wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Work, Power, and Energy Review

Total questions: 65

Worksheet time: 3hrs 46mins

Name
Class
Date
1.

What is the unit for work? (check all that apply)

a)

J

b)

Nm

c)

kgm2/s2

d)

W

e)

kgm2/s3

2.
In which of these situation is negative work done on the rock?
a)
The work done by gravity as it falls
b)
The work done by gravity as you lift it up vertically
c)
The work done by your hand when you lift a rock vertically
d)
The work done on the rock when you push it horizontally
3.
An electric motor lifts an elevator 15m in 35 seconds by exerting an upward force of 20,000N. What is the power the motor produces in kilowatts?
a)
8571 kW
b)
8.571KW
c)
85.71kW
d)
0.8571kW
4.
Which of the following does not have stored energy?
a)
A stretched spring
b)
A battery
c)
A rock help up at a height of 10m
d)
A rolling ball
5.
The graph shows the force and displacement of an object that is being pushed. How much work is done to push the object 4m?
a)
8J
b)
16J
c)
24J
d)
64J
6.
The graph shows the force and displacement of an object that is being pushed. How much work is done to push the object 4m?
a)
8J
b)
16J
c)
24J
d)
64J
7.
How much work is done on a 100N box of toys that you support vertically while moving it horizontally 7m across the room?
a)
0J
b)
14.3J
c)
100J
d)
700J
8.
A 730N student climbs 12m up a flight of steps, at a constant velocity. he develops 300W of power during the climb. How much time did it take him to climb the steps?
a)
2.4s
b)
25s
c)
29s
d)
60s
9.
How much work does it take to lift a 23kg object a distance of 14m if it take 15 seconds to lift it up?
a)
210 J
b)
322 J
c)
345 J
d)
3156 J
10.
A rock falls from a cliff at a height of 200m to a cliff that is 150m above the ground. How fast is the rock moving when it strikes the lower cliff?
a)
31.3 m/s
b)
54.2 m/s
c)
98 m/s
d)
62.6 m/s
11.
At which point is potential energy greatest?
a)
W
b)
X
c)
Y
d)
Z
12.
At which point is kinetic energy greatest?
a)
W
b)
X
c)
Y
d)
Z
13.
A 40 kg crate is picked up by a crane to a height of 50m. The crate falls. What is the velocity of the crate just before it hits the ground?
a)
2000 Joules
b)
19,600 Joules
c)
19,600 m/s
d)
31.3 m/s
14.
When my velocity triples, my kinetic energy increases by ______ times.
a)
9
b)
 3 
c)
1.5
d)
4.5
15.
Suppose a moving car has 5000J of kinetic energy. If the car's speed doubles, how much kinetic energy will it have?
a)
1250 J
b)
2500 J
c)
10,000 J
d)
20,000J
16.
An engineer is asked to design a playground slide such that the speed a child reaches at the bottom does not exceed 5 m/s. Assuming the child starts from rest at the top, determine the maximum safe height for the slide?
a)
1.3 m
b)
2.8 m
c)
3.5 m
d)
0.50 m
17.
As a boulder rolls from the top of a hill to the bottom, how does its potential and kinetic energy change?
a)
Potential and kinetic energy both increase
b)
Potential increases and kinetic decreases
c)
Potential decreases and kinetic increases
d)
Potential and kinetic energy both decrease
18.
Conservation of energy requires that, in a closed system, which of the following is true?
a)
Initial mechanical energy > final mechanical energy
b)
Initial mechanical energy < final mechanical energy
c)
Initial mechanical energy = final mechanical energy
d)
Initial mechanical energy + final mechanical energy = 0
19.
A 2 kg object is thrown at 5 m/s. What is the balls kinetic energy?
a)
25 m/s
b)
50 m/s
c)
10 m/s
d)
5 m/s
20.

