Exam Review Part 2 Name: Date - Weeblyvalentineg.weebly.com/uploads/4/8/5/7/48575501/exam... ·...

Exam Review Part 2

Name: Date:

1.

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

2. In an elastic collision, momentum is conserved, asis

A. kinetic energy. B. potential energy.

C. speed. D. velocity.

3. A bowling ball with a mass of 8.0 kg rolls down abowling lane at 2.0 m/s. What is the momentumof the bowling ball?

A. 4.0 kg · m/s B. 6.0 kg · m/s

C. 10.0 kg · m/s D. 16.0 kg · m/s

4. 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.

page 1

5. 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

6. During a science demonstration, a teacher pushedcubes of different masses with different amountsof force. Which diagram shows the cube that willmove most rapidly when pushed with the forcerepresented by the arrow?

A.

B.

C.

D.

page 2 Exam Review Part 2

7. 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.

8.

A family is moving from Pennsylvania toConnecticut during the summer.

As the moving van burns gasoline in its engine, itconverts .

A. chemical energy into mechanical energy

B. kinetic energy into potential energy

C. thermal energy into electrical energy

D. mechanical energy into kinetic energy


9. Use the pictures below to answer the followingquestion.

Which vehicle pictured above would require themore powerful braking system?

A. the car

B. the truck

C. neither; both need equally powerful brakingsystems

D. Not enough information is given.

10. The diagram below represents a diver’s motionfrom the top of a high diving board into a pool ofwater.

At which labeled point does the diver have theleast potential energy?

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


11. The figure below shows a wagon that moves frompoint X to point Y .

Which of the following best describes the wagon’schange in energy as it coasts from point X topoint Y?

A. The wagon has the same kinetic energy atpoint Y and at point X.

B. The wagon has more kinetic energy at point Ythan at point X.

C. The wagon has the same gravitationalpotential energy at point Y and at point X.

D. The wagon has more gravitational potentialenergy at point Y than at point X.

12. The diagram below represents a bicyclist at the topof a hill, with four points labeled W, X, Y, and Z.

Assume that the bicyclist does not apply the brakesas he rides down the hill. At which point will thebicyclist’s kinetic energy be closest to zero?

A. point W B. point X

C. point Y D. point Z


13. While playing a game at a fair, a person lifts amallet above her head. She then lets the malletfall toward a target, as shown below.

Which of the following statements describes anenergy change that takes place as the person liftsthe mallet and then lets it fall toward the target?

A. Kinetic energy increases as the mallet reachesits highest point.

B. Potential energy decreases as the malletreaches its highest point.

C. Kinetic energy converts to potential energy asthe mallet falls toward the target.

D. Potential energy converts to kinetic energy asthe mallet falls toward the target.


14. The graph below shows the potential and kinetic energies of a falling rock at one point in time.

Assume energy is conserved and no measurable heat is generated. Which graph best shows the potential andkinetic energies at a later time as the rock continues to fall?

A. B.

C. D.


15. A bicyclist rides down a hill, as shown below.

At which point is the bicyclist’s gravitationalpotential energy the lowest?

A. point W B. point X

C. point Y D. point Z

16. The diagram below shows a ball rolling up a rampwith an initial speed of 10 m/s.

When will the ball have maximum potentialenergy?

A. when the ball reaches its maximum height

B. when the ball reaches its maximum speed

C. when the friction on the ramp becomes 0 N

D. when the slope of the ramp becomes 45

17. A stretched spring attached to two fixed points iscompressed on one end and released, as shownbelow.

The resulting wave travels back and forth betweenthe two fixed ends of the spring until it comes toa stop. This mechanical wave is an example of a

A. transverse wave.

B. longitudinal wave.

C. superpositioned wave.

D. refracted wave.

18. Sound waves cannot carry energy through

A. water. B. air.

C. a mirror. D. a vacuum.

19. In a vacuum, radio waves, visible light, and x-raysall have the same

A. wavelength. B. speed.

C. frequency. D. energy.


20. Objects appear different in size and shape in acontainer of water due to

A. refraction of the light waves.

B. interference of the water and light waves.

C. polarization of the light waves.

D. diffraction of the light waves.

21. The diagram below shows an incident light raystriking a shiny piece of aluminum foil.

Which of the following statements describes whatwill most likely happen to the light ray after itstrikes the aluminum foil?

A. The light ray will be absorbed by the shinymetal.

B. The light ray will be refracted after passingthrough the shiny metal.

C. The light ray will be reflected at a differentangle to the normal than the incident lightray.

D. The light ray will be reflected at the sameangle to the normal as the incident light ray.

22. Which of the following diagrams represents therefraction of waves?

A.

