Free Printable UNIT 7: REVIEW

1.

1. Which of the following accurately defines the term energy?

a)

A. The ability to have power

b)

B. The ability to do work

c)

C. The reasons work changes

d)

D. The amount of time it takes to do work

2.

Which of the following accurately describes the two main forms of energy?

a)

A. The two main types of energy are potential energy, which refers to an object’s motion, and kinetic which refers to an object’s position while at rest

b)

B. The two main forms of energy are work, which is the displacement of an object after a force is applied, and power, which is the rate at which work is done

c)

C. The two main types of energy are kinetic energy, which refers to an object’s motion, and potential which refers to an object’s mass and height.

d)

D. The two main forms of energy are power, which is the displacement of an object after a force is applied, and work, which is the rate at which work is done

3.

Energy that comes from the movement of charged particles through a wire.

a)

A. Chemical

b)

B. Electrical

c)

C. Gravitational

d)

D. Mechanical

4.

Energy present in a nuclear fission.

a)

A. Electrical

b)

B. Nuclear

c)

C. Thermal

d)

D. Sound

5.

Energy that is stored in chemical bonds

a)

A. Chemical

b)

B. Nuclear

c)

C. Gravitational

d)

D. Thermal

6.

Energy that comes from the movement of water to make electricity.

a)

A. Chemical

b)

B. Hydro

c)

C. Radiant

d)

D. Thermal

7.

Energy that comes from electromagnetic waves, such as X- rays.

a)

A. Chemical

b)

B. Electrical

c)

C. Radiant

d)

D. Hyrdo

8.

Your phone charger uses this type of energy.

a)

A. Chemical

b)

B. Electrical

c)

C. Gravitational

d)

D. Mechanical

9.

The type of energy used when you’re listing to “Old Town Road.”

a)

A. Sound

b)

B. Chemical

c)

C. Mechanical

d)

D. Thermal

10.

Energy that increases when height increases.

a)

A. Chemical

b)

B. Nuclear

c)

C. Gravitational

d)

D. Thermal

11.

The standard unit for energy is _________________.

a)

A. Joules

b)

B. Newton

c)

C. Watts

d)

D. m/s

12.

1. TRUE OR FALSE: PE is measured in Watts.

a)

TRUE

b)

FALSE

13.

1. TRUE OR FALSE: Potential Energy is dependent upon mass and velocity

a)

TRUE

b)

FALSE

14.

1. TRUE OR FALSE: Potential Energy and height are directly proportional.

a)

TRUE

b)

FALSE

15.

1. TRUE OR FALSE: As height increases, Potential Energy will decrease.

a)

TRUE

b)

FALSE

16.

A crane at a construction site lifts a block from the ground (a height of 0 m) to a height of 20 m. What happens to the GPE of the block in that specific time frame?

a)

A. The Potential energy of the block increased due to an increase in height.

b)

B. The Potential energy of the block decreased due to an increase in height.

c)

C. The Potential energy of the block remained the same.

D. The Potential energy of the block increased and then decreased because the crane operator put the block down eventually and went home to watch the Bulls game on TV.

d)

D. The Potential energy of the block increased and then decreased because the crane operator put the block down eventually and went home to watch the Bulls game on TV.

17.

April serves a volleyball over the net. In doing so the ball goes from a height of 2 meters, to a height of 6 meters. What happened to the GPE of the volleyball in that specific time frame?

a)

A. The Potential energy of the volleyball increased due to an increase in height.

b)

B. The Potential energy of the volleyball decreased due to an increase in height.

c)

C. The Potential energy of the volleyball remained the same.

d)

D. The Potential energy of the volleyball increased and then decreased because the volleyball eventually had to fall to the ground, she won the game and the town held a parade in her honor.

18.

Find the gravitational potential energy of a book that has a mass of 2.5 kg and is 4.8 m above the ground.

a)

A. 9.8 J

b)

B. 117.6 J

c)

C. 213.9 J

d)

D. 127.6 J

19.

