Font size
S
M
L
XL
WorksheetsWork, Energy, Power
Total questions: 86
Worksheet time: 1hrs 25mins
Name
Class
Date
1.
What is NOT one of the six simple machines?
a)
Lever
b)
Pulley
c)
Hinge
d)
Screw
2.
What is being transferred as you do work?
a)
Energy
b)
Heat
c)
Power
d)
Gravitational Potential Energy
3.
How do you calculate power?
a)
P = W/t
b)
P = E/t
c)
P = w * t
d)
P = bbq/chicken
4.
How do we calculate work?
a)
W = F * d
b)
w = f * D
c)
W = F * D
d)
w = f * d
5.
How much work is being done with 200 N of force over 426 meters?
a)
85,200 J
b)
45,620 J
c)
90,480 J
d)
62,329 J
6.
The SI unit of work is?
a)
Joules
b)
Watts
c)
Newtons
d)
meters
7.
The energy of movement is...?
a)
Kinetic
b)
Potential
8.
Energy that is stored is called...
a)
Kinetic
b)
Potential
9.
The SI unit for power is...?
a)
Watts
b)
Joules
c)
Newtons
d)
Meters
10.
What is the formula for Gravitational Potential Energy?
a)
PE = m*g*h
b)
KE = 1/2m*v2
c)
W = F*d
d)
P = W/t
11.
What is the formula for Kinetic Energy?
a)
PE = m*g*h
b)
KE = 1/2m*v2
c)
W = F*d
d)
P = W/t
12.
a)
A is Potential, B is Kinetic
b)
A is Kinetic, B is Potential
c)
A is Power, B is Work
d)
A is Work, B is Power
13.
What is g on Earth?
a)
9.8 m/s/s
b)
9.8 m/s
c)
42 m*s
d)
42 m/s/s
14.
At the start of a ski jump, a skier begins at rest at the top of a hill. What types of energies are present?
a)
Kinetic
b)
Gravitational
c)
Kinetic & Gravitational
d)
Gravitational & Internal
16.
At the bottom of the hill, the skier jumps off of a ramp. The ramp causes the skier to _____.
a)
gain potential energy
b)
lose potential energy
c)
gain kinetic energy
d)
lose elastic energy
16.
At the bottom of the hill, the skier jumps off of a ramp. The ramp causes the skier to _____.
a)
gain potential energy
b)
lose potential energy
c)
gain kinetic energy
d)
lose elastic energy
17.
An 85kg man injures himself at the top of Camelback Mountain (peak height=390m). A helicopter is needed to airlift him out. If the helicopter hovers at 398m above ground level, calculate the work done by the helicopter as it lifts the man aboard.
a)
8 Joules
b)
80 Joules
c)
680 Joules
d)
6,800 Joules
18.
Bro A bench presses 145-lbs five times in 20 seconds.
Bro B bench presses 145-lbs five times in 10 seconds.
Bro B bench presses 145-lbs five times in 10 seconds.
a)
Bro A did more work.
b)
Bro B did more work.
c)
Both Bros did the same amount of work.
d)
Bro
19.
Bro A bench presses 145-lbs five times in 20 seconds.
Bro B bench presses 145-lbs five times in 10 seconds.
Bro B bench presses 145-lbs five times in 10 seconds.
a)
Bro A has more power
b)
Bro B has more power
c)
Both Bros have the same power
d)
Bro
20.
Which point along the roller coaster has the greatest velocity?
a)
A
b)
B
c)
C
d)
D
21.
Riders on Knott's Berry Farm's Supreme Scream are lifted at a constant velocity to the top of the tower before experiencing a freefall down. As they are being lifted, the ______of the riders increases.
a)
Kinetic Energy
b)
Elastic Potential Energy
c)
Chemical Potential Energy
d)
Gravitational Potential Energy
22.
In the ride "G-Force", riders are placed inside of a rotating pendulum. Throughout the ride, riders have a constant ____.
a)
Kinetic Energy only
b)
Gravitational Energy only
c)
Kinetic & Gravitational Energy
d)
Neither Kinetic nor Gravitational
23.
Which requires more work?
a)
Lifting a 5kg mass to a height of 1m
b)
Lifting a 10kg mass to a height of 50cm
c)
Both scenarios require equal work
24.
What is the kinetic energy of a 9.2kg book that has a speed of 5.5m/s?
a)
.5J
b)
9.2J
c)
25J
d)
139.2J
25.
