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1st Semester Benchmark Review

Total questions: 175

Worksheet time: 4hrs 11mins

Name
Class
Date
1.

The study of matter and energy and the interactions between them.

a)

Physics

b)

Chemistry

c)

Biology

d)

Earth Science

2.

A test model of product that allows engineers to see if their design works the way they expected is a/an

a)

prototype

b)

experiment

c)

variable

d)

none of these

3.

A test model of product that allows engineers to see if their design works the way they expected is a/an

a)

prototype

b)

experiment

c)

variable

d)

none of these

4.

The use of tools, machines, materials, and processes to meet human needs is

a)

research

b)

apps

c)

data

d)

technology

5.

Data displayed on the vertical (y) axis; what is measured/counted in an experiment is the

a)

independent variable

b)

dependent variable

c)

prototype

d)

constraints

6.

Data displayed on the horizontal (x) axis; what is changed on purpose in an experiment is the

a)

rules

b)

independent variable

c)

dependent variable

d)

model

7.

Graph used when showing how each group of data relates to all of the data; also called a pie graph is a/an

a)

line graph

b)

bar graph

c)

circle graph

d)

none of these

8.

A graph used to show continuous change over time is a/an

a)

bar graph

b)

circle graph

c)

pie graph

d)

line graph

9.

A graph used to display and compare data in a number of separate categories is a/an

a)

bar graph

b)

circle graph

c)

pie graph

d)

line graph

10.

The number of times something happens is called the

a)

frequencies

b)

frequency

c)

constraints

d)

both 1 and 2

11.

The facts, figures, and other evidence gathered through observations and experimentation is the

a)

frequencies

b)

observations

c)

laws

d)

data

12.

1. If the range of your data is 36 units, how high should the numbers go on your y axis?

a)

You must have 30 units on the y axis

b)

You must have units divided into 3's on the y axis

c)

You need to have at least 36 numbers on your y axis

d)

You need to have as many units as you do on the x axis

13.

What information goes on the y- axis?

a)

The indedpendent variable. The factor that is manipulated or changed in order to test the effect of the change on another variable- in other words, the thing that "I" the scientist will change or test.

b)

The dependent variable. It is units of measurement for the data being gathered.

c)

Different categories to be tested

d)

Names of the people conducting the experiment

14.

What is an experiment?

a)

Observing carefully and recording movements of live animals

b)

Practice with chemicals and potions

c)

An organized procedure to study something under controlled conditions

d)

Building a model to demonstrate a theory

15.

1. What is the difference between a theory and a law?

a)

A law describes, a theory explains

b)

A law explains, a theory describes

c)

A law can change, theories can't

d)

A law has to be accepted by 100 scientists, a theory does not

16.

1. What is an independent variable?

a)

The results that we measure

b)

The numbers that include the units of measurement

c)

The factor that is manipulated or changed in order to test the effect of the change on another variable- in other words, the thing that the scientist will change or test

d)

The part of the experiment that the scientist must perform alone

17.
A possible explanation to a problem that has not yet been tested. 
a)
data
b)
theory
c)
hypothesis
d)
fact
18.
What step does every scientific experiment begin with?
a)
hypothesis
b)
question/problem
c)
procedures
d)
conclusion
19.
The summary at the end of an experiment that explains the results. 
a)
conclusion
b)
procedures
c)
materials
d)
responding variable
20.
A testable answer to a scientific question
a)
Question
b)
Observation
c)
Hypothesis
d)
Experiment
21.
A series of steps used by scientists to solve a problem or answer a question. 
a)
scientific method
b)
recipe
c)
data collection
d)
metric system
22.

Which is NOT a step in the scientific method?

a)

state a problem

b)

Form a theory

c)

analyze data

d)

Form a hypothesis

23.
Which of these contains steps in the right order?
a)
Ask a question, state your hypothesis, research, experiment, analyze, make a conclusion
b)
State your hypothesis, ask a question, research, experiment, analyze, make a conclusion
c)
Ask a question, research, state your hypothesis, experiment, analyze, make a conclusion
d)
State your hypothesis, ask a question, research, make a conclusion, experiment, analyze
24.

