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PE/KE/Work/Power/ and Force Diagrams

Total questions: 73

Worksheet time: 52mins

Name
Class
Date
1.

What is stored energy due to position above the ground?

a)

kinetic energy

b)

potential energy

c)

thermal energy

d)

nuclear energy

2.

What is energy due to motion?

a)

kinetic energy

b)

potential energy

c)

thermal energy

d)

nuclear energy

3.

What is the sum of kinetic energy and potential energy of a system?

a)

mechanical energy

b)

electrical energy

c)

moving energy

d)

nuclear energy

4.

Where does the pendulum have the greatest kinetic energy?

a)

A

b)

B

c)

C

d)

D

e)

E

5.

Where does the pendulum have the least amount of potential energy?

a)

A

b)

B

c)

C

d)

D

e)

E

6.

Where does the pendulum have the greatest potential energy? (pick 2)

a)

A

b)

B

c)

C

d)

D

e)

E

7.

Where does the pendulum stop moving for just a split second so that it's kinetic energy is zero? (pick 2)

a)

A

b)

B

c)

C

d)

D

e)

E

8.

Where does the pendulum have the same amount of kinetic energy and potential energy? (pick 2)

a)

A

b)

B

c)

C

d)

D

e)

E

9.

Where is potential energy at its maximum?

a)

a

b)

b

c)

c

d)

d

10.

Where is kinetic energy at its maximum?

a)

a

b)

b

c)

c

d)

d

11.

Where is potential energy changing to kinetic energy?

a)

a

b)

b

c)

c

d)

d

12.

What is the kinetic energy at W, where the car is stopped?

a)

0J

b)

10,000J

c)

20,000J

d)

can not be determined

13.

What is the mechanical energy of the system? (ignore friction)

a)

0J

b)

10,000J

c)

20,000J

d)

can not be determined

14.

What is the kinetic energy at position X? (ignore friction)

a)

0J

b)

1,000J

c)

19,000J

d)

can not be determined

15.

What is the kinetic energy at position Y? (ignore friction)

a)

0J

b)

10,000J

c)

20,000J

d)

can not be determined

16.
True or false
You do work only when you exert a force on an object and move it
a)
true
b)
false
17.
Two factors that determine work are
a)
size of the force, and distance
b)
size of the force, and type of force
c)
mass, and distance
18.
work is a measurement of how much force is applied over a certain
a)
distance
b)
velocity
c)
shape
d)
size
19.
units for work are
a)
netwons
b)
joules
c)
meters
d)
seconds
20.
if you push a cart with a force of 60 N for 2 m... how much work have you done
a)
120 J
b)
30 J
c)
120 N 
d)
30 N
21.
The unit used to measure power is the 
a)
Watt
b)
Newton
c)
Joule
d)
Newton*meter
22.

Which of the following is the best example of work being done.

a)

doing homework

b)

lifting a box

c)

pushing a stationary box

d)

holding a box

23.
A 5000N block is lifted 10 m. How much work was done?
a)
50000 J
b)
5000 J
c)
500 J
d)
50 J
24.
 Work done = Force x _________
a)
a. distance
b)
b. acceleration
c)
c. velocity
d)
d. speed
25.
Force is a _____ or _______
a)
simple    complex
b)
push     pull
c)
up      down
d)
in      out
26.
How much work is produced when 350 N is used to move a car 5 m?
a)
70 J
b)
1750 J
c)
355 J
d)
175 J
27.
P=25 watts 
W=5000 Joules 
t=???
a)
200 sec
b)
0.0005 s
c)
125000 s
d)
125 s
28.
How much time is needed to produce 720 Joules of work if 90 watts of power is used? 
a)
0.125 s
b)
8 s
c)
64800 s
d)
80 s
29.
Power is defined as the quantity that measures the rate at which _____ is done or energy is transformed.
a)
energy
b)
time
c)
work
d)
elasticity
30.

The sum of all forces acting on an object and direction is called the

a)

Balanced Force

b)

Net Force

c)

Unbalanced Force

d)

Contact Force

31.

Forces have both ________ and direction.

a)

Magnitude

b)

Speed

c)

Gravity

d)

Height

32.

A Newton is a unit of ______.

a)

Acceleration

b)

Inertia

c)

Force

d)

Velocity

33.

Name the missing force.

a)

Gravitational Force

b)

Normal Force

c)

Friction Force

d)

Applied Force

34.

Name the missing force.

a)

Normal Force

b)

Push/Pull Force

c)

Friction Force

d)

Tension Force

35.

Name the missing force.

a)

Normal Force

b)

Friction Force

c)

Gravitational Force

d)

Push/Pull Force

36.

Name the missing force.

a)

Gravitational Force

b)

Normal Force

c)

Tension Force

d)

Friction Force

37.

The force that keeps objects on top of surfaces instead of letting them sink into the surface is known as:

a)

Normal Force

b)

Gravitational Force

c)

Friction Force

d)

Air resistance

38.

This diagram can be used to indicate which of the following? (TWO correct answers)

a)

An object at rest

b)

An object accelerating

c)

An object decelerating

d)

an object moving at a constant velocity (speed)

e)

(Trick question -- there is only one correct answer)

39.

Which of the following is true about this free-body diagram?

a)

the forces are balanced

b)

the object is moving upward

c)

the object is free-falling

d)

the forces are unbalanced

40.

A leftward force is applied to a crate to push it across the floor at a constant speed. Which is the correct force diagram?

a)
b)
c)
d)
41.

A rightward force is applied to a dresser to accelerate it to the right across the bedroom floor.

a)
b)
c)
d)
42.
A box is moving to the left up a ramp. Which way is the force of friction pointing?
a)
down the ramp to the right
b)
up the ramp to the left
c)
there is no friction
d)
straight up
43.

When the net force is EQUAL to zero, the forces are:

a)

balanced

b)

unbalanced

c)

nonexistent

44.

When the net force is NOT EQUAL to zero, the forces are:

a)

balanced

b)

unbalanced

c)

cancelled

45.

When the forces are balanced there is no change in motion or direction

a)

True

b)

False

46.

Net force is defined as:

a)

all the forces on acting on an object combined

b)

the forward force on an object

c)

the upward force on an object

47.

When forces are going in the SAME direction you

a)

add them

b)

subtract them

c)

multiply them

d)

divide them

48.

When forces are going in the OPPOSITE direction you

a)

add them

b)

subtract them

c)

multiply them

d)

divide them

49.

What is the net force?

a)

3 N

b)

3 N, right

c)

17 N, right

d)

3 N, left

50.

What is the net force?

a)

20 N, right

b)

0 N, no movement

c)

400 N, right

d)

40 N, right

51.

Mr. O'Dell has a mass of 86 kg and is standing on a diving platform 27 meters high. What will be his maximum velocity right as he enters the water?

a)

529 m/s

b)

23.02 m/s

c)

20 m/s

d)

520 m/s

52.

Mr. O'Dell has a mass of 86 kg and is standing on a diving platform 27 meters high. What will be his Kinetic Energy half way down?

a)

11389.41

b)

22778.82

c)

11389.41 J

d)

22778.82 J

53.

Match the following

a)

The rate at which velocy changes

1.

acceleration

b)

Net force is equal to 0 N

2.

Balanced Forces

c)

Net force is greater than 0 N

3.

unbalanced force

d)

A unit of force

4.

Newton

e)

Total force acting on an object and its direction

5.

Net Force

54.
The rate at which work is done is called ____________________ .
a)
Power
b)
Kinetic Energy
c)
Potential Energy
d)
Watts
55.
Are forces balanced or unbalanced when a car is moving at a constant speed in a straight line?
a)
Balanced
b)
Unbalanced
56.
Are forces balanced or unbalanced when a marble speeds up rolling down a ramp?
a)
Balanced
b)
Unbalanced
57.

Ted is trying to move a fridge through his house, he gets stuck on a carpet and even though he is pushing the fridge, it is not moving. What force is acting against him?

a)

gravity

b)

friction

c)

applied force

d)

normal force

58.

A push or pull exerted on an object is called a(n):

a)

Force

b)

Net force

c)

Momentum

d)

Speed

59.

In a force diagram the sizer or length of the arrow tells you:

a)

the strength of the force

b)

the distance of the force

c)

the direction of the force

60.

When determining the NET force on an object you should (TWO correct answers):

a)

subtract forces in opposite directions

b)

add forces in the same direction

c)

subtract forces in the same direction

d)

add forces in the opposite direction

e)

multiply the forces in the same direction

61.

What is the NET FORCE of this diagram?

a)

17 N, right

b)

17 N, left

c)

23 N, right

d)

12 N, up

62.

This ball sits at the top of the hill and later gets pushed down. For letter B (halfway down) on this diagram, how much POTENTIAL energy does the ball have? Answer with a NUMBER, not a word.

(a)  

63.

This ball sits at the top of the hill and later gets pushed down. For letter A on this diagram, how much KINETIC energy does the ball have? Answer with a NUMBER, not a word.

(a)  

64.

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

a)

more

b)

less

c)

none of the above

d)

all of the above

65.

How could you increase the gravitational potential energy of an object without changing its mass and gravity?

a)

Make the object larger

b)

Lower the object towards the ground

c)

Raise the object farther off the ground

d)

Allow the object to roll on the ground

66.

What is the KE of a 0.8 kg football that is kicked at a velocity of 10m/s?

a)

80 J

b)

3.2 J

c)

160 J

d)

40 J

67.
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. 
68.

What two factors affect an object's kinetic energy (KE)?

a)

area and volume

b)

mass and weight

c)

weight and height

d)

mass and speed

69.

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

a)

point W

b)

point X

c)

point y

d)

point z

70.

Clyde and Marilyn are riding a roller coaster. During which section(s) of the track is their kinetic energy converted to potential energy?

a)

from point B to point D only

b)

from point A to point B and from point C to point D

c)

from point A to point B only

d)

from point B to point C only

71.

The rock in the picture is pushed over the edge and it begins to fall. Which type of energy conversion is taking place?

a)

mechanical to heat

b)

sound to mechanical

c)

potential to kinetic

d)

kinetic to potential

72.

What is the GPE of the 3N blue marble at point A? (GPE = weight x height)

a)

15 Joules

b)

9.6 J

c)

6 Newtons

73.

Total Mechanical Energy (ME) = PE + KE. What is NOT true about the ME of the snowboarder?

a)

The ME = 50,000J at every single point

b)

The total ME energy is the same - energy is neither created nor destroyed

c)

ME decreases as the snowboarder reaches the bottom

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