum of a rocket is equal to the

A. sum of its mass and velocity

B. product of its mass and velocity

C. difference between its mass and velocity

D. average of its mass and velocity


68. In the diagram shown, a 10-kilogram ball is fired with a velocity of500 meters per second from a 1,000-kilogram cannon. What is therecoil velocity of the cannon?

A. 5 m/sec B. 2 m/sec C. 10 m/sec D. 500 m/sec

69. The diagram shown represents two objects at rest on a frictionlesshorizontal surface with a spring compressed between them. When thecompressed spring is released, the two objects are pushed apart.

What is the total momentum of the two-object system that is shownafter the expansion of the spring?

A. 20 kg-m/s B. 10 kg-m/s C. 5.0 kg-m/s D. 0 kg-m/s

70. What is the velocity of the 2.0-kilogram object that is shown after beingacted on by 10 newton-seconds of impulse?

A. 1.0 m/s B. 2.0 m/s C. 5.0 m/s D. 10 m/s

71. A 20-kilogram cart traveling east with a speed of 6 meters per secondcollides with a 30-kilogram cart traveling west. If both carts cometo rest immediately after the collision, what was the speed of thewestbound cart before the collision?

A. 6 m/s B. 2 m/s C. 3 m/s D. 4 m/s

72. An unbalanced 6.0-newton force acts eastward on an object for3.0 seconds. The impulse produced by the force is

A. 18 N · s east B. 2.0 N · s east

C. 18 N · s west D. 2.0 N · s west

73. A 0.025-kilogram bullet is fired from a rifle by an unbalanced force of200 newtons. If the force acts on the bullet for 0.1 second, what is themaximum speed attained by the bullet?

A. 5 m/s B. 20 m/s C. 400 m/s D. 800 m/s

74. A 2.0 × 103 kilogram car collides with a tree and is brought to rest in0.50 seconds by an average force of 6.0 × 104 newtons. What is themagnitude of the impulse on the car during this 0.50 second interval?

A. 1.0 × 103 kg · s B. 3.0 × 104 N · s

C. 1.2 × 105 N/s D. 6.0 × 107 N · kg · s


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Regular Physics 2nd Semester Final Review 05/11/2016

1.Answer: D

2.Answer: A

3.Answer: C

4.Answer: C

5.Answer: D

6.Answer: D

7.Answer: D

8.Answer: D

9.Answer: D

10.Answer: A

11.Answer: A

12.Answer: C

13.Answer: B

14.Answer: C

15.Answer: C

16.Answer: C

17.Answer: C

18.Answer: B

19.Answer: B

20.Answer:

21.Answer: A

22.Answer: B

23.Answer: C

24.Answer: D

25.Answer: A

26.Answer: C

27.Answer: A

28.Answer: B

29.Answer: C

30.Answer: A

31.Answer: D

32.Answer: D

33.Answer: B

34.Answer: D

35.Answer: C

36.Answer: D

37.Answer: B

38.Answer: A

39.Answer: C

40.Answer: B

Teacher’s Key Page 2

41.Answer: C

42.Answer: D

43.Answer: A

44.Answer: D

45.Answer: C

46.Answer: B

47.Answer: C

48.Answer: A

49.Answer: C

50.Answer: B

51.Answer: D

52.Answer: A

53.Answer: D

54.Answer: A

55.Answer: C

56.Answer: A

57.Answer: C

58.Answer: B

59.Answer: A

60.Answer: B

61.Answer: B

62.Answer: D

63.Answer: C

64.Answer: D

65.Answer: A

66.Answer: C

67.Answer: B

68.Answer: A

69.Answer: D

70.Answer: C

71.Answer: D

72.Answer: A

73.Answer: D

74.Answer: B

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Regular Physics 2nd Semester Final Review