Free Printable Physics Revision

1.

Calculate the potential energy of a car with a mass of 2,500 kg that is on a hill 100 meters above sea level.

a)

250,000 J

b)

2,450,000 J

c)

2,451,663 J

d)

248 J

2.

Lilly's cat ran through your yard. The cat has a mass of 5 kg. He is running at a speed of 3 m/s. What is the kinetic energy of the cat as he runs?

a)

8.5 J

b)

45 J

c)

7.5 J

d)

22.5 J

3.

What is the mass of a ball that has a kinetic energy of 115 J and is traveling at 9 m/s?

a)

1035 kg

b)

23.5 kg

c)

12.8 kg

d)

2.84 kg

4.

A exercise ball is on a table 2.5 m above the ground. What is the mass of the ball if it has a GPE of 56.8 J?

a)

71 kg

b)

22.72 kg

c)

142 kg

d)

2.32 kg

5.

Ty lifts a set of 1250kg weights a vertical distance of 2m in a weight lifting contest. What Potential Energy do the weights now possess?

a)

12,789 Joules

b)

24,500 Joules

c)

4,500 Joules

6.

On a roller coaster, where is maximum kinetic energy?

a)

At the bottom of a big hill

b)

When going around a corner

c)

When going upside down

d)

At the top of a big hill

7.

A baseball held by a pitcher has _____________energy.

a)

Kinetic

b)

Chemical

c)

Potential

d)

Thermal

8.

At which point is kinetic energy greatest?

a)

W

b)

X

c)

Y

d)

Z

9.

At which point is potential energy greatest?

a)

W

b)

X

c)

Y

d)

Z

10.

A car is sitting on top of a ramp. As the car rolls down the ramp, the potential energy of the car decreases. What happens to the potential energy as the car moves?

a)

It is lost as gravitational energy

b)

It is converted to kinetic energy

c)

It is destroyed as the car moves

d)

It is used to make the car slow down

11.

What kind of energy is in a rock at the edge of a cliff?

a)

Potential

b)

Kinetic

12.

What kind of energy is in a moving skateboard?

a)

Potential

b)

Kinetic

13.

If you have two objects with different masses about to fall from the same height, which one will have the greatest potential energy?

a)

SMALLEST MASS

b)

LARGEST MASS

c)

MOST ROUND

d)

MOST FLAT

14.

An object falling from 100m will have ___________ potential than an object falling from 200m.

a)

MORE

b)

LESS

c)

THE SAME

d)

ALL OF THESE

15.

What is the kinetic energy of a zorb and human with a total mass of 90Kg rolling at 10m/s?

a)

3,700J

b)

900J

c)

4,500J

d)

6,500J

16.

What is the kinetic energy of a 4kg shotput thrown with a velocity of 13m/s

a)

676 J

b)

3.25 J

c)

17J

d)

338 J

17.

An explosion of gas from a Hawaiian volcano blows a rock into the sky. the rock has 2000J of kinetic energy. What was its mass if the rock had a velocity of 20m/s

a)

200Kg

b)

20,000Kg

c)

10Kg

d)

200Kg

18.

You serve a volley ball with a mass of 2.1 kg. The ball leaves your hand with a speed of 30m/s. The ball has ____ kinetic energy. Calculate it.

a)

1890 J

b)

3780 J

c)

945 J

d)

31.5 J

19.

A golf pro swings his driver which weighs 0.75Kg at a velocity of 60 m/s. Calculate the kinetic energy of the club.

a)

2700 J

b)

16.9 J

c)

1350 J

d)

45 J

20.

A rabbit of mass 3kg walks at a speed of 0.5m/s. Calculate its kinetic energy.

a)

0.5 J

b)

0.75 J

c)

0.255 J

d)

0.375 J

21.

What is the kinetic energy of a soccer ball which has a mass of 0.8 kg and is kicked with a velocity of 10 m/s?

a)

40 J

b)

41 J

c)

4 J

d)

80 J

22.

Calculate the kinetic energy of a running back that has a mass of 80 kg and is running as a velocity of 8 m/s.

a)

320 J

b)

2650 J

c)

2560 J

d)

5120 J

23.

There is a clock at the top of a tower that is 45m high. The clock weighs 20 kg. Calculate its potential energy. Remember g=9.8 m/s

a)

8100 J

b)

9.8 m/s

c)

900 J

d)

8820 J

24.

What is the GPE of a 0.3 kg apple on top of a 1 m tree?

a)

0 J

b)

2.94 J

c)

0.3 J

d)

2.96 J

25.

A golf pro swings his driver which weighs 0.75Kg at a velocity of 60 m/s. Calculate the kinetic energy of the club.

a)

2700 J

b)

16.9 J

c)

1350 J

d)

45 J

26.

What is the KE of a football which has a mass of 0.8 kg and is kicked at a velocity of 10m/s.

a)

80 J

b)

3.2 J

c)

160 J

d)

40 J

27.

You serve a volley ball with a mass of 2.1 kg. The ball leaves your hand with a speed of 30m/s. The ball has ____ kinetic energy. Calculate it.

a)

1890 J

b)

3780 J

c)

945 J

d)

31.5 J

28.

An 8kg dog chases a cat. if the dog has 400J of kinetic energy. What is the speed of the dog?

a)

10 m/s

b)

5 m/s

c)

1 m/s

d)

100 m/s

29.

A red car and a blue car move at different speeds. The cars both have a mass of 360 kg. If the red car is 3 times faster than the blue car,

a)

the blue car's kinetic energy will be 9 times greater.

b)

the red car's gravitational potential energy will be the same as the blue car's.

c)

the blue car's kinetic energy will be 3 times greater.

d)

the red car's kinetic energy will be 3 times greater.

30.

A red car and a blue car move at different speeds. The cars both have a mass of 360 kg. If the red car is 3 times faster than the blue car,

a)

the blue car's kinetic energy will be 9 times greater.

b)

the red car's kinetic energy will be 9 times greater.

c)

the blue car's kinetic energy will be 3 times greater.

d)

the red car's kinetic energy will be 3 times greater.

31.

A 5 Kg body is having a Kinetic energy of 250 J. What is the velocity of the body?

a)

10 m/s

b)

15 m/s

c)

20 m/s

d)

40 m/s

32.

Energy due to motion is ____________ energy.

a)

Potential

b)

Energy

c)

Kinetic

d)

Friction

33.

The faster an object moves, the ________ kinetic energy it has.

a)

more

b)

less

c)

none of the above

d)

all of the above

34.

If 150 Joules of work is needed to move a box 10 meters, what force was used?

a)

1500 N

b)

15 N

c)

1.5 N

d)

150 N

35.

Alice kicks a soccer ball with a mass of 2.1 kg. The ball leaves the ground moving 30 meters per second. What is the kinetic energy of the soccer ball?

a)

567 J

b)

900 J

c)

945 J

d)

30 J

36.

Alice kicks a soccer ball with a mass of 2.1 kg. The ball leaves the ground moving 30 meters per second. What is the kinetic energy of the soccer ball? (KE = 1/2mv²)

a)

567 J

b)

900 J

c)

945 J

d)

30 J

37.

If the 0.3 kg marble was moving at 6 m/s at the bottom of the ramp, how much kinetic energy did the marble have? (KE = 1/2mv²)

a)

5.4 J

b)

1.8 J

c)

3 J

d)

6 J

38.

A exercise ball is on a table 2.5 m above the ground. What is the mass of the ball if it has a GPE of 56.8 J?

a)

71 kg

b)

22.72 kg

c)

142 kg

d)

2.32 kg

39.

This panda is 832 kg and is 0.31m off the ground. How much gravitational potential energy have they got?

a)

1341.9 J

b)

268387 J

c)

2579.2 J

d)

257.92 J

40.

How much gravitational potential energy has Nathan got 4 m off the ground with a weight of 380 N.

a)

152 J

b)

15.2 J

c)

15200 J

d)

1520 J

41.

Bob (45 kg) is moving at 55 ms-1 Calculate the kinetic energy that bob has.

a)

2475 J

b)

1237.5 J

c)

68062.5 J

d)

136125 J

42.

The law of conservation of energy states that when one form of energy is converted into another,

a)

energy is destroyed in the process

b)

no energy is destroyed in the process

c)

energy is created in the process

d)

some amount of energy cannot be accounted for

43.

The process of energy changing from one form into another

a)

efficency

b)

law of conservation of energy

c)

energy transformation

d)

thermal energy

44.

Efficiency is...

a)

The percentage of energy that is actually used to do work

b)

The stuff in the walls that keeps energy in

45.

Which of the following energy transformations occur when a lamp that is plugged into a wall socket is functioning correctly?

a)

Chemical to light

b)

Electrical to chemical

c)

Electrical to light

d)

Chemical to electrical

46.

In energy transformations, "wasted energy" usually takes what form?

a)

heat

b)

chemical energy

c)

light

d)

sound waves

47.

Total energy = 200J
Useful energy = 20J

Workout the efficiency of this lightbulb.
$efficiency\ =\ \frac{useful\ enegy}{total\ energy\ in}\ \times100$

a)

100%

b)

80%

c)

40%

d)

10%

48.

Total energy = 350J
Useful energy = 70J

Workout the efficiency of this iphoneX.
$efficiency\ =\ \frac{useful\ energy}{total\ energy\ in}\ \times100\%$

a)

100%

b)

80%

c)

40%

d)

20%

49.

Total energy = 1000J
Useful energy = 1000J

Workout the efficiency of this hairdryer.
$efficiency\ =\ \frac{useful\ energy}{total\ energy\ in\ }\ \times100\%$

a)

100%

b)

50%

c)

40%

d)

20%

50.

Total energy = 34000J
Useful energy = 340J

Workout the efficiency of this vintage VW Beetle.
$efficiency\ =\ \frac{useful\ energy}{total\ energy\ in}\ \times100\%$

a)

100%

b)

10%

c)

40%

d)

20%

51.

Total energy = 1000000J
Useful energy = 850000J

Workout the efficiency of this airplane. $efficiency\ =\ \frac{useful\ energy}{total\ energy\ in}\ \times100\%$

a)

85%

b)

10%

c)

40%

d)

20%

52.

Total energy = 250J
Useful energy = 50J

Workout the efficiency of these fairy lights. $efficiency\ =\ \frac{useful\ energy}{total\ energy\ in}\ \times100\%$

a)

13.33%

b)

14%

c)

20%

d)

21%

53.

This car needs 8600J of energy to power it. If 5000J is changed into useful energy, how much energy is wasted?

a)

13600J

b)

3600J

c)

5000J

d)

8600J

54.

Useful energy: 3600J
Total energy: 4700J

Calculate the efficiency of this fancy Ferrari car. $efficiency\ =\ \frac{useful\ energy}{total\ energy\ in}\ \times100\%$

a)

77J

b)

77%

c)

77cm

d)

77s

55.

What is the efficiency of a machine if 55.3 J of work are done on the machine, but only 14.3 J is produced by the 1machine?

a)

0.25 J

b)

26%

c)

386%

d)

3.86 J

56.

What is the efficiency of the machine if the input is 263 J and the output is 142 J?

a)

6.26%

b)

54%

c)

100%

d)

260%

57.

What is the work output of a machine that has a work input of 2,800 Joules and an efficiency of 92.3%?

a)

2,690J

b)

92.3J

c)

0.0082J

d)

2,584.4

58.

What is the efficiency of a machine when the input is 263 J and the output is 142 J.

a)

1.85 %

b)

18.5 %

c)

5.39 %

d)

53.9 %

59.

Energy is measured in?

a)

kilograms

b)

grams

c)

joules

d)

litres

60.

what are the two main forms of energy?

a)

potential and gravitational

b)

potential and moving

c)

potential and kinetic

d)

kinetic and elastic

61.

A team of university students test a new car they are designing. They find out that only 3,500 J of the energy is transferred to movement (kinetic) energy and 9,000 J is transferred as heat energy. How efficient is the car?

(note : round your answer to whole number!)

(a)

62.

Calculate the efficiency of an engine that transforms 2000 J of chemical potential energy into 700 J of kinetic energy, and 1300 J into wasted heat and sound energy.

(a)

63.

Calculate the efficiency of a torch that transforms 500 J of chemical potential energy into 475 J of light, and 25 J of wasted heat and sound energy.

(Note : round your answer to whole number)

(a)

64.

A 2600 kilogram car is moving at a speed of 25 m/s. How much kinetic energy does the car have?

a)

427,500 J

b)

237,500 J

c)

437,500 J

d)

537,500 J

65.

A roller coaster has a mass of 250 kg, and is 50 meters above the ground, what is the potential energy?

a)

122,625 Joules

b)

5,600 Joules

c)

234,799 Joules

66.

What type of energy transformation occurs, when a hawk eats a mouse and then uses the energy from the mouse to fly?

a)

mechanical energy to chemical energy

b)

thermal energy to mechanical energy

c)

chemical energy to mechanical energy

d)

mechanical energy to thermal energy

67.

What is the energy transformation that occurs in an electric pencil sharpener?

a)

mechanical energy to electrical energy

b)

electrical energy to mechanical energy

c)

radiant energy to sound energy

d)

chemical energy to mechanical energy

68.

Which object shows an energy transformation from electrical to mechanical?

a)

b)

c)

d)

69.

When a car burns gasoline it creates hot air to move the pistons in the engine, which causes the car to move. What energy transformation occur from the fuel to the movement of a car?

a)

thermal energy to mechanical energy

b)

thermal energy to chemical energy to mechanical energy

c)

chemical energy to thermal energy to mechanical energy

d)

chemical energy to electrical energy

70.

The roller coaster cart has the most kinetic energy at position-

a)

W

b)

X

c)

Y

d)

Z

71.

Where is the kinetic energy the greatest?

a)

A

b)

B

c)

C

d)

D

72.

Which items would have this energy transformation: electrical energy -> thermal energy and light energy?

a)

toaster

b)

candle burning

c)

windmill turning

d)

Iron for your clothes

73.

Which items would have this energy transformation: chemical energy -> thermal and light energy?

a)

tanning bed

b)

candle burning

c)

wind turbine turning

d)

solar calculator

74.

Which items would have this energy transformation: mechanical energy -> sound energy?

a)

turning on a flashlight

b)

nuclear power plant

c)

wind turbine turning

d)

playing a violin

75.

Which items would have this energy transformation: mechanical energy -> electrical energy?

a)

turning on a flashlight

b)

nuclear power plant

c)

wind turbine turning

d)

tanning bed

76.

What kind of energy is represented in the picture?

a)

Thermal

b)

Chemical

c)

Sound

d)

Kinetic

77.

What energy transformation occurs as howler monkeys loudly call to each other in the forest?

a)

Chemical --> Mechanical --> Sound

b)

Chemical --> Sound --> Thermal

c)

Sound --> Chemical --> Radiant

d)

Mechanical --> Chemical --> Sound

78.

What energy transformation occurs in the chameleon as it quickly launches its tongue to catch an insect?

a)

Radiant --> Chemical

b)

Thermal --> Chemical

c)

Chemical --> Mechanical

d)

Mechanical --> Chemical

79.

What energy transformation occurs as as an elephant walks through the savanna?

a)

Thermal --> Chemical + Mechanical

b)

Mechanical --> Chemical + Thermal

c)

Radiant --> Chemical + Mechanical

d)

Chemical --> Mechanical + Thermal

80.

What energy transformation occurs during photosynthesis?

a)

Chemical --> Radiant

b)

Thermal --> Chemical

c)

Radiant --> Chemical

d)

Mechanical --> Thermal

81.

What do sound energy, radiant energy, and thermal energy all have in common?

a)

They're all forms of kinetic energy

b)

They're all made of similar atoms and molecules

c)

They're all made by plants during photosynthesis

d)

All of these choices

82.

As an object falls its __________ energy decreases and its kinetic energy increases

a)

potential

b)

chemical

c)

thermal

d)

electric

83.

What kind of energy in the sun transforms into electromagnetic energy?

a)

nuclear

b)

thermal

c)

electric

d)

chemical

84.

Which of the following is a correct example of energy transformation of chemical energy into electrical energy?

a)

An oil lamp lighting up a room

b)

A car battery making headlights shine

c)

Sunlight providing power to a solar calculator

d)

A blowtorch melting two pieces of metal together

85.

How much potential energy is at the top of a hill on a rollar coaster ride

a)

100%

b)

50%

c)

0%

d)

20%

86.

As a pendulum swings from its highest to lowest position, what happens to its kinetic and potential energy?

a)

Both the potential energy and kinetic energy decrease

b)

The potential energy decreases while the kinetic energy increases

c)

The kinetic energy decreases while the potential energy increases

d)

Bothe the potential energy and kinetic energy increase

87.

Energy stored in the height of an object is called ___________ potential energy.

a)

Elastic

b)

Chemical

c)

Gravitational

d)

Nuclear

Physics Revision

Total questions: 87

Worksheet time: 3hrs 28mins

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