Which happens first?

a)

make a hypothesis

b)

make a plan

c)

ask a question/make an observation

d)

draw conclusions

25.
All factors that can change in an experiment.
a)
variable
b)
data
c)
conclusion
d)
result
26.
This variable in an experiment is the one being changed by the scientist. 
a)
dependent variable
b)
independent variable
c)
data
d)
control group
27.
An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, the independent variable is ...
a)
The type of plant
b)
The amount of sunlight
c)
The type of music
d)
The type of liquid
28.
Dependent variable means
a)
the scientist controls what to test
b)
educated guess
c)
ask a question
d)
what is being measured
29.
Dependent variable means
a)
the scientist controls what to test
b)
educated guess
c)
ask a question
d)
what is being measured
30.
If you increase the amount of spinach you eat, then you will increase the iron in your blood. 
What's the dependent variable?
a)
increase the amount of iron in your blood
b)
spinach you eat
31.
If I ride my bike to school instead of walking, then I will get to school faster. What is the dependent variable?
a)
True
b)
How fast you get to school
c)
Riding a bike or walking
d)
False
32.
Will a construction paper air plane fly faster than an airplane made from notebook paper? Choose the best hypothesis.
a)
If I make a paper airplane from notebook paper, then it will fly faster than construction paper.
b)
Yes.
c)
No.
d)
I think the construction paper air plane will fly faster.
33.
If I study for my scientific method test, then I will have a better test score. What is the dependent variable?
a)
Scientific Method
b)
Studying
c)
Independent variable
d)
Test score
34.
If I read this question carefully, then I will answer it correctly. What is the independent variable?
a)
I hope so
b)
Yes
c)
Reading or not reading carefully
d)
Likelihood of a correct answer
35.
You use the scientific method all the time to solve everyday problems.
a)
True
b)
False
36.
This is the group that we will compare our experimental group to. This group stays "normal."
a)
Control Group
b)
Experimental Group
c)
 Normal Group
d)
Weird Group
37.
In a controlled experiment, how many variables can be worked with at a time? 
a)
one
b)
none
c)
two or more
d)
how ever many makes sense.
38.
How many people have two or less books in their desk?
a)
4
b)
5
c)
6
d)
7
39.
How many people have four books in their desks?
a)
2
b)
3
c)
4
d)
5
40.

The vertical axis of a line graph is called the __________.

a)

slope

b)

line of best fit

c)

x-axis

d)

y-axis

41.

The horizontal axis of a line graph is called the __________.

a)

slope

b)

line of best fit

c)

x-axis

d)

y-axis

42.

What type of graph would you make to show how many of your classmates were born in each month of the year?

a)

line

b)

bar

c)

circle

d)

scatter plot

43.
What is the independent variable on the graph (x-axis)?
a)
Metro Bicycle Shop Weekly Sales
b)
Bicycles Sold
c)
Types of Bicycles
44.
What is the title of the graph?
a)
Metro Bicycle Shop Weekly Sales
b)
Bicycles Sold
c)
Types of Bicycles
45.

Theory or Law? _________ of Thermodynamics: Matter can never be created or destroyed. Tells what happens with matter.

a)

Theory

b)

Law

46.

Theory or law: Atomic _____ of matter: all matter is made up of atoms. Explains why matter behaves a certain way.

a)

Theory

b)

Law

47.

Theory or Law? Tectonic ________ of Geology: the surface of the earth is made of tectonic plates, which move slowly. Explains why mountains are formed, earthquakes happen, etc.

a)

Theory

b)

Law

48.

A scientific theory cannot be modified (changed)

a)

True

b)

False

49.

Scientific laws often include a mathematical relationship observed in nature.

a)

True

b)

False

50.

Which statement below correctly identifies the difference between laws and theories?

a)

Laws describe phenomena, while theories explain why and how phenomena exist

b)

Laws are a statement of fact, while theories are a statement of opinion

c)

Laws explain why phenomena exist, while theories explain how

d)

