Which energy transformation occurs in a rubber band ...gilsonscience.weebly.com/uploads/2/1/1/4/21140528/final_exam_review.pdf1. The diagrams below show a model airplane. Which energy

2014 Physics Exam Review

Name: Date:

1. The diagrams below show a model airplane.

Which energy transformation occurs in a rubber band powered model airplane when it is flown?

A. Thermal energy stored in the rubber band is transformed into chemical energy used by the propeller.

B. Kinetic energy stored in the rubber band is transformed into thermal energy used by the propeller.

C. Chemical energy stored in the rubber band is transformed into potential energy used by the propeller.

D. Potential energy stored in the rubber band is transformed into mechanical energy used by the propeller.

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2. A high diver steps off a diving platform that is10 meters above the water. If no air resistance ispresent, during the fall there will be a decrease inthe diver’s

A. gravitational potential energy.

B. total mechanical energy.

C. kinetic energy.

D. momentum.

3.

A group of students were setting up their schoolauditorium for a rock concert to be held over theweekend.

The students used a ramp to get one of the largespeakers onto the stage. The students know thatwork = force × distance. Which of the followingbest explains the advantage of using the rampinstead of lifting the speaker onto the stage?

A. The mass of the speaker is reduced by usingthe ramp.

B. More energy is created by using the ramp.

C. Less force is required by using the ramp.

D. The amount of work done is decreased byusing the ramp.

4. The diagram shows two bowling balls of equalmass. Ball A is resting near the edge of a shelf.Ball B is resting on the ground below.

Which of these statements best describes thediagram above?

A. Ball A has more kinetic energy than Ball B.

B. Ball B has more kinetic energy than Ball A.

C. Ball A has more potential energy than Ball B.

D. Ball B has more potential energy than Ball A.

page 2 2014 Physics Exam Review

5. Two workers use a ramp to help lift a box onto adock as shown below. Use the diagram below toanswer the following question.

Despite the advantage gained by using the ramp,there is a loss of energy mainly due to

A. friction between the box and the ramp.

B. the length of the ramp.

C. the rope stretching when it is pulled.

D. two people pulling the rope.

6. A student riding a bicycle doubles his speed. Bywhat factor does the kinetic energy of the studentand bicycle change?

A. 14 B. 1

2 C. 2 D. 4


7. Machine X produces the least amount of power in a factory. Since power is determined by the amount of workdone and the time it takes, which Work vs. Time graph explains the power produced by Machine X?

A. B.

C. D.


8. The diagram below shows four positions of a ballrolling down and off a curved ramp.

At which position is the kinetic energy of the ballbeing converted into potential energy?

A. position 1 B. position 2

C. position 3 D. position 4

9. A 2.0-kilogram mass is moving with a speed of3.0m

s . What is the kinetic energy of the mass?

A. 1.5 J B. 6.0 J C. 9.0 J D. 12.0 J

10. A 5-kilogram mass is lifted from the ground to aheight of 10 meters. The gravitational potentialenergy of the mass is increased by approximately

A. 0.5 J. B. 50 J. C. 250 J. D. 500 J.

11. The diagram shows a motor being used to lift aload with the use of a pulley.

The motor is lifting the 6 kg box at a constantvelocity. How much work is done on the boxto lift it 2 m? (Assume no resistance from thepulley.)

A. 3 J B. 4 J C. 60 J D. 120 J

12. Four students of different weights timed themselveswalking up a set of stairs. Their data are shownbelow.

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 walkingup the stairs?

A. student W B. student X

C. student Y D. student Z


13. A rock climber weighs 550 N and is carrying abackpack that weighs 50 N. How much total workhas been done after she climbs 12 m?

A. 50 J B. 600 J C. 6000 J D. 7200 J

14. The potential energy of a 77 kg diver standing ona 20 m high diving tower is 15,400 J. Two-thirdsof the way down during the dive into the pool, hispotential energy is 5,100 J.

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

A. 2,550 J B. 7,650 J

C. 10,300 J D. 12,850 J

15. A steel ball is dropped from a height (h) of 90 mas shown in the diagram below.

What is the potential energy, PE, and kineticenergy, KE, of the ball at h = 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

16. A child is on a sled moving down a hill at20 meters

second . The combined mass of the sled andchild is 100 kilograms. The momentum of thechild and sled is

A. 5 kilogram ·ms B. 20 kilogram ·m

s

C. 1000 kilogram ·ms D. 2000 kilogram ·m

s


17.

