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WorksheetsMomentum, Work, Kinetic Energy, and Potential Energy
Total questions: 58
Worksheet time: 1hrs 23mins
Name
Class
Date
1.
Which of the following is the equation for Work?
a)
W = Fd
b)
W = F-d
c)
W = F+d
d)
W = F/d
2.
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
3.
What dependent variables (meaning their values change) are included in Potential Energy?
a)
Mass
b)
Mass and Gravity
c)
Mass and Height
d)
Height and Gravity
4.
A Falling Object has what kind of energy?
a)
Kinetic Energy
b)
Potential Energy
c)
Kinetic Energy and Potential Energy
d)
Neither
5.
A llama bumps into it's mama. What kind of collision is this?
a)
Elastic
b)
Inelastic
c)
Plastic
d)
Fantastic
6.
Which of the following is the correct equation for momentum?
a)
p = mv
b)
p = (1/2)mv^2
c)
p = m-v
d)
p = m+v
7.
An object has a mass of 20 kg
and a speed of 10 m/sec.
What is the object's momentum?
and a speed of 10 m/sec.
What is the object's momentum?
a)
2000 m/sec
b)
2000 kg m/sec
c)
200 m/sec
d)
200 kg m/sec
8.
If Jack and Jill went up a hill....And Jack fell down and broke his crown, what type of collision would have had to occur?
a)
Inelastic
b)
Elastic
c)
Plastic
d)
Fantastic
9.
Which of the following is the correct equation for Kinetic Energy (KE)?
a)
1/2 mv²
b)
mv²
c)
1/2 mv
d)
mgh
10.
Friday, we spent time rolling multiple balls across the desk. What were our known variables? (what you did not calculate)
a)
mass, time, distance
b)
mass, velocity, KE
c)
mass, time, KE
d)
mass, time, velocity
11.
True or False: Weight is a Force
a)
True
b)
False
12.
True or False: Gravity acts in many different directions
a)
True
b)
False
13.
True or False: The Mass of an object does not change.
a)
True
b)
False
14.
True or False: The Weight of an Object depends on gravity.
a)
True
b)
False
15.
What is the difference between Mass and Weight?
a)
Weight is a vector, and mass is a scaler
b)
Weight and Mass are the same
c)
Mass depends on gravity
d)
Weight depends on mass
16.
When a car crashes into a barrier, the front end of the car is crushing and absorbing _____
a)
Acceleration
b)
Energy
c)
Momentum
d)
Speed
17.
A body at rest stays at rest unless acted upon by an external force---This is Newton’s ____ Law
a)
1st
b)
2nd
c)
3rd
d)
4th
18.
Momentum is _____________ in motion
a)
Speed
b)
Velocity
c)
Inertia
d)
Acceleration
19.
Motion related energy is called ________________
a)
Potential
b)
Kinetic
c)
Momentum
d)
Force
20.
If a truck has a mass of 1000 kg, and it is going at a rate of 20 m/sec, what is the truck’s momentum?
a)
20000 kg m/sec
b)
2000 kg m/sec
c)
200 kg m/sec
d)
20 kg m/sec
21.
If a girl has a momentum of 50 kg m/sec and she runs at a speed of 10 m/sec, what is her mass?
a)
500 kg
b)
5 kg
c)
0.5 kg
d)
50 kg
22.
Which is the correct equation for momentum?
a)
1/2 mv
b)
1/2 mv²
c)
mv²
d)
mv
23.
What are the correct units of momentum?
a)
kg m
b)
kg m/sec
c)
kg m/sec²
d)
kg sec²
24.
Work has what kind of units?
a)
N
b)
kg m/sec
c)
J
d)
N sec
25.
What is Impulse?
a)
Force
b)
Force x time
c)
Force x time²
26.
The change in momentum is equal to.....
a)
A force
b)
The impulse
c)
Force and mass
27.
Which type of Collision refers to objects hitting and being deformed after colliding?
a)
Elastic
b)
Plastic
c)
Inelastic
d)
Fantastic
28.
Energy is not lost in which kind of collision?
a)
Elastic
b)
Fantastic
c)
Plastic
d)
Inelastic
29.
The equation for Potential Energy is __________
a)
PE = mgh
b)
PE = mg+h
c)
PE = mg-h
d)
PE= mg/h
30.
If a girl has a mass of 20 kg, and is at a height of 30 m. What is her potential energy?
a)
-490 J
b)
-5880 J
c)
-643 J
d)
-19 J
31.