The unit used to measure Power is (check all that apply)

a)

W

b)

Nm

c)

J/s

d)

kgm2/s2

e)

kgm2/s3

21.
A 5000N block is lifted 10 m. How much work was done?
a)
50000 J
b)
5000 J
c)
500 J
d)
50 J
22.
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
23.
If 68 Joules were necessary to move a 4 Newton crate, how far was the crate moved?
a)
272 m
b)
17 m
c)
4.05 m
d)
272 cm 
24.
Which situation is work not done?
a)
lifting a 20 pound box off the floor
b)
holding a 20 pound box above the floor
c)
sliding a 20 pound box across the floor
d)
sliding a 20 pound box up an inclined plane
25.
How much work is done using a 60 watt light bulb for 1 hour?
a)
60 J
b)
216,000 J
c)
0.0167 J
d)
3600 J
26.
A set of pulleys is used to lift a piano weighing 1,000 newtons.  The piano lifted 3 meters in 60 seconds  How much power is used?
a)
16.67 watts
b)
50 watts
c)
3000 watts
d)
20,000 watts
27.
How much power is used if a force of 35 newtons is used to push a box a distance of 10 meters in 5 seconds?
a)
70 watts
b)
1750 watts
c)
350 watts
d)
15.5 watts
28.
Which point along the roller coaster has the greatest velocity?
a)
A
b)
B
c)
C
d)
D
29.

Bro A bench presses 145-lbs five times in 20 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

30.
A cheetah can run briefly with a speed of 31m/s.  Suppose a cheetah with a mass of 47 kg runs at this speed.  What is the cheetah’s kinetic energy?
a)
22583.5 J
b)
728.5 J
c)
1457 J
d)
0.75 J
31.
Two books of the same mass are on a bookcase.  One book is 10 meters above the floor and the other book 8 meters.  Which one has more potential energy?
a)
The book at 8 meters
b)
The potential energies are equal
c)
The book at 10 meters
d)
There is no way to determine this with out the mass of the books
32.
A moving object will eventually come to a stop due to friction because...
a)
All of the energy in the system was destroyed
b)
All of the energy in the system was transformed into thermal energy
c)
The system could not create enough energy to keep the object moving
d)
Friction does negative work that will increase the mechanical energy of the system
33.
A ball is rolling with a speed of 4.0m/s at the bottom of an inclined plane. What is the maximum height the ball can reach? 
a)
0.82 m
b)
0.20m
c)
8.0m
d)
7.94 m
34.
Which has greater potential energy, a book on a 3m high hill or a book that is one third as massive 9m high cliff
a)
the one on the hill
b)
the one on the cliff
c)
you cannot compare the two
d)
both have the same potential energy
35.
With the spring toy in lab we compressed a spring and stored 25J of potential energy. If there is no loss of energy due to heat, how much kinetic energy will the toy have once it has been released from the spring?
a)
12.5J
b)
25J
c)
50J
d)
5J
36.
A box is moved to a higher location. What is the potential energy of the box equal to?
a)
the power it takes to lift it
b)
the force it takes to lift it
c)
the weight of the box
d)
the work required to lift it
37.
Which of the following represents zero work?
a)
An apple falling to the ground
b)
Frictional force slowing a car
c)
A rocket leaving launched into space
d)
someone holding a box, while they walk 10m forward
38.
A car accelerates from 25m/s to 50m/s. Compare the final kinetic energy to the kinetic energy.
a)
The final kinetic energy is 4 times as great as the initial kinetic energy
b)
The final kinetic energy is half as great as the initial kinetic energy
c)
The final kinetic energy is 2 times as great as the initial kinetic energy
d)
The final kinetic energy is one-fourth as great as the initial kinetic energy
39.
An object experiences 10 J of work. If a force of 2 N is applied to it, what is the distance the object has gone?
a)
5 m
b)
5 m/sec
c)
5 N
d)
5 J
40.