When these two freight cars of different masscollide and couple, what will be their resultantvelocity?

A. 1 ms B. 2 m

s C. 4 ms D. 8 m

s

18. Which of the following has the least momentum?

A. a 0.5 kg mass with a 1000 m/s velocity

B. a 1 kg mass with a 100 m/s velocity

C. a 10 kg mass with an 11 m/s velocity

D. a 100 kg mass with a 2 m/s velocity

19. At an amusement park, bumper car X moves at aspeed of 2.5 m/s toward car Y, which is at rest, asshown in the diagram below.

Car X collides with car Y. How does themomentum of each car change after the collision?

A. Car X’s momentum increases, and car Y’smomentum decreases.

B. Car X’s momentum decreases, and car Y’smomentum increases.

C. Car X’s momentum is unchanged, and car Y’smomentum increases.

D. Car X’s momentum is unchanged, and car Y’smomentum decreases.

20. An object with a mass of 3 kg has a momentumof 75 kg · m/s. What is its velocity?

A. 0.4 m/s B. 7.1 m/s

C. 25 m/s D. 72 m/s

21. What impulse must be applied to a 25.0-kg cart tocause a velocity change of 12.0 m/s?

A. 0.480 N·s B. 2.10 N·s

C. 13.0 N·s D. 300. N·s


22. A box slides on frictionless ice and collides withanother box sliding in the same direction. Ifthe two boxes stick together after the collision,what assumption can be made about the type ofcollision that occurred?

A. It was a completely inelastic collision.

B. It was an inelastic collision.

C. It was an elastic collision.

D. It was a completely elastic collision.

23. Which statement explains what would happen toan astronaut in space after the astronaut throws arock?

A. The astronaut would remain still because ofthe law of gravitation.

B. The astronaut would move above the rockbecause of the law of gravitation.

C. The astronaut would move in the samedirection that the rock is moving to match therock’s momentum.

D. The astronaut would move in the oppositedirection that the rock is moving to counterthe rock’s momentum.

24.

In this circuit, what is the current through the2-ohm resistor?

A. 0.2 A B. 0.8 A C. 5.0 A D. 8.0 A

25.

How many amperes of current will flow when four1-ohm resistors are in this series circuit?

A. 0.5 ampere B. 1.0 ampere

C. 1.5 amperes D. 2.0 amperes

26. To double the current through a resistor in acircuit,

A. double the voltage across the resistor.

B. double the resistance of the resistor.

C. double the voltage across the resistor anddouble the resistance.

D. double the resistance and decrease the voltageacross it by half.


27. The diagram below shows a simple electricalcircuit.

Which of the following would always increase theflow of current through the lights in the circuitshown above?

A. Decreasing the battery voltage and decreasingthe resistance of the lights.

B. Increasing the battery voltage and increasingthe resistance of the lights.

C. Decreasing the battery voltage and increasingthe resistance of the lights.

D. Increasing the battery voltage and decreasingthe resistance of the lights.

28. A circuit constructed on a circuit board is shownbelow.

Which of the following schematic circuits correctlyrepresents the circuit shown?

A.

B.

C.

D.


29. The diagram below shows a circuit.

The current in this circuit is 3 A. The resistance ofR1 is 2Ω. R2 and R3 each have a resistance of4Ω. What is the voltage for this circuit?

A. 6 V B. 10 V C. 30 V D. 90 V

30. The diagram below represents a parallel circuit.

All three bulbs in this circuit are identical. Whenthe switch is closed, if ammeter A1 measures acurrent of 2.0 A, which of the following is thecurrent through A2?

A. 0.67 A B. 1.3 A

C. 2.0 A D. 6.0 A

31. The measurements in the table below are fromfour circuits that each have the same componentsexcept for the battery.

Circuit Voltage (V) Current (A) Resistance (V)

1 3.0 1.0 3.0

2 6.0 2.0 3.0

3 9.0 3.0 3.0

4 12.0 4.0 3.0

Which of the following statements describes howvoltage, current, and resistance are related byOhm’s law in these circuits?

A. As voltage increases, current decreases andresistance decreases.

B. As voltage increases, current increases andresistance stays the same.

C. As voltage increases, current decreases andresistance stays the same.

D. As voltage increases, current stays the sameand resistance decreases.


32. The diagram below shows the top view of astudent swinging a ball above her head.

This ball continues to move in a circular pathbecause

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 asthe ball.