A cat in a tree has a gravitational potential energy of 175 Joules and a mass of 4.5 kg. How high from the ground is the cat?

a)

A. 2.97m

b)

b. 3.97 m

c)

C. 4.97 m

d)

D. 4.97 m

20.

A cup is on a table 3.5 meters above the ground. What is the mass of the cup if it has a PE of 568 Joules?

a)

A. 16.55 kg

b)

B. 2.66 kg

c)

C. 3.66 kg

d)

D. 4.66 kg

21.

A bag with a mass of 12kg sits on the floor. How high would you need to lift it to have a gravitational potential energy of 375 Joules?

a)

A. 12.8 m

b)

B. 3.19 m

c)

C. 1.32 m

d)

D. 2.23 m

22.

A goat at the top of a 5 m hill has a mass of 45 kg. What is the goat’s gravitational potential energy

a)

A. 20.98 J

b)

B. 2,205 J

c)

C. 213.9 J

d)

D. 2127.6 J

23.

A cinder block is sitting on a platform 20 m high. It weighs 79 kg. What is the gravitational potential energy?

a)

A. 15,484 J

b)

B. 11,237.6 J

c)

C. 2,213.9 J

d)

D. 16,235 J

24.

Calculate the potential energy of a 5.2 kg object positioned 5.8 m above the ground.

a)

A. 300 J

b)

B. 350.23 J

c)

C. 295.57 J

d)

D. 420.50 J

25.

A cart is loaded with a brick and pulled at constant speed along an inclined plane to the height of a seat-top. If the mass of the loaded cart is 3.0 kg and the height of the seat top is 0.45 meters, then what is the potential energy of the loaded cart at the height of the seat-top?

a)

A. 10.34 J

b)

B. 13.23 J

c)

C. 15.82 J

d)

D. 21.38 J

26.

26. Calculate the height of an object that has a mass of 6.7 kg and a potential energy of 18.9 Joules.

a)

A. 3.5m

b)

B. 1.9m

c)

C. 0.28m

d)

D. 12.0m

27.

Examine the graphic: What is the gravitational potential energy of the 6 kg cart on top of the incline?

a)

A. 17,6409 J

b)

B. 18,640 J

c)

C. 19,640 J

d)

D. 20,640 J

28.

TRUE OR FALSE: Kinetic Energy is measured in Joules.

a)

TRUE

b)

FALSE

29.

TRUE OR FALSE: Kinetic Energy is measured in Joules.

a)

TRUE

b)

FALSE

30.

TRUE OR FALSE: The Kinetic Energy formula is ½ *m*v.

a)

TRUE

b)

FALSE

31.

TRUE OR FALSE:Kinetic Energy is dependent upon mass and height.

a)

TRUE

b)

FALSE

32.

What system below can show the transformation of potential and kinetic energy in action?

a)

A. A piece of rock and a broken stick on the ground

b)

B. A moving roller coaster & swinging pendulum

c)

C. A dog laying on the floor & cat sleeping

d)

D. A desk & chair in our PHY classroom

33.

What is the kinetic energy of a jogger with a mass of 55.0 kg traveling at a speed of 3.5 m/s?

a)

A. 200 J

b)

B. 250 J

c)

C. 336.87 J

d)

D. 550.26 J

34.

What is the mass of a baseball that has a kinetic energy of 200 J and is traveling 7.5 m/s?

a)

A. 7.11 kg

b)

B. 912.4 kg

c)

C. 10.10 kg

d)

D. 12.34 kg

35.

Object X is moving with a KE of 150 J and has a mass of 50 kg. What is the object’s velocity?

a)

A. 2.45 m/s

b)

B. 5.25 m/s

c)

C. 6.75 m/s

d)

D. 9.12 m/s

36.

What is the kinetic energy of a 1.57 kg pie traveling at a speed of 5.6 m/s?

a)

A. 14.45 J

b)

B. 24.62 J

c)

C. 44.67 J

d)

D. 57.58 J

37.

What is the kinetic energy of the pie (from question above) if it is thrown at 10 m/s?

a)

A. 68.78 J

b)

B. 78.50 J

c)

C. 83.67 J

d)

D. 90.58 J

38.