What are the units of Force? (check all that apply)

a)

kg m/s

b)

kg m

c)

N

d)

kg m/s2

e)

J/s

41.
The gravitational potential energy stored between an object and Earth depends on 
a)
The object's speed and height. 
b)
The object's mass and speed. 
c)
the object's size and weight. 
d)
The object's height and weight. 
42.
Tommy carries his piano up the stairs doing 100 Joules of work. If he did this in 10 seconds, what is his power?
a)
62,50 Watts
b)
1000 Watts
c)
10 Watts
d)
6 Watts
43.
A box of 2N is pushed a distance of 32m. Which of the following is the correct amount of work done?
a)
64 J
b)
64 N
c)
64 W
d)
65 kg
44.
An electric motor lifts an elevator 23.0m in 42 seconds by exerting an upward force of 2.5x104N. What power does the motor produce in kilowatts?
a)
13,690 kW
b)
136.90 kW
c)
13.60 kW
d)
1.3690 kW
45.
Two students with the same mass walk up the same flight of stairs. Student A does it in 20 seconds, while student B does it in 30 seconds. Student A does ________amount of work and generates ________ power than Student B.
a)
the same; greater
b)
the same; less
c)
a greater; the same
d)
a greater; a greater
46.
Mechanical Energy is
a)
Potential energy only
b)
Kinetic energy only
c)
The total sum of the Potential and Kinetic energies
d)
The total sum of the Work done and the Potential and Kinetic Energies
47.

Which description matches the chart shown?

a)

A car is moving along a level roadway at a constant speed

b)

The driver hits the brakes and the car slows down from an illegal speed to within the speed limit along the level roadway

c)

The baseball player hits the infield dirt and slides to a stop

d)

The driver steps on the gas and the car accelerates from rest to a high speed along the level street

e)

A skydiver falls the last 1000 feet at a constant speed

48.

Which description matches the chart shown?

a)

A car is moving along a level roadway at a constant speed

b)

The driver hits the brakes and the car slows down from an illegal speed to within the speed limit along the level roadway

c)

The baseball player hits the infield dirt and slides to a stop

d)

The driver steps on the gas and the car accelerates from rest to a high speed along the level street

e)

A skydiver falls the last 1000 feet at a constant speed

49.

Which description matches the chart shown?

a)

A car is moving along a level roadway at a constant speed

b)

The driver hits the brakes and the car slows down from an illegal speed to within the speed limit along the level roadway

c)

The baseball player hits the infield dirt and slides to a stop

d)

The driver steps on the gas and the car accelerates from rest to a high speed along the level street

e)

A skydiver falls the last 1000 feet at a constant speed

50.

Which description matches the chart shown?

a)

A golf ball encounters some resistance as it rolls up the inclined putting green to a final stopping position

b)

The driver hits the brakes and the car slows down from an illegal speed to within the speed limit along the level roadway

c)

The baseball player hits the infield dirt and slides to a stop

d)

Starting from rest a car accelerates from the bottom of the hill to the top of the hill

e)

A skydiver falls the last 1000 feet at a constant speed

51.

Which description matches the chart shown?

a)

A golf ball encounters some resistance as it rolls up the inclined putting green to a final stopping position

b)

The driver hits the brakes and the car slows down from an illegal speed to within the speed limit along the level roadway

c)

The baseball player hits the infield dirt and slides to a stop

d)

Starting from rest a car accelerates from the bottom of the hill to the top of the hill

e)

A skydiver falls the last 1000 feet at a constant speed

52.

Which description matches the chart shown?

a)

A stationary cross country skiers uses her poles to help propel her from atop a 20 meter high hill down into a valley and back up on top of a 10 meter high hill. There is negligible friction.

b)

The driver hits the brakes and the car slows down from an illegal speed to within the speed limit along the level roadway

c)

A car is moving along a level roadway at a constant speed

d)

Starting from rest a car accelerates from the bottom of the hill to the top of the hill

e)

The ski lift lifts the riders from the bottom of the hill to the top of the hill at a constant speed

53.