33. A ball was attached to the end of a string and spun in a circle as shown in Figure 1 below. The ball moved in acounter-clockwise direction when seen from above as shown in Figure 2.

After several spins, the string was released when the ball was at point R. Which diagram shows the direction thatthe ball would fly the instant the string was released?

A. B.

C. D.


34.

What event will produce the greatest increase inthe gravitational force between the two masses?

A. doubling the large mass

B. doubling the distance between the masses

C. reducing the small mass by half

D. reducing the distance between the masses byhalf

35. A small car is being driven in a circular path atconstant speed on a horizontal surface. What isthe direction of the frictional force that keeps thecar from skidding as it travels along this path?

A. opposite the direction of the velocity of thecar

B. in the same direction as the velocity of thecar

C. toward the center of the circle

D. outward from the center of the circle

36. A student studies gravity, using objects that havethe same mass.

Which two objects have the greatest gravitationalforce acting between them?

A.

B.

C.

D.

37. How would the measurable properties of a golfball change if it were moved from Earth to theMoon?

A. It would have the same mass, but a differentweight.

B. It would have the same weight, but a differentmass.

C. It would have the same density, but a differentmass.

D. It would have the same mass, but a differentdensity.

38. What is the mass of an object weighing 63 N onEarth?

A. 0.1 kg B. 6.3 kg C. 73 kg D. 617 kg


39. Which sketch best represents the charge distributionaround a neutral electroscope when a positivelycharged strip is brought near, but does not touch,the electroscope?

A. B.

C. D.

40. Electrical power is measured in units called

A. watts B. joules

C. volts D. amperes

41. A particle of aluminum is found to have 13 protonsin its nucleus with 10 electrons in orbit around thenucleus. This particle would be

A. negatively charged

B. positively charged

C. electrically neutral

D. heavier than a normal aluminum atom

42. Which procedure will give an electroscope apositive charge?

A. touching the electroscope with a neutral object

B. bringing a positively charged object near theelectroscope

C. touching the electroscope with a negativelycharged object

D. touching the electroscope with a positivelycharged object

43. Which of the diagrams given shows the correctdistribution of charge on the knob and leaves ofan electroscope after it has made contact with anegatively charged hard rubber rod?

A. B.

C. D.

44. The coulomb is a unit of

A. resistance B. power

C. charge D. force

45. As the distance between two point charges istripled, the electrostatic force between the charges

A. decreases to one-ninth the original force

B. decreases to one-third the original force

C. increases by a factor of three

D. increases by a factor of nine


46. What is the magnitude of the electrostatic forceand between a charge of +3.0 × 10−5 coulomb anda charge of +6.0 × 10−6 coulomb separated by0.30 meter?

A. 1.8 × 10−3 N B. 5.4 × 10−2 N

C. 5.4 × 100 N D. 1.8 × 101 N

47. The distance between two point charges istripled. Compared to the original force, the newelectrostatic force between the charges is

A. decreased to one-ninth

B. decreased to one-third

C. increased by a factor of three

D. increased by a factor of nine

48. Electrostatic force F exists between two pointcharges with a separation distance d. Which graphbest represents the relationship between F and d ?

A. B.

C. D.

49. The diagram shows the electric field in the vicinityof two charged conducting-spheres, A and B.What is the static electric charge on each of theconducting spheres?

A. A is negative and B is positive.

B. A is positive and B is negative.

C. Both A and B are positive.

D. Both A and B are negative.

50. As shown in the diagram, a neutral pith ballsuspended on a string is attracted to a positivelycharged rod. During contact with the rod, the pithball

A. loses electrons

B. gains electrons

C. loses protons

D. gains protons


51. In each diagram shown, an electron travels to theright between points A and B. In which diagramwould the electron be deflected toward the bottomof the page?

A. B.

C. D.

52. In the diagram, an electron moving with speed venters the space between two oppositely chargedparallel plates. Which diagram best represents thepath the electron follows as it passes between theplates?

A. B.

C. D.

53. Which diagram best represents the electric field ofa point charge?

A. B.

C. D.

54. An inflated balloon which has been rubbed againsta person’s hair is touched to a neutral wall andremains attracted to it. Which diagram bestrepresents the charge distribution on the balloonand wall?