Laws are a prediction of phenomena, while theories are an explanation

51.
If lil Houdeshell weighs 378 Newtons on Earth and 63 Newtons on the moon, this means that her...
a)
mass is greater on earth.
b)
mass is greater on the moon.
c)
inertia is greater on earth and less on the moon.
d)
mass is the same on the moon and the earth.
52.
If lil Houdeshell weighs 378 Newtons on Earth and 63 Newtons on the moon, this means that her...
a)
mass is greater on earth.
b)
mass is greater on the moon.
c)
inertia is greater on earth and less on the moon.
d)
mass is the same on the moon and the earth.
53.
When a heavy football player and a light one run into each other, who exerts more force?
a)
The heavy one
b)
The light one
c)
They are equal
d)
there is no such thing as force
54.
What is Newton's First Law
a)
F=ma
b)
Every action has an equal and opposite reaction
c)
An object at rest stays at rest, an object in motion stays in motion. 
d)
Friction 
55.
If a ball of cheese is fired into frictionless space, the amount of force needed to keep it going equals
a)
twice the force with which it was fired
b)
the same amount of force with which it was fired
c)
1/2 the force with which it was fired
d)
zero, since no force is requires to keep it moving. 
56.
Which one needs a greater net force to move, a kilogram of feathers or a kilogram of iron? 
a)
feathers 
b)
iron
c)
same
d)
depends on their friction
57.
Which one needs a greater net force to move, a kilogram of feathers or a kilogram of iron? 
a)
feathers 
b)
iron
c)
same
d)
depends on their friction
58.
One object has twice as much mass as another object. The first object also has also twice as much...
a)
velocity
b)
gravitational acceleration
c)
inertia
d)
all of these
59.
Which best explains why we are able to accelerate forward when starting to run?
a)
As one leg moves backward, it provides an equal and opposite force for the other foot to move forward.
b)
No acceleration takes place. Runners are always at a fixed velocity.
c)
The striking foot pushes backward against the ground. The friction with the ground provides an equal and opposite force forward.
d)
The runner's upper body quickly leans forward, causing the entire body to begin accelerating forward
60.
When a large truck pushes a small car with a given force, the small car is applying an equal and opposite force on the truck.
a)
True
b)
False
61.
What is Newton's First Law
a)
F=ma
b)
Every action has an equal and opposite reaction
c)
An object at rest stays at rest, an object in motion stays in motion. 
d)
Friction 
62.
What is Newton's First Law
a)
F=ma
b)
Every action has an equal and opposite reaction
c)
An object at rest stays at rest, an object in motion stays in motion. 
d)
Friction 
63.
What pulls a ball back to earth?
a)
Gas
b)
Gravity
c)
Friction
d)
Molecules
64.
What is the name for a push or pull?
a)
A movement
b)
A force
c)
Speed
d)
Density
65.
A baseball player bats a ball with a force of 1,000 N. The ball exerts a reaction force (without any additional forces action on it) against the bat of...
a)
Less than 1, 000 N
b)
1,000 N
c)
More than 1,000 N
66.

Newton's Third Law is also known as...

a)

The Law of Inertia

b)

The Law of Acceleration

c)

The Law of Action Reaction

67.
Newton's Third Law States...
a)
Objects in motion stay in motion and objects at rest stay at rest
b)
Force is equal to mass times acceleration
c)
For each action there is an equal and opposite reaction
68.
The gravitational pull is greater between two objects that
a)
have greater masses.
b)
have rougher surfaces.
c)
are farther apart.
d)
are moving at greater speed
69.
When a cannon fires a cannonball we observe Newton's third law. Which force is the reaction force?
a)
The cannon moving forward
b)
The cannonball moving forward
c)
The cannon moving backward
d)
The cannonball moving backward
70.
What is the difference between mass and weight?
a)
mass is how much matter is in an object, and weight is the gravitational pull on that object
b)
mass and weight are the same
c)
weight affects how much mass is in an object
d)
weight is determined by how many atoms make up an object
71.
What is the difference between mass and weight?
a)
mass is how much matter is in an object, and weight is the gravitational pull on that object
b)
mass and weight are the same
c)
weight affects how much mass is in an object
d)
weight is determined by how many atoms make up an object
72.
A pencil is being pulled to a table with 2 N of force from gravity. The table provides 2N of force back on the pencil. Which statement is true? 
a)
The net force on the pencil is 4N 
b)
The net forces on the pencil are balanced 
c)
The force of gravity is stronger than the force of the table 
d)
The pencil should be moving
73.
Which is an example of Newton's third law about action and reaction forces? 
a)
A rocket takes off from the ground
b)
A book slides forward when the car stops
c)
A heavier ball falls at the same speed as a lighter ball 
d)
A vehicle will slow down as it curves
74.
With unbalanced forces, the object will move in the direction of the _______ force.
a)
larger 
b)
smaller 
c)
equal 
75.
A magician pulls a tablecloth out from under dishes and glasses on a table without disturbing them.
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
76.
Pushing a child on a swing is easier than pushing an adult on the same swing, because the adult has more inertia.
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
77.
This person bought coffee and put it on the seat next to them. If they stopped quickly and the coffee spilled which law would that represent?
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
78.
"For every action, there is an equal and opposite reaction."
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
d)
Newton's 4th Law
79.
In the picture, the blocks are flying out of the truck based on which of Newton's laws?
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
d)
Newton's 6th Law
80.