Which description matches the chart shown?

a)

A stationary cross country skiers uses her poles to help propel her from atop a 20 meter high hill down into a valley and back up on top of a 10 meter high hill. There is negligible friction.

b)

A) A skydiver falls the last 1000 feet at a constant speed

c)

A car is moving along a level roadway at a constant speed

d)

Starting from rest a car accelerates from the bottom of the hill to the top of the hill

e)

The ski lift lifts the riders from the bottom of the hill to the top of the hill at a constant speed

54.

A ball is thrown upward with 300J of kinetic energy. The ball experiences air resistance (friction) on the way up and on the way down. Which statement is true about the initial kinetic energy of the ball when it is thrown and the final kinetic energy when it lands?

a)

The final kinetic energy is equal to the initial kinetic energy due to the conservation of energy

b)

The final kinetic energy is greater than the initial kinetic energy because the work done by friction is positive

c)

The final kinetic energy is less than the initial kinetic energy because the work done by friction is negative

d)

There is no way to determine which kinetic energy is greater since the direction of friction changes

55.

Mechanical Energy is equal to the

a)

Potential Energy at that location

b)

Kinetic Energy at that location

c)

Potential and Kinetic Energies at that location

56.

A ball is thrown with a speed of v0 from a height of h0. Which of the following do you not need to calculate the speed the ball reaches a final height hf

a)

The mass of the ball

b)

The initial speed of the ball

c)

The initial height of the ball

d)

The final height of the ball

57.
Describe the energy at Position B.
a)
High Potential
b)
Low Kinetic
c)
High Kinetic
d)
Equal Potential and Kinetic
58.
At which position would the roller coaster be transforming kinetic energy to potential energy?
a)
A to B
b)
B to C
c)
C to D
d)
No such transformation.
59.

Which two forces do NO work on the gold block?

a)

Fa

b)

Fg

c)

Ff

d)

Fn

60.

Three blocks are each pushed from rest for 10 meters with forces shown. Which block has the most kinetic energy after 10m of travel?

a)

A

b)

B

c)

C

d)

not enough information

61.

A force changes over time. During which section does that force do the largest magnitude of work?

a)

A

b)

B

c)

C

d)

D

62.

Which ball has the least kinetic energy?

a)

A

b)

B

c)

C

d)

all the same

63.

At its peak, a projectile has a velocity of 0 m/s

a)

True

b)

False

64.

A ball is thrown and follows the parabolic path shown above. Air friction is negligible. Point Q is the highest point on the path. Points P and R are the same height above the ground. Which of the following diagrams best shows the direction of the acceleration of the ball at point P?

a)
b)
c)
d)
e)
65.
The horizontal component of a projectile's velocity is:
a)
constant 
b)
a constant acceleration
c)
always -9.8 m/s2 down

Similar Resources on Wayground

Final Exam S1 Review 2024-2025

70 questions

Final Exam S1 Review 2024-2025

quiz

Worksheet

•

9th - 12th Grade

Review For Midterm

65 questions

Review For Midterm

quiz

Worksheet

•

9th - 11th Grade

Early Motion Extra

61 questions

Early Motion Extra

quiz

Worksheet

•

9th - 12th Grade

Electrical Circuits

63 questions

Electrical Circuits

quiz

Worksheet

•

9th Grade - University

Projectiles and Circular Motion

65 questions

Projectiles and Circular Motion

quiz

Worksheet

•

9th - 12th Grade

Bài tập điện tích

65 questions

Bài tập điện tích

quiz

Worksheet

•

11th Grade

REMEDIAL PH 1 DINAMIKA ROTASI

63 questions

REMEDIAL PH 1 DINAMIKA ROTASI

quiz

Worksheet

•

11th Grade

KIỂM TRA KIẾN THỨC VẬT LÝ 10

65 questions

KIỂM TRA KIẾN THỨC VẬT LÝ 10

quiz

Worksheet

•

10th Grade - University