A. B.

C. D.

55. What is the mass of an asteroid with a speed of200 m/s and a momentum of 2,000 kg · m/s?

A. 10 kg B. 1,800 kg

C. 2,200 kg D. 400,000 kg


56. Two toy carts are about to collide, as shown in thediagram below.

Cart 1 Cart 2

15 kg 5 kg

Cart 1 has a mass of 15 kg and is moving rightat a speed of 2 m/s. Cart 2 has a mass of 5 kgand is moving left at a speed of 3 m/s. When theycollide, the carts will stick together.

Neglecting friction, what will be the velocity ofthe carts after the collision?

A. 0.75 m/s left B. 0.75 m/s right

C. 15 m/s left D. 15 m/s right

57. A pendulum swings as shown in the diagram.At which position is the kinetic energy of thependulum bob least?

A. A B. B

C. C D. D

58. A 75-kilogram boy initially at rest skis down theslope as shown. Assuming no frictional loss, whatwill be his kinetic energy at the bottom of theslope?

A. 1,500 joules B. 7,500 joules

C. 15,000 joules D. 75,000 joules

59. What is the spring constant of a spring ofnegligible mass which gained 8 joules of potentialenergy as a result of being compressed 0.4 meter?

A. 100 N/m B. 50 N/m

C. 0.3 N/m D. 40 N/m

60. A 55.0-kilogram diver falls freely from a divingplatform that is 3.00 meters above the surface ofthe water in a pool. When she is 1.00 meter abovethe water, what are her gravitational potentialenergy and kinetic energy with respect to thewater’s surface?

A. PE = 1620 J and KE = 0 J

B. PE = 1080 J and KE = 540 J

C. PE = 810 J and KE = 810 J

D. PE = 540 J and KE = 1080 J


61. An object falls freely near Earth’s surface. Whichgraph best represents the relationship between theobject’s kinetic energy and its time of fall?

A.

B.

C.

D.

62. Two vacationers walk out on a horizontal pier asshown in the accompanying diagram.

As they approach the end of the pier, theirgravitational potential energy will

A. decrease B. increase

C. remain the same

63. Which quantity and unit are correctly paired?

A. velocity: m/s2

B. momentum:kg · m

s2

C. energy:kg · m2

s2

D. work: kg/m

64. A 20-kilogram object strikes the ground with1,960 joules of kinetic energy after falling freelyfrom rest. How far above the ground was theobject when it was released?

A. 10 m B. 14 m C. 98 m D. 200 m

65. The diagram shown represents a frictionless track.A 10-kilogram block starts from rest at point Aand slides along the track.

What is the approximate potential energy of theblock at point C ?

A. 20 J B. 200 J C. 300 J D. 500 J


Problem-Attic format version 4.4.210c_ 2011–2014 EducAide Software

Licensed for use by Renee GilsonTerms of Use at www.problem-attic.com

2014 Physics Exam Review 06/06/2014

1.Answer: D

2.Answer: A

3.Answer: C

4.Answer: C

5.Answer: A

6.Answer: D

7.Answer: D

8.Answer: C

9.Answer: C

10.Answer: D

11.Answer: D

12.Answer: A

13.Answer: D

14.Answer: C

15.Answer: B

16.Answer: D

17.Answer: A

18.Answer: B

19.Answer: B

20.Answer: C

21.Answer: D

22.Answer: A

23.Answer: D

24.Answer: C

25.Answer: C

26.Answer:

27.Answer:

28.Answer: D

29.Answer: C

30.Answer: A

31.Answer: B

32.Answer: C

33.Answer: A

34.Answer: D

35.Answer: C

36.Answer: A

37.Answer: A

38.Answer:

39.Answer: D

40.Answer: A

Teacher’s Key Page 2

41.Answer: B

42.Answer: D

43.Answer: C

44.Answer: C

45.Answer: A

46.Answer: D

47.Answer: A

48.Answer: D

49.Answer: B

50.Answer: A

51.Answer: B

52.Answer: C

53.Answer: A

54.Answer: C

55.Answer: A

56.Answer: B

57.Answer: D

58.Answer: C

59.Answer: A

60.Answer: D

61.Answer: D

62.Answer: C

63.Answer: C

64.Answer: A

65.Answer: B

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Which energy transformation occurs in a rubber band ...gilsonscience.weebly.com/uploads/2/1/1/4/21140528/final_exam_review.pdf1. The diagrams below show a model airplane. Which energy