Which law explains why when you put a book on a table the table pushes on the book?

a)

3rd law

b)

4th law

c)

1st law

d)

2nd law

81.

According to Newton’s second law of motion, force equals mass times ________.

a)

velocity

b)

inertia

c)

acceleration

d)

mass

82.
F=ma
a)
Newton's
1st
Law of Motion
b)
Newton's
2nd
Law of Motion
c)
Newton's
3rd
Law of Motion
83.
A roller coasters accelerates from an initial velocity of of 6.0 m/s to a final velocity of 70 m/s over 4 seconds.  What's the acceleration?
a)
24 m/s2
b)
18 m/s2
c)
16 m/s2
d)
16 m/s
84.
A dog runs with an initial speed of 7.5 m/s on a waxed floor.  It slides to a stop in 15 seconds.  What is the acceleration?
a)
-7.5 m/s
b)
-7.5 m/s2
c)
-0.5 m/s2
d)
7.5 mi//hr
85.
A dog runs with an initial speed of 7.5 m/s on a waxed floor.  It slides to a stop in 15 seconds.  What is the acceleration?
a)
-7.5 m/s
b)
-7.5 m/s2
c)
-0.5 m/s2
d)
7.5 mi//hr
86.
The picture of the position vs. time graph shows an object that is...
a)
accelerating/speeding up
b)
moving at a constant speed 
c)
not moving 
d)
accelerating/slowing down. 
87.
A car starts from rest at a stop light and reaches 20 m/s in 3.5 s. Determine the acceleration of the car.
a)
2.2m/s2
b)
7.0m/s2
c)
5.7m/s2
d)
70m/s2
88.
In each of the following cases, determine where the car has no acceleration ?
a)
A car shortly after a stoplight turns green.
b)
A car approaching a red light
c)
A car with the cruise control set at 80 km/h
d)
A car turning a curve at a constant speed
89.
Which graph represents zero acceleration (constant velocity)?
a)
A
b)
B
c)
C
d)
D
90.

force that opposes the motion of objects that move through the air

a)

gravity

b)

air resistance

c)

friction

d)

net force

91.

The ____________of an object consists of its speed and direction

a)

velocity

b)

average speed

c)

instantaneous speed

d)

displacement

92.
The net force of the following diagram is
a)
20 N
b)
Moving to the left
c)
Balanced forces
d)
160 N
93.
Which graph best represents a graph of a car travelling down a freeway at a CONSTANT speed?
a)
A
b)
B
c)
C
d)
D
94.
If forces acting on an object are balanced, then there _________ be a change in motion
a)
will
b)
will not
95.
The snail is traveling at 5 cm/hr. This is an example of
a)
speed
b)
forces
c)
acceleration
d)
velocity
96.
a change in position is defined as
a)
force
b)
motion
c)
speed
d)
acceleration
97.
What force ultimately slows the roller coaster to a stop?
a)
Applied
b)
Normal
c)
Friction
d)
Magnetic
98.
What does a curved line on a distance-time graph show?
a)
That the speed is changing. 
b)
That the object is not moving. 
c)
That the object is constant. 
99.
The force that two surfaces exert on each other when they rub against each other.
a)
Friction
b)
Gravity
c)
Weight
d)
Force
100.
What are UNEQUAL forces acting on an object in opposite directions that cause motion?
a)
Balanced Forces
b)
Unbalanced Forces
c)
Gravity
101.
What are 3 ways to describe MOTION? (We have talked about this for 5 weeks!!!!!!!!!)
a)
Gravity, Magnetism, Friction
b)
Speed, Direction, Position
c)
Rough, Smooth, Lubricants
102.
An airplane is travelling North through the sky at a constant speed when turbulence causes it to take a different route, changing its direction. Explain the forces at work on this plane.
a)
Unbalanced, because the plane is moving forward, not backwards
b)
Unbalanced, because the speed is constant and there is a change in direction
c)
Balanced, because the plane is not falling to a lower altitude
d)
Unbalanced, because the plane is in motion
103.
What is the unit of measurement for force?
a)
AMP
b)
Seconds
c)
Newtons
d)
Miles
104.