True or false: when the distance an object moves is zero the work done on the object is also zero.
a)
True
b)
False
26.
Two cars are raised to the same elevation on service-station lifts. If one car is twice as massive as the other, how do their potential energies compare?
a)
Half of each other
b)
Double each other
c)
One-quarter of each other
d)
Four times each other
27.
Belly-Flop Bernie dives from atop a tall flagpole into a swimming pool below. His potential energy at the top is 10,000J. What is his kinetic energy when his potential energy reduces to 9.7J?
a)
9.81J
b)
10,000J
c)
9.7J
d)
9,990.3J
28.
True or false: work is a vector.
a)
True
b)
False
29.
Kinetic energy is the energy of an object that is due to the object's _____.
a)
inertia
b)
motion
c)
momentum
d)
position
30.
True or false: the net work done on a body is equal to its change in kinetic energy.
a)
True
b)
False
31.
The work-kinetic energy theorem says that the net work done by all the forces acting on an object is equal to the change in the object's _____.
a)
mechanical energy
b)
work
c)
momentum
d)
kinetic energy
32.
Potential energy is the energy associated with an object because of the _____, shape, or condition of the object.
a)
position
b)
momentum
c)
work
d)
velocity
33.
_____ potential energy is defined as the potential energy stored in the gravitational fields of interacting bodies.
a)
Magnetic
b)
Electrical
c)
Gravitational
34.
True or false: gravitational potential energy depends on height from a zero level.
a)
True
b)
False
35.
Mechanical energy is equal to these two types of energy added together.
a)
kinetic and potental
b)
kinetic and electrical
c)
elastic and potential
d)
electrical and heat
36.
True or false: energy conservation occurs even when acceleration varies.
a)
True
b)
False
37.
True or false: mechanical energy is conserved even in the presence of friction.
a)
True
b)
False
38.
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
39.
True or false: energy can change forms but can never be created or destroyed.
a)
True
b)
False
40.
True or false: objects in motion have kinetic energy because of their mass and speed.
a)
True
b)
False
41.
What is work?
a)
the use of force
b)
exert a force
c)
force applied to move an object
d)
moving an object
42.
How is work calculated?
a)
force/distance
b)
energy x distance
c)
force x distance
d)
energy/time
43.
What is energy?
a)
cause of force
b)
ability to do work
c)
direction of a force
d)
needs to be visible
44.
What does work transfer?
a)
force
b)
power
c)
energy
d)
gravity
45.
What is power?
a)
rate of force applied
b)
time/energy
c)
the strength of an object
d)
rate at which work is done
46.
If you push very hard on an object but it does not move, has work been done?
a)
Yes
b)
No
47.
The type of energy that is the amount of energy from the movement in particles is...
a)
thermal
b)
mechanical
c)
sound
48.
The type of energy transmitted through space in the form of electromagnetic waves is...
a)
thermal
b)
sound
c)
electromagnetic
49.
What type of energy is in this picture?
a)
Kinetic
b)
Potential
c)
Electromagnetic
50.
When plants convert the sun's energy into food, which type of energy does the sun energy become?
a)
kinetic
b)
chemical
c)
thermal
51.
1. What is the ability to do work?
a)
Energy
b)
Kinetic energy
c)
Potential energy
d)
Energy forms
52.
What is the energy of motion that depends on speed and mass?
a)
Energy
b)
Kinetic energy
c)
Potential energy
d)
Chemical energy
53.
What is the energy of position or shape that depends on weight and height, also called stored energy?
a)
Energy
b)
Kinetic energy
c)
Potential energy
d)
Sound energy
54.
What is the law that states that energy cannot be created or destroyed only transform form one energy to another?
a)
Law of Conservation of Energy
b)
Law of Gravity
c)
Law of Inertia
d)
None of these
55.
(2.4A) What is NOT a type of Potential Energy?
a)
Gravatational Potential Energy
b)
Thermal Energy
c)
Elastic Potential Energy
d)
Electrical Potential Energy
56.
(2.4B) What is the Law of Conservation of Energy?
a)
Energy can neither be created nor destroyed, but can be change from one form to another.
b)
Energy can be created and destroyed
c)
Energy can't be created but can be destroyed.
d)
Energy dissipates as thermal energy
57.
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
58.
When a pendulum swings, at which point is potential energy at its greatest?
a)
1
b)
2
c)
3
d)
4
59.
Energy can be _____________ or changed from one type to another.
a)
destroyed
b)
transferred
c)
created
d)
ignored
60.