What does "g" stand for?
a)
Gravity
b)
The Acceleration due to gravity
c)
How much force gravity has
32.
The Potential Energy of a 20-kg mass at a height of 2 meters
a)
392 J
b)
390 J
c)
400 J
d)
410 J
33.
Find the Kinetic Energy of a 20 kg mass moving at a speed of 2 m/sec
a)
40 J
b)
40 m/sec
c)
40 kg
d)
50 J
34.
What is potential energy measured in?
a)
N
b)
J
c)
kg m
d)
N sec
35.
What are the units of Force?
a)
kg m/sec
b)
kg m
c)
N
d)
N sec
36.
Which object listed below has the greatest momentum?
a)
A 0.05 kg object rolling at 0.2 m/s.
b)
A 0.15 kg object rolling at 2 m/s.
c)
A 0.15 kg object rolling at 1 m/s
d)
A 0.4 kg object rolling at 2 m/s.
37.
A 324 Ns impulse was applied to an object and caused a change in its velocity of 9 m/s. What is the mass of the object?
a)
4 kg
b)
36 kg
c)
88 kg
d)
2,916 kg
38.
The momentum of an object depends upon the object's ___________&_____________.
a)
size and shape
b)
mass and speed
c)
mass and veloctiy
d)
mass and energy
39.
Momentum is a ____________________ quantity
a)
science
b)
scalar
c)
vector
d)
energy
40.
Determine the momentum of 1000-kg car moving northward at 20 m/s.........
a)
20000 N
b)
20000 Joules
c)
20000 Kg * m/s
d)
20000 kg * m/s north
41.
A(n) _________________ causes and is equal to a change in momentum
a)
impulse
b)
force
c)
joule
d)
watt
42.
The definition of momentum is
a)
Mass in Motion
b)
The size of an object
c)
The velocity of an object
d)
A comparison between two objects
43.
In any collision (crash) the ______ is ALWAYS constant
a)
Total Momentum
b)
total speed
c)
total Velocity
d)
Energy
44.
What is the net force?
a)
40 N left
b)
0 N Balalnced
c)
400 N right
d)
40 N right
45.
What is Newton's Third Law?
a)
Object in motion stays in motion and an object at rest stays at rest unless acted on by a outside force
b)
Force = mass x acceleration
c)
For every action there is an equal and opposite reaction
46.
A 1200 kg car has a velocity of 43 m/s. The momentum of the car is
a)
51600 kg m/s
b)
27.9 kg m/s
c)
1243 kg m/s
d)
0.0358 kg m/s
47.
A runner has a momentum of 670 kg m/s and is traveling at a velocity of 9 m/s. What is his mass?
a)
74.4 kg
b)
6030 kg
c)
0.0134 kg
d)
80 kg
48.
The total momentum does not change unless outside forces act on the objects
a)
True
b)
False
49.
Missy Diwater, the former platform diver for the Ringling Brother's Circus, had a kinetic energy of 5625 J just prior to hitting the bucket of water. If Missy's mass is 50 kg, then what is her velocity?
a)
15 m
b)
112.5 m/s
c)
15 m/s
d)
112.5 m
50.
At which point is potential energy greatest
a)
W
b)
X
c)
Y
d)
Z
51.
Kinetic and Potential Energy are the two types of energy that relate to..
a)
Change
b)
Friction
c)
Motion
d)
Density
52.
At which point is kinetic energy greatest
a)
W
b)
X
c)
Y
d)
Z
53.
Which example best represents kinetic energy
a)
streched rubber band
b)
glass of milk
c)
A computer
d)
A flying kite
54.
In an elastic collision, what happens to reduce the total mechanical energy of the system?
a)
sometimes KE changes to chemical energy
b)
sometimes KE changes to gravitational potential energy
c)
sometimes KE changes to elastic potental energy
d)
sometimes KE changes to thermal and sound energy
55.
Which of the following would produce the greatest increase in the KE of a moving object?
a)
doubling is mass
b)
halving its mass
c)
halving its velocity
d)
doubling its velocity
56.
How much work would have to be done on a truck with a KE of 2 x 104 J to reduce its KE by half
a)
1 X 102 J
b)
4 X 104 J
c)
2 X 102 J
d)
1 X 104 J
57.
What is an example of kinetic energy? (2.4A)
a)
baseball being thrown
b)
a ball that is not in motion
58.
Is it possible for energy to transform into a new kind of energy? (2.4B)
a)
yes
b)
no
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