Calculate the net force and direction.

a)

7

b)

7N

c)

7N to the left

d)

7N to the right

105.
The speedometer on your car tells you
a)
average velocity
b)
instantaneous velocity
c)
average speed
d)
instantaneous speed
106.
What is this graph representing?
a)
Constant Speed
b)
Acceleration (speeding up)
c)
Deceleration (slowing down)
d)
No motion
107.
A golf ball accelerates off a tee at 15m/s2, changing its velocity from 0m/s to 50 m/s down the fairway. How long did it take the golf ball to accelerate?
a)
750 seconds
b)
35 seconds
c)
0.3 seconds
d)
3.3 seconds
108.
Acceleration is defined as the CHANGE in 
a)
time it takes for one place to move to another place. 
b)
velocity of an object.
c)
distance divided by the time interval 
d)
velocity divided by the time interval 
109.
When are you undergoing an acceleration in a car? 
a)
speed up
b)
slow down
c)
make turns
d)
All of the above 
110.
A dog runs with an initial speed of 7.5 m/s on a waxed floor.  It slides to a stop in 15 seconds.  What is the acceleration?
a)
-7.5 m/s
b)
-7.5 m/s2
c)
-0.5 m/s2
d)
7.5 mi//hr
111.
In practice B of the figure, which displacement is the horizontal component?
a)
30 km, East
b)
30 km, West
c)
40 km, North
d)
40 km, South
112.
Is this a scalar quantity or a vector quantity?
Wind blowing at 20 knots
a)
Scalar
b)
Vector
113.
If a car moves 12 km North, 19 km East, and 12 km South, what is its displacement?
a)
12 km
b)
19 km, East
c)
31 km
d)
43 km, East
114.
A hiker walks 5 kilometers due north and then 7 kilometers due east. What is the magnitude of the resultant vector?
a)
2 km
b)
8.6 km
c)
12 km
d)
12.6 km
115.

A student drives his car 6.0 km North, then 6.0 km to the East. Finally, 2.0 km to the north. What is the magnitude of the overall displacement of the student?

a)

14 km

b)

8.4 km

c)

10 km

d)

7.2 km

116.
What is the density of an object having a mass of 8.0 g and a volume of 25 cm3?
a)
0.32 g/cm3
b)
3.1 g/cm3
c)
200 g/cm3
d)
2.0 g/cm3
117.
How many estimated digits should there be when reading a measurement from a piece of lab equipment?
a)
0
b)
1
c)
2
d)
3
118.
2.5 kilgrams = _____ grams
a)
2500 g
b)
250 g
c)
25,000 g
d)
25 g
119.
A student determined the density of aluminum by averaging the results of three density calculations. Each value was different, but the average was equal to the accepted value for aluminum’s density. The results of this investigation are best described as
a)
accurate, but not precise.
b)
precise, but not accurate.
c)
both precise and accurate.
d)
neither precise nor accurate.
120.
John filled a graduated cylinder with 23 mL of water. Once he placed a key in the cylinder the water rose to 37 mL. What is the volume of the key?
a)
13 mL
b)
14mL
c)
7mL
d)
37 mL
121.

What is the purpose of this tool?

a)

to measure liquids, not exact

b)

used to stir

c)

to measure exact amounts of liquid

d)

used to find mass

122.
If an eraser is 25 millimeters long, how many centimeters long is it?
a)
2
b)
2.5
c)
25
d)
250
123.

A sample of bismuth has a mass of 343 g and a volume of 35.0 cm3. What is the density of bismuth? ( D=mvD=\frac{m}{v}  )

a)

0.102 g/cm3

b)

9.80 g/cm3

c)

378 g/cm3

d)

1.20 ´ 104 g/cm3

124.

