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JAGT - Force Work Energy

Total questions: 80

Worksheet time: 1hrs 23mins

Name
Class
Date
1.
All forces have______
a)
joules
b)
size and direction
c)
height
d)
weight
2.
True or false:  At the peak of the lift hill, a rollercoaster car has more potential energy than any other form of energy.
a)
True
b)
False
3.
According to Newton’s first law of motion, a moving object that is not acted on by an unbalanced force will
a)
remain in motion.
b)
eventually come to a stop.
c)
change its momentum.
d)
accelerate.
4.
The gravitational force of any object near Earth's surface is ____.
a)
unknown
b)
friction
c)
Newton's first law
d)
9.8 m/s2
5.
When the net force is zero, the forces on an object are balanced. True or false.
a)
true
b)
false
6.
What must occur to a shopping cart at rest in order to make it roll forward?
a)
A force must be provided to overcome gravity.
b)
Balanced forces must be acting on the cart.
c)
An unbalanced force applied to the cart pushing or pulling it forward.
d)
The unbalanced force acting upon it must be smaller than that of friction.
7.
A rocket is sent into space.  When the power dies out, the rocket will just keep floating and moving in space forever (unless an unbalanced force, such as a meteor, runs into it).
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
d)
None of them
8.
What type of energy is caused by an object’s vibration?
a)
Electrical
b)
Sound 
c)
Thermal
d)
Light
9.
How much work is done by a motor that lifts a train car on El Toro to the top of a 70-meter hill using a force of 15,000 N?
a)
1,000,000 J
b)
214.29 J
c)
1,050,000 J
d)
105,000 J
10.

Ability to do work is known as?

a)

Energy

b)

Work

c)

Force

d)

Machine

11.

The energy used to turn the blades of a windmill is called_____________

a)

solar energy

b)

water energy

c)

wind energy

d)

muscular energy

12.

The energy obtained from the Sun is known as?

a)

water energy

b)

wind energy

c)

electrical energy

d)

solar energy

13.

Identify whether work is done or not in the picture

a)

Yes

b)

No

14.

Force can move a stationary object or stop a moving object.

a)

True

b)

False

15.

A push or pull that acts on an object is called

a)

Work

b)

Force

c)

Energy

d)

Momentum

16.
The amount of energy used when a force moves an object a certain distance
a)
Work
b)
Force
c)
Newtons 
d)
Joules
17.
Work is measured in... 
a)
Kilograms
b)
m/s
c)
Newtons
d)
Joules 
18.

Energy in the form of motion.

a)

mechanical energy

b)

potential energy

c)

kinetic energy

d)

momentum

19.

Stored energy in the form of position or condition.

a)

potential energy

b)

kinetic energy

c)

momentum

d)

mechanical energy

20.

A student needs 10 Newtons of force to lift a box to the top of a 2 meter shelf. How much work do they do?

a)

12 J

b)

8 J

c)

20 J

d)

5 J

21.

A worker climbs a ladder and does 8 J of work on a 2 N object. What is the distance they lift the object?

a)

18 m

b)

4 m

c)

10 m

d)

6 m

22.

What is mechanical energy?

a)

total kinetic energy

b)

the energy of motion

c)

total kinetic and potential energy

d)

temperature plus heat

23.

If a 1300-kg car has been lifted so it has 19500 J of potential energy, it was lifted up ---.

a)

1.5 m

b)

150 m

c)

15 m

d)

0.67 m

24.

What is the potential energy of a 3kg ball that is on the ground?

a)

0 J

b)

3 J

c)

9.8 J

d)

29.4 J

25.

If the mass of the cart is 15kg, how much is the potential energy of the cart?

a)

0J

b)

1.2J

c)

6J

d)

58.8J

26.

If the mass of the cart is 8.12kg, what is the kinetic energy of the cart?

a)

0J

b)

1.2J

c)

6J

d)

58.8J

27.

What is the S.I unit of work?

a)

N.m2

b)

(Kg.m2) / s2

c)

J/m

d)

J

28.

When a body falls freely towards the earth, then its total energy

a)

(a) increases

b)

(b) decreases

c)

(c) remains constant

d)

(d) first increases and then decreases

29.

A car is accelerated on a levelled road and attains a velocity 4 times of its initial velocity. In this process the potential energy of the car

a)

(a) does not change

b)

(b) becomes twice to that of initial

c)

(c) becomes 4 times that of initial

d)

(d) becomes 16 times that of initial

30.

Which one of the following is not the unit of energy?

a)

(a) joule

b)

(b) newton metre

c)

(c) kilowatt

d)

(d) kilowatt hour

31.

Water stored in a dam possesses

a)

(a) no energy

b)

(b) electrical energy

c)

(c) kinetic energy

d)

(d) potential energy

32.

A body is falling from a height h. After it has fallen a height  h2\frac{h}{2}   , it will possess


a)

(a) only potential energy

b)

(b) only kinetic energy

c)

(c) half potential and half kinetic energy

d)

(d) more kinetic and less potential energy

33.

The number of joules contained in 1kWh is

a)

36×106 J36\times10^{6\ ^{ }}J

b)

3.6×107J3.6\times10^{7^{ }}J

c)

3.6×106J3.6\times10^{6^{ }}J

d)

3.7×107J3.7\times10^{7^{ }}J

34.

If speed of a car becomes 2 times, its kinetic energy becomes

a)

4 times

b)

8 times

c)

16 times

d)

12 times

35.

Mechanical energy of a body includes

a)

Kinetic energy only

b)

Potential energy only

c)

kinetic energy and potential energy

d)

None of these

36.

Commercial unit of energy is

a)

Joule

b)

kWh

c)

Watt

d)

Newton

37.

Power depends on force and speed.

a)

True

b)

False

38.
Calculate the KE of a runner that has a mass of 80 kg and is running at a velocity of 8 m/s
a)
5120 J
b)
320 J
c)
640 J
d)
2560 J
39.
____________ is the ability to cause change. 
a)
Energy 
b)
Force 
c)
Friction
d)
Motion
40.
Energy due to motion is ____________ energy. 
a)
Potential 
b)
Energy
c)
Kinetic
d)
Friction
41.
__________ is stored energy. 
a)
Potential
b)
Kinetic
c)
None of the above 
d)
All of the above 
42.
Gravitational potential energy depends on the ________ and ________ of the object. 
a)
Height and mass
b)
Friction and movement
c)
Mass and Movement
d)
Height and Friction 
43.
When you stretch a rubber band, you are storing __________ energy. 
a)
gravitational potential
b)
elastic potential
c)
kinetic 
d)
none of the above 
44.
Energy can not be created or destroyed, only converted from one form to another.
a)
true
b)
false
45.
At which point is potential energy greatest?
a)
W
b)
X
c)
Y
d)
Z
46.
At which point is kinetic energy greatest? 
a)
W
b)
X
c)
Y
d)
Z
47.
if you push a cart with a force of 60 N resulting in 120 J of work.. how far did you move the cart? 
a)
7200 m
b)
0 m
c)
2 N 
d)
2 m
48.
What is it called  when one form of energy is changed to another form?
a)
Energy change
b)
Energy conversion
c)
Electrical conversion
d)
Force change
49.
What is energy?
a)
the ability to do work
b)
mass and volume
50.
The faster an object moves, the ________ kinetic energy it has. 
a)
more
b)
less
c)
none of the above
d)
all of the above 
51.
What would have the greatest kinetic energy?
a)
A car driving down a hill.
b)
A person running down a hill. 
c)
A ball rolling down a hill. 
52.
Which is the best example that something has kinetic energy?
a)
a. a car parked on a steep hill 
b)
b. a tennis ball rolling across the court
c)
c. a picture hanging on the wall 
d)
d. a piece of coal before it's burned 
53.
What is kinetic energy?
a)
energy of work
b)
energy of motion
c)
energy of gravity
d)
energy of power
54.

What two factors affect an object's kinetic energy?

a)

area and volume

b)

mass and weight

c)

weight and height

d)

mass and speed

55.

Where would this tossed baseball have the least amount of kinetic energy?

a)

point W

b)

point X

c)

point y

d)

point z

56.

Where would this tossed baseball have the greatest amount of kinetic energy?

a)

point W

b)

point X

c)

point y

d)

point z

57.

Increasing an object's mass will increase its kinetic energy.

a)

true

b)

false

58.

Increasing an object's speed will increase its kinetic energy.

a)

false

b)

true

59.
As the velocity of an object decreases its KE will...
a)
increase
b)
decrease
c)
stay the same
60.
Why is it harder to stop a four-person bobsled than a three-person bobsled?
a)
the four-person sled has more KE
b)
the four-person sled has less KE
61.
What kind of energy is in a rock at the edge of a cliff?
a)
Potential
b)
Kinetic
62.
What kind of energy is in a moving skateboard?
a)
Potential
b)
Kinetic
63.
What kind of energy is in a stretched rubber band?
a)
Potential
b)
Kinetic
64.
Wood, batteries, gasoline, and  food are all examples of ________________________.
a)
gravitational potential energy
b)
elastic potential energy
c)
chemical potential energy
d)
None of the above
65.
Energy due to motion is ____________ energy. 
a)
Potential 
b)
Energy
c)
Kinetic
d)
Friction
66.
The faster an object moves, the ________ kinetic energy it has. 
a)
more
b)
less
c)
none of the above
d)
all of the above 
67.

How much gravitational potential energy does a 100kg (220lb.) skydiver have if they jump from 4000 meters?

a)

3920000 J

b)

294 J

c)

180000 J

d)

1225 J

68.

A 6kg cat misjudges a jump and falls 5 meters. How much gravitational potential energy does the cat have? (The cat is fine by the way.)

a)

294 J

b)

180000 J

c)

1225 J

d)

3920000 J

69.

What is the kinetic energy of a 1,600kg Mustang travelling at 15 m/s (33mph)

a)

180000 J

b)

294 J

c)

1225 J

d)

3920000 J

70.

A 50kg (100lb) person is running at 7m/s (about 16 mph). How much kinetic energy do they have?

a)

1225 J

b)

180000 J

c)

294 J

d)

3920000 J

71.

What is the unit for mass?

a)

kilogram (kg)

b)

meter (m)

c)

Newton (N)

d)

Joule (J)

72.

What is the unit for distance?

a)

kilogram (kg)

b)

meter (m)

c)

Newton (N)

d)

Joule (J)

73.

What is the unit for force?

a)

kilogram (kg)

b)

meter (m)

c)

Newton (N)

d)

Joule (J)

74.

What is the unit for energy?

a)

kilogram (kg)

b)

meter (m)

c)

Newton (N)

d)

Joule (J)

75.

What is the formula for speed?

a)

distance / time

b)

mass x acceleration

c)

velocity / time

d)

½(mass) x (velocity)2

e)

(mass) x (acceleration of gravity) x (height)

76.

What is the formula for force?

a)

distance / time

b)

mass x acceleration

c)

velocity / time

d)

½(mass) x (velocity)2

e)

(mass) x (acceleration of gravity) x (height)

77.

What is the formula for acceleration?

a)

distance / time

b)

mass x acceleration

c)

velocity / time

d)

½(mass) x (velocity)2

e)

(mass) x (acceleration of gravity) x (height)

78.

What is the formula for kinetic energy?

a)

distance / time

b)

mass x acceleration

c)

velocity / time

d)

½(mass) x (velocity)2

e)

(mass) x (acceleration of gravity) x (height)

79.

What is the formula for gravitational potential energy?

a)

distance / time

b)

mass x acceleration

c)

velocity / time

d)

½(mass) x (velocity)2

e)

(mass) x (acceleration of gravity) x (height)

80.

A 2kg television falls from 1 meter. How much energy does it have?

a)

19.6 J

b)

196 J

c)

2 J

d)

9.8J

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