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Work, KE and PE

Total questions: 51

Worksheet time: 46mins

Name
Class
Date
1.

Olivia's bus traveled along a flat horizontal road. The bus weighs 150kg. If it traveled 50m to the west after 30 seconds of travelling with 60N force, what is the Work done?

a)

1500 J

b)

3000 J

c)

7500 J

d)

9000 J

2.

A 1kg cart moves away from the rest. What will be its Work done if it traveled 8m to the right, and the force applied to it is 30N east?

a)

8 J

b)

30 J

c)

240 J

d)

300 J

3.
The unit used to measure work is the 
a)
Watt
b)
Newton
c)
Joule
d)
meter
4.
A force exerted over a distance to move an object is ______________________.
a)
power
b)
work
c)
momentum
d)
Watt
5.

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

6.
A 5000N block is lifted 10 m. How much work was done?
a)
50000 J
b)
5000 J
c)
500 J
d)
50 J
7.
Force is a _____ or _______
a)
simple    complex
b)
push     pull
c)
up      down
d)
in      out
8.
In which of these cases is work being done? 
a)
A student sleeps
b)
A student pushes a locked door that does not move
c)
a student carries his chair into another room
d)
A student sits on the carpet
9.
What is the unit for mass?
a)
Kilogram (Kg)
b)
Newton (N)
c)
Joule (J)
d)
Watt (W)
10.
How far does a car that weighs 5,000 N go if 18,000 J of work is done on it?
a)
3.8 m
b)
3.7 m
c)
3.2 m
d)
3.6 m
11.
How much work is done in holding a 15 N sack of potatoes while waiting in line at the grocery store for 3 minutes?
a)
15 J
b)
45 J
c)
0 J
d)
5 J
12.
 Work done = Force x _________
a)
a. distance
b)
b. acceleration
c)
c. velocity
d)
d. speed
13.
If a group of workers can apply a force of 1,000 Newtons to move a crate 20 meters, what amount of work will they have accomplished?
a)
20,000 J
b)
200 J
c)
2,000 J
d)
20 J
14.
What is the equation for work?
a)
W = mass * acceleration
b)
W = force * distance
c)
W = force/distance
d)
W = speed/time
15.
What is work?
a)
A push or pull.
b)
The distance an object can be moved.
c)
Applying a force & moving an object.
d)
The rate at which energy is transferred.
16.
The door to the classroom weighs 3 kg. How much work is done when Michael pushes on the door to the classroom with 15 Newtons of force, pushing the door 1.3 meters?
a)
45 Joules
b)
19.5 Joules
c)
3.9 Joules
d)
58.5 Joules
17.
Ms. McDonald holds a desk perfectly still above her head. If she holds the desk at a height of 0.5 meters above her head, and applis 68 Newtons of force to do so, how much work has she done?
a)
34 Joules
b)
0 Joules
18.
I do 12 Joules of work on a bookcase. If I apply a force of 6 Newtons, how far have I moved the bookcase?
a)
2 meters
b)
792 meters
c)
17 meters
d)
320 meters
19.
If you move an object a greater distance... 
a)
you have more power
b)
you do more work
c)
you do the work faster
d)
you do less work
20.
If you push an 5 N object 2 m and then push a 10 N object 2 m. which is TRUE?
a)
you do the same amount of work
b)
you are more powerful when you move the 5 N object
c)
you do more work when you move the 10 N object
d)
you use the same amount of force
21.

Choose the answer that has the most ELASTIC POTENTIAL energy.

a)

a rubber band pulled back all the way

b)

a rubber band pulled back part of the way

c)

a rubber band laying on a table

22.

Choose the answer that has the most GRAVITATIONAL POTENTIAL energy.

a)

a 500 kg boulder on a 5 meter hill

b)

a 500 kg boulder on a 10 meter hill

c)

a 500 kg boulder on a 20 meter hill

23.

Choose the answer that has the most GRAVITATIONAL POTENTIAL energy

a)

a bird flying 7 kmph 3 meters off the ground

b)

a bird flying 7 kmph 6 meters off the ground

c)

a bird flying 10 kmph 3 meters off the ground

24.

Choose the answer that has the most GRAVITATIONAL POTENTIAL energy.

a)

a car going 10 kmph on top of a mountain

b)

a car going 15 kmph on the 3rd floor of a parking garage

c)

a car going 20 kmph on an interstate ramp

25.