Which of these is not an SI base unit?

a)

meter

b)

pound

c)

kelvin

d)

ampere

125.

The measurement 0.0265 g, rounded off to two significant figures, would be

a)

0.026 g.

b)

0.027 g.

c)

0.03 g.

d)

0.030 g.

126.

The number of significant figures in the measurement 170.040 km is

a)

three

b)

four

c)

five

d)

six

127.

The dimensions of rectangular solid are measured to be 1.27 cm, 1.3 cm, and 2.5 cm. The volume should be recorded as

a)

4.128 cm3.

b)

4.12 cm3.

c)

4.13 cm3.

d)

4.1 cm3.

128.

Expressed in scientific notation, 0.0930 m is

a)

93 X 10-3 m.

b)

9.3 X 10-3 m.

c)

9.30 X 10-2 m.

d)

9.30 X 10-4 m.

129.

Samples with masses of 0.12 g, 1.8 g, and 0.562 g are mixed together. The combined mass of the three samples, expressed to the correct number of significant figures, should be recorded as

a)

2.4 g.

b)

2.48 g.

c)

2.482 g.

d)

2.5 g.

130.

Which type of data is based on numerical observations?

a)

Qualitative

b)

Hypothetical

c)

Scientific

d)

Quantitative

131.

Which unit expresses a measurement of density?

a)

g/cm3

b)

cm2

c)

cm/mL

d)

L/kg

132.

How would you convert 50,000 g into a mass in kilograms (kg)?

a)

Divide by 100

b)

Divide by 1,000

c)

Multiple by 100

d)

Multiply by 1,000

133.

How is the measurement 73,400 cm expressed in scientific notation?

a)

734 x 102 cm

b)

7.34 x 104 cm

c)

7 x 101 cm

d)

7.34 x 105 cm

134.

A scientists records the color and texture of a plants leaves while conducting an experiment. This data would be...

a)

qualitative

b)

quantitative

135.

What is the density of a metal cube if its mass is 1.75 kg and its volume is 200 cm3? (Hint: what do you need to convert kg to?)

a)

1.14 g/cm3

b)

8.75 g/cm3

c)

0.0875 g/cm3

d)

11.4 g/cm3

136.

How is the measurement 0.00045 g expressed in scientific notation?

a)

4.5 x 10-5 g

b)

45 x 10-5 g

c)

4.5 x 10-4 g

d)

45 x10-4 g

137.

400 grams =____kilograms

a)

0.4kg

b)

4kg

c)

40kg

d)

40,000kg

138.

1 Metre = ______cm

a)

100

b)

10

c)

1

d)

1000

139.
How many significant figures: 216 m
a)
1
b)
2
c)
3
d)
0
140.
How many significant figures: 2016 m
a)
1
b)
2
c)
3
d)
4
141.
How many significant figures: 153.0 mL
a)
1
b)
2
c)
3
d)
4
142.
How many significant figures: 0.012 km
a)
1
b)
2
c)
3
d)
4
143.
How many significant figures: 100.000 cL
a)
1
b)
3
c)
5
d)
6
144.
How many significant figures: 0.001 g
a)
4
b)
3
c)
2
d)
1
145.
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
146.
Which has more momentum: a car stopped at a red light or a bike moving at 15 mph?
a)
car
b)
bike
c)
they are equal
d)
cannot determine using the info provided
147.
Momentum is a ____________________ quantity
a)
science
b)
scalar
c)
vector
d)
energy
148.
The impulse is ______ the change in momentum
a)
Greater than
b)
Equal to
c)
less than
d)
always double
149.
Which of the following has the greatest momentum? 
a)
a scurrying cockroach
b)
a parked semi-truck
c)
more information is needed
150.
When the speed of an object is doubled, its momentum
a)
remains unchanged in accord with the conservation of momentum.
b)
doubles
c)
quadruples
d)
decreases
151.
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.
152.
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.
153.
A 0.250 kg cart moving at 0.400 m/s has how much momentum?
a)
0.1 kg-m/s
b)
1 kg-m/s
c)
10 kg-m/s
d)
100 kg-m/s
154.
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
155.
A 9 kg blob moving at 5 m/s collides and sticks to a second blob with a mass of 5 kg. If the two bobs stick together, what will the velocity of the two blobs move at?
a)
3.57 m/s
b)
3.2 m/s
c)
10.0  m/s
d)
9.0  m/s
156.
A runner has a momentum of 720 kg m/s and is traveling at a velocity of 5 m/s. What is his mass?
a)
14.4 kg
b)
1400 kg
c)
144 kg
d)
360 kg
157.
A runner has a momentum of 720 kg m/s and is traveling at a velocity of 5 m/s. What is his mass?
a)
14.4 kg
b)
1400 kg
c)
144 kg
d)
360 kg
158.
An open cart on a level surface is rolling without frictional loss through a vertical downpour of rain. As the cart rolls, an appreciable amount of rainwater accumulates in the cart. The speed of the cart will
a)
increase because of conservation of mechanical energy
b)
decrease because of conservation of momentum
c)
decrease because of conservation of mechanical energy
d)
remain the same because the raindrops are falling perpendicular to the direction of the cart's motion
159.