A clown is hit with a 1.87 kg pie. The kinetic energy if the pie is 42 J. What was the speed of the pie?

a)

A. 5.55 m/s

b)

B. 5.75 m/s

c)

C. 6.70 m/s

d)

D. 7.50 m/s

39.

What KE is developed by a 0.5 kg mass traveling a velocity of 3.5 m/s?

a)

A. 3.06 J

b)

B. 4.09 J

c)

C. 5.50 J D. 6.69 J

d)

D. 6.69 J

40.

What is the KE of a 40 kg dog chasing a cat at 2.3 m/s?

a)

A. 45.89 J

b)

B. 95.25 J

c)

C. 105.8 J

d)

D. 225.02 J

41.

Object Z is moving with a KE of 200 J and has a mass of 75 kg. What is the object’s velocity?

a)

A. 2.0 m/s

b)

B. 2.31 m/s

c)

C. 9.75 m/s

d)

D. 50.7 m/s

42.

You serve a volleyball with the mass of 2.1 kg. The ball leaves your hand with the speed of 30 m/s. Calculate the KE of the volleyball.

a)

A. 745 J

b)

B. 845 J

c)

C 945 J

d)

D. 1,045 J

43.

28. Which letter shows the roller coaster with the maximum kinetic energy?

a)

C

b)

F

c)

E

d)

B

44.

Which letter shows the roller coaster with the maximum potential energy?

a)

B

b)

A

c)

G

d)

C

45.

Which letter shows the roller coaster with the least potential energy?

a)

C

b)

F

c)

E

d)

G

46.

Which letter shows the roller coaster with the least kinetic energy?

a)

B

b)

A

c)

G

d)

F

47.

Which letter shows the ball with the maximum kinetic energy?

a)

B

b)

A

c)

G

d)

F

48.

Which letter shows the ball with the maximum potential energy?

a)

D

b)

E

c)

G

d)

F

49.

Which letter shows the ball with the least potential energy?

a)

B

b)

A

c)

G

d)

F

50.

Which letter shows the ball with the least kinetic energy?

a)

D

b)

E

c)

G

d)

F

51.

28. TRUE OR FALSE: Total Mechanical Energy is measured in Joules.

a)

TRUE

b)

FALSE

52.

TRUE OR FALSE: Total Mechanical Energy in a system can be all PE, KE or the sum of both.

a)

TRUE

b)

FALSE

53.

A 5,500 kg car on 15 m hill has a kinetic energy of 835 J. What is the TME of the car?

a)

A. 808,500 J

b)

B. 809,335 J

c)

C. 835 J

d)

D. 903,877 J

54.

A crane carries a metal tube weighing 95 kg 9.0 m above ground at a speed of 2.0 km/h. What is metal tube’s total mechanical energy?

a)

A. 8,379 J

b)

B. 190 J

c)

C. 8,569 J

d)

D. 987.6 J

55.

A model glider has a mass of 1 kg and a velocity of 2.2 m/s. How much TME does the glider have at 12.3 m?

a)

A. 129 J

b)

B. 120.54 J

c)

C. 122.96 J

d)

D. 345 J

56.

An archer stores 14 J of potential energy in a 0.05 kg arrow when he draws his bow. How fast will the arrow fly when released?

a)

A. 900 m/s

b)

B. 23.7 m/s

c)

C. 45.6 m/s

d)

D. 560 m/s

57.

A 0.10 kg apple is suspended 5 meters above the ground. When it falls, how fast will it be moving right before it hits the ground?

a)

A. 9.9 m/s

b)

B. 90 m/s

c)

C. 98 m/s

d)

D. 4.9 m/s

58.

If a roller coaster car has 100,000 J of kinetic energy when it starts up this hill, how high up could it go before stopping if its mass is 1000 kg?

a)

A. 100 m

b)

B 1,000 m

c)

C 10.2 m

d)

D 9,800 m

UNIT 7: REVIEW

Total questions: 58

Worksheet time: 58mins

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