What two factors affect GRAVITATIONAL POTENTIAL energy?

a)

mass

b)

height

c)

speed

d)

mass and speed

e)

mass and height

26.

What two factors affect kinetic energy?

a)

mass

b)

speed

c)

height

d)

mass and speed

e)

mass and height

27.

When figuring GRAVITATIONAL POTENTIAL energy, what matters more?

a)

speed

b)

height

c)

amount of fur

28.

Which has more GRAVITATIONAL POTENTIAL energy and WHY? (Choose the BEST explanation!)


A roller coaster car at the top of a hill

OR

a roller coaster car at the bottom of the hill.

a)

The car at the top because it is not moving, so it has more potential energy.

b)

The car at the top because it is higher off the ground, so it has more GPE.

c)

The car at the bottom because it is going faster.

d)

The car at the bottom because it can't go any lower.

29.
The amount of kinetic energy an object has depends on its:
a)
Mass and volume
b)
Volume and friction
c)
Mass and speed
d)
 Speed and density
30.
When is potential energy transformed into kinetic energy?
a)
When an object at rest is lifted to a higher elevation
b)
When an object at rest remains at rest
c)
When an object at rest is put into motion 
d)
When an object in motion is stopped and put at rest 
31.
At which point is potential energy greatest?
a)
W
b)
X
c)
Y
d)
Z
32.
What is the unit of measurement for kinetic energy?
a)
Watts
b)
Joules
c)
Newtons
d)
Meters
33.
Gravitational potential energy depends on the ________ of the object. 
a)
Height (position)
b)
chemical makeup
c)
Mass 
d)
Stretch
34.

which point has the most kinetic energy

a)

g

b)

f

c)

b

d)

d

35.
What is kinetic energy?
a)
energy of work
b)
energy of motion
c)
energy of gravity
d)
energy of power
36.
The faster an object moves, the ________ kinetic energy it has. 
a)
more
b)
less
c)
none of the above
d)
all of the above 
37.

A moving skateboard is an example of what kind of energy?

a)

Potential

b)

Kinetic

38.

What type of energy is greatest when the cannonball is at point C?

a)

kinetic energy

b)

potential energy

c)

elastic energy

d)

awesome sauce

39.

The amount of kinetic energy an object has depends on its:

a)

Mass and volume

b)

Volume and friction

c)

Mass and speed

d)

Speed and density

40.
What is the formula for kinetic energy? 
a)
KE = mgh
b)
KE = 2mv2
c)
KE = 1/2mv2
d)
KE = mv2
41.
What is the kinetic energy of a ball with a mass of 5kg rolling at 10m/s
a)
50 J
b)
5 J
c)
250 J
d)
25 J
42.
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
43.
A hedgehog of mass 2kg runs at a speed of 0.5 m/s. Calculate the kinetic energy.
a)
1.25 J
b)
1.00 J
c)
0.50 J
d)
0.25 J
44.
How much potential energy does a 12N book have if it is 2 meters from the ground?
a)
2.4 J
b)
12 J
c)
14 J
d)
24 J
45.
Calculate the kinetic energy of an elephant when it walks at a speed of 2m/s having a mass, 2000kg.
a)
4,000 J
b)
8,000J
c)
1,000 J
d)
2,000 J
46.
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 how much Kinetic Energy
a)
1890 J
b)
3780 J
c)
945 J
d)
31.5 J
47.
A man stops his car on top of a hill.  Describe this scenario in terms of energy.
a)
High Potential Energy
b)
High Kinetic Energy
c)
It is impossible to tell
d)
No energy left
48.

The kinetic energy of a 7 kg cat moving at 4 m/s is

a)

28 Joules

b)

56 Joules

c)

112 Joules

49.

The gravitational potential energy of an object on the ground is

a)

9.8 Joules

b)

100 Joules

c)

equal to the kinetic energy

d)

0 Joules

50.

The potential energy of a 550 kg missile flying at 800 meters is

a)

4,312,000 Joules

b)

440,000 Joules

c)

176,000,000 Joules

d)

0 Joules

51.

A 80 kg runner going at 2.8 m/s has a kinetic energy of

a)

2195.2 Joules

b)

112 Joules

c)

313.6 Joules

d)

627.2 Joules

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