Which of the following has the MOST momentum?

a)

rolling ping-pong ball

b)

rolling bowling ball

c)

rolling soccer ball

d)

rolling basketball

160.

If an object has a momentum of 40 kgm/s and a mass of 60 kg, what is it's velocity?

a)

2400 m/s

b)

1.5 m/s

c)

240 m/s

d)

.67 m/s

161.

If an object has a velocity of 15 m/s and a momentum of 30 m/s, what is its mass?

a)

450 m/s

b)

2 m/s

c)

4,500 m/s

d)

.5 m/s

162.

If an object has a mass of 20 kg and a velocity of 4 m/s, what is the momentum of the object?

a)

80 kgm/s

b)

4 kgm/s

c)

5 kgm/s

d)

.2 kgm/s

163.

An object has a mass of 5 kg, a displacement of 5 m, and a time of 25 s, what is its momentum?

a)

1 kgm/s

b)

750 kgm/s

c)

25 kgm/s

d)

625 kgm/s

164.
The recoil speed of a rifle is much less than the exit velocity of a bullet because...
a)
the rifle experiences a smaller force
b)
the rifle experiences a smaller change in momentum
c)
the rifle has a much greater mass
d)
the rifle does not obey the laws of physics
165.
Both students experience the same ____
a)
force of impact
b)
time of impact
c)
change in momentum
d)
all of the above
166.

A car is of mass 15kg is travelling east at a velocity of 3m/s. the value of its momentum is:

a)

30kg.m.s-1

b)

45kg.m.s-1

c)

18kg.m.s-1

d)

5kg.m.s-1

167.
A 2 kg cart has a momentum of 10 kg m/s. What is its velocity?
a)
22 m/s
b)
.2 m/s
c)
5.0 m/s
d)
20 m/s
168.

a bat strikes a 0.05 kg baseball so that its velocity changes by +30 m/s in 0.1 s. With what average force was the ball struck?

a)

+15 N

b)

-15 N

c)

+300 N

d)

-300 N

e)

+150 N

169.

A 5 N force is applied to a 3 kg ball to change its velocity from +9 m/s to +3 m/s. The impulse on the ball is ______ N s.

a)

-2.5

b)

-10

c)

-18

d)

-45

170.
Softer landings tend to
a)
increase impact force
b)
increase force
c)
increase collision time
d)
increase change in momentum
171.
The difference between a car hitting a wall vs. a car hitting a hay stack is
a)
the Impulse on the car hitting the wall is greater
b)
the change in momentum of the car hitting the wall is greater
c)
the force on the car hitting the hay stack is greater
d)
the collision time of the car hitting the hay stack is greater
172.
The units for Impulse are
a)
N/s
b)
N.s
c)
N
d)
m/s
173.
Cart A is pulled with a 2 Newton force for 2 seconds, and Cart B is pulled with a 1 Newton force for 3 seconds.  Which cart experiences the greatest impulse?
a)
Cart B
b)
Cart A
c)
they are the same
174.
The purpose of crumble zones on a car is to
a)
decrease time of impact.
b)
increase force of impact.
c)
increase the time of impact.
d)
decrease the impulse during impact.
175.
The velocity of a 975-kg car is changed from 12.0 m/s to 27.0 m/s in 15s by an external, constant force. What is the magnitude of the force? 
a)
9.75×102 N
b)
1.46×104 N
c)
9.75×103 N
d)
975 kg·m/s