Energy is the ability to do _____________ or cause change.
a)
work
b)
rest
c)
experiments
d)
science
61.
Tarzan is swinging through the jungle looking for Jane. He is constantly moving back and forth..his kinetic energy is being changed to
a)
electrical
b)
chemical
c)
potenital
d)
nuclear
62.
Which form of energy is produced by the splitting of the nucleus of an atom?
a)
solar
b)
nuclear
c)
chemical
d)
none
63.
A job is done slowly, and an identical job is done quickly. Both jobs require the same amount of ___, but different amounts of _____
a)
work, energy
b)
power, work
c)
work, power
d)
force, work
64.
During energy transformations, energy is never ___.
a)
released as heat
b)
used to increase an object's potential energy
c)
completely transformed
d)
created or destroyed
65.
In which of the following situations do your arms do work on books?
a)
holding a heavy stack of books while standing
b)
carrying a heavy stack of books
c)
dropping a stack of books onto a table
d)
picking up a pile of books from the floor
66.
Gasoline in a car tank (car is not on).
a)
Potential
b)
Kinetic
67.
A dry cell of a battery.
a)
Potential
b)
Kinetic
68.
The average kinetic energy in an object.
a)
convection
b)
temperature
c)
Heat
d)
radiation
69.
What type of energy do we get from our food?
a)
Chemical
b)
Dairy
c)
Electrical
d)
Nuclear
70.
How do you find mechanical energy?
a)
weight x hieght
b)
potential + kinetic
c)
energy + weight
d)
none of these
71.
What is friction?
a)
The study of matter
b)
A force that opposes motion
c)
energy sources from fossils
d)
all of the above
72.
What has to happen when a force is exerted on an object for work to be done?
a)
the object moves
b)
the object stays still
c)
the object is heavy
d)
none of these
73.
What type of energy represents the sum of the KE and PE that a moving object has?
a)
chemical energy
b)
total mechanical energy
c)
electromagnetic energy
d)
electrical energy
74.
What is the kinetic energy of a ball sitting on top of a hill?
a)
0 J
b)
less than 0 J
c)
more than 0 J
75.
Based on the formula for potential energy, what 2 variables influence PE the most?
a)
mass and height
b)
mass and velocity
c)
velocity and height
d)
velocity and mass
76.
Groot rescues Rocket from the bottom of a deep pit. Groot expends 1000 J of energy lifting Rocket who has a mass of 50 kg out of the pit. How deep is the pit?
a)
0.5 m
b)
2 m
c)
4 m
d)
10 m
77.
Peter Quill drops an infinity stone (mass = 5 kg) from a height of 10 m. What is the Ek of the stone just before it strikes the ground?
a)
4.9 J
b)
19.6 J
c)
245 J
d)
490 J
78.
How much work does Drax perform pushing Rocket in a cart 200 m with 100 N of force?
a)
2 J
b)
10,000 J
c)
20,000 J
d)
40,000 J
79.
How much work does Rocket perform using a quantum jump pump to lift 2,000 kg of liquid nitrogen to a vertical height of 20 m?
a)
98,000 J
b)
196,000 J
c)
392,000 J
d)
784,000 J
80.
The Eg of Peter Quill's ship the Milano positioned 10,000 m above the Earth is 2,500 J. What is the ship's Ek just as it lands?
a)
1,2500 J
b)
2,500 J
c)
5,000 J
d)
10,000 J
81.
Power is:
a)
How fast work is done.
b)
A force applied through a distance.
c)
Work out divided by work in multiplied by 100.
d)
Everything.
82.
If the velocity of Peter Quill's ship the Milano is doubled then the ship's Ek will be:
a)
Halved
b)
Doubled
c)
Tripled
d)
Quadrupled
83.
If Rocket (m = 50 kg) is thrown into the air by Gamora at a velocity of 20 m/s what is his Ek?
a)
500 J
b)
10,000 J
c)
20,000 J
d)
40,000 J
84.
What is the average power generated by Peter Quill aka Star Lord (m = 100 kg) running up a flight of stairs rising vertically 6 .0 m in 5.0 s?
a)
0.03 W
b)
817 W
c)
1176 W
d)
1993 W
85.
If both the mass and the velocity of an asteroid are doubled, the kinetic energy of the asteroid is increased by a factor of:
a)
2
b)
4
c)
8
d)
16
86.
A more powerful machine:
a)
takes longer to do work.
b)
does work in less time.
c)
has a greater ability to do work.
d)
decreases the workload.
Reset