B.

C.

D.


23. Which of the following statements explains whylight is refracted as it moves from air into glass?

A. The speed of light decreases in glass.

B. The energy of light increases in glass.

C. The frequency of light decreases in glass.

D. The wavelength of light increases in glass.

24. Which diagram best represents the reflection oflight rays from a plane mirror?

A.

B.

C.

D.

25. An object produces a sound with constantfrequency as the object moves from X to Y. Whichdiagram represents the pattern of the sound?

A.

B.

C.

D.


26. Look at the diagram of the circuit below.

Which statement best describes what will happenif Bulb 2 burns out?

A. Bulb 1 will also burn out.

B. Bulb 1 will flash on and off.

C. Bulb 1 will stay lit and become brighter.

D. Bulb 1 will stay lit but will become lessbright.

27. Which best describes a parallel circuit?

A. Electricity flows along one pathway.

B. The flow of electricity comes from onesource.

C. Electricity flows along more than one pathway.

D. The flow of electricity comes from more thanone source.

28. The diagram below shows an electrical circuit.

This circuit is a series circuit because

A. it has two light bulbs.

B. the same current flows through both lightbulbs.

C. it uses a single battery.

D. the current is divided between the light bulbs.

29.

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


30.

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

31.

What is the current through the battery?

A. 1 A B. 2 A C. 4 A D. 8 A

32. Electrical systems can be designed to performa variety of tasks, using series, parallel, orcombination circuits. Which bulb(s) will be lit inthe diagram?

A. A B. A and C

C. B and C D. A, B, and C

33. A circuit is shown.

What will happen if a wire is disconnected?

A. Electricity will continue to flow.

B. The battery will run out of energy.

C. The bell will be unable to ring.

D. The bulb will stay lit.


34. Assuming that the light bulbs and batteries are thesame, which of these circuits would allow lightbulb A to shine the brightest?

A.

B.

C.

D.

35. Students in a physics lab are studying the circuitshown in the diagram below.

Which of the following options will double thecurrent through the ammeter?

A. replacing the battery with a 5 V battery

B. adding a 30Ω resistor in parallel with R.

C. replacing the resistor with a 30Ω resistor .

D. adding a second 60Ω resistor in series with R.

36. A 72 W navigation unit on a commercial aircrafthas a 24 V power supply and uses 3 A of electriccurrent. What is the electrical resistance of thenavigation unit?

A. 4Ω B. 8Ω C. 13Ω D. 22Ω


37. The diagram below shows a circuit.

Which of the following diagrams shows a voltmetercorrectly attached to measure the voltage drop inR2 ?

A.

B.

C.

D.

38. A portable electric hairdryer with a resistance of15 Ω connected to a 120 V outlet.

Ohm’s Law

V = IR

I =V

R

R =V

I

What is the approximate current in the circuit?

A. 8 A B. 15 A C. 105 A D. 180 A


39. A circuit constructed on a circuit board is shown below.

Which of the following schematic circuits correctly represents the circuit shown?

A. B.

C. D.


40. The diagram below shows a circuit with fouridentical light bulbs.

To which of the following two points should avoltmeter be attached in order to determine thevoltage drop across the entire circuit?

A. points L and M B. points M and N

C. points N and O D. points L and O


Problem-Attic format version 4.4.268c_ 2011–2016 EducAide SoftwareLicensed for use by G Valentine

Terms of Use at www.problem-attic.com

Exam Review Part 2 06/08/2016

1.Answer: A

2.Answer: A

3.Answer: D

4.Answer: B

5.Answer: B

6.Answer: C

7.Answer: C

8.Answer: A

9.Answer: B

10.Answer: D

11.Answer: D

12.Answer: A

13.Answer: D

14.Answer: B

15.Answer: D

16.Answer: A

17.Answer: B

18.Answer: D

19.Answer: B

20.Answer: A

21.Answer: D

22.Answer: B

23.Answer: A

24.Answer: A

25.Answer: D

26.Answer: C

27.Answer: C

28.Answer: B

29.Answer: C

30.Answer: C

31.Answer: A

32.Answer: A

33.Answer: C

34.Answer: C

35.Answer: C

36.Answer: B

37.Answer: B

38.Answer: A

39.Answer: D

40.Answer: D

Exam Review Part 2 Name: Date - Weeblyvalentineg.weebly.com/uploads/4/8/5/7/48575501/exam... ·...

Documents

Transcript of Exam Review Part 2 Name: Date - Weeblyvalentineg.weebly.com/uploads/4/8/5/7/48575501/exam... ·...