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WorksheetsChapter 12 Review
Total questions: 78
Worksheet time: 1hrs 15mins
Name
Class
Date
1.
8 N to the left , and 4 N to the right. Find the net force. Is this balanced
a)
12 N Right No
b)
4 N Left No
c)
12 N Right Yes
d)
4 N Left Yes
2.
If there are two forces going in the same direction how would you find the net force?
a)
Subtract
b)
Add
c)
Neither
d)
Multiply
3.
What is force?
a)
A push exerted on an object
b)
A push or pull exerted on an object
c)
A pull exerted on an object
d)
Nothing
4.
The force that pulls things toward earth.
a)
Speed
b)
Gravity
5.
Which one is balanced?
a)
top
b)
bottom
c)
both
6.
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
7.
What is the standard unit force is measured in?
a)
N
b)
lbs
c)
g
d)
m/s
8.
What is Sliding Friction?
a)
Opposes submarines in the water and airplanes in the air
b)
Opposes the dirrection of an 0bject as it slides over a surface
c)
None of the above
d)
Change in shape the point of rolling contrast because of friction
9.
How many types of frictions are there?
a)
2
b)
4
c)
10
d)
6
10.
Define Inertia
a)
How fast an object travels
b)
A push or pull
c)
An objects resistance to a change in its motion
d)
A force that brings a body towards to center of mass of an object
11.
The SI unit for measuring distance is
a)
Meter
b)
Newton
c)
Meters per second
d)
Meters per second squared
12.
Define Fluid Friction
a)
Friction that occurs when a solid pushes a liquid or a gas aside
b)
The friction of stationary objects. You must use more force to move an object experiencing this kind of friction
c)
Friction that occurs when a solid rolls across a surface
d)
Friction caused by two objects sliding against each other
13.
Define Rolling Friction
a)
Friction caused by two objects sliding against each other
b)
Friction that occurs when a solid rolls across a surface
c)
Friction that occurs when a solid pushes a liquid aside
d)
The friction of stationary objects. You must use more force to move an object experiencing this kind of friction
14.
Define Static Friction
a)
Friction caused by two objects sliding against each other
b)
Friction that occurs when a solid rolls across a surface
c)
The friction of stationary objects. You must use more force to move an object experiencing this kind of friction
d)
Friction that occurs when a solid pushes a liquid aside
15.
Frictions acts in the direction _____to the direction of the object's motion.
a)
Perpendicular
b)
Parallel
c)
Opposite
d)
Diagonal
16.
What happens to the object when the forces are not balanced?
a)
Accelerates
b)
Stays
c)
Nothing
d)
None of the above
17.
Newton's First Law of Motion, Inertia, is dependent on
a)
the speed of an object
b)
the gravitational attraction on an object
c)
the elevation of an object
d)
the mass of an object
18.
In order for an object to move,
a)
the object must have net forces of zero
b)
the object must have net forces greater than zero
c)
the object must have a gravitational attraction less than its mass
d)
the force must be greater than its mass
19.
F=ma
a)
Newton's
1st
Law of Motion
1st
Law of Motion
b)
Newton's
2nd
Law of Motion
2nd
Law of Motion
c)
Newton's
3rd
Law of Motion
3rd
Law of Motion
20.
For every action, there is an equal and opposite reaction.
a)
Newton's
1st
Law of Motion
1st
Law of Motion
b)
Newton's
2nd
Law of Motion
2nd
Law of Motion
c)
Newton's
3rd
Law of Motion
3rd
Law of Motion
21.
A rocket in outer space continues to move.
a)
Newton's
1st
Law of Motion
1st
Law of Motion
b)
Newton's
2nd
Law of Motion
2nd
Law of Motion
c)
Newton's
3rd
Law of Motion
3rd
Law of Motion
22.
A skater pushes another skater forward, but the one pushing moves backwards.
a)
Newton's
1st
Law of Motion
1st
Law of Motion
b)
Newton's
2nd
Law of Motion
2nd
Law of Motion
c)
Newton's
3rd
Law of Motion
3rd
Law of Motion
23.
Determine the accelerations that result when a 12-N net force is applied to a 3-kg object.
a)
3 m/s
b)
4 ft/s
c)
13 m/s
d)
4 m/s
24.
What is the formula for force?
a)
F=M/A
b)
F=MA
c)
F=AX
d)
what is force?
25.
How many Laws does Newton have?
a)
4
b)
6
c)
1
d)
3
26.
If an object was accelerating at 10 m/s^2, and a force of 10 newtons was required to accelerate it, what was the object's mass?
a)
1 kilogram
b)
10 kilograms
c)
2 kilograms
d)
5 kilograms
27.
You push on a tree with 20 N of force. If the tree doesn't move, the tree is pushing back on you with _____of force.
a)
20N
b)
40N
c)
10N
d)
70N
28.
Which of the following is the weak nuclear force associated?
a)
nuclear decay
b)
lightning
c)
ocean tides
d)
static cling
29.
which universal force acts only on the protons and neutrons in a nucleus?
a)
gravitational
b)
electric
c)
magnetic
d)
strong nuclear
30.
which of the following universal forces are the weakest?
a)
electric
b)
gravitational
c)
magnetic
d)
strong nuclear
31.
projectile motion is caused by ____
a)
The downward force of gravity
b)
An initial forward velocity
c)
A final vertical velocity
d)
The downward force of gravity and an initial forward velocity
32.
The gravitational force between two objects increases as mass_____
a)
decreases or distance decreases
b)
decreases or distance increase
c)
increases or distance decreases
d)
increases or distance increases
33.
How much time does it take for a bird flying at a speed of 45 kilometers per hour to travel a distance of 1,800 kilometers?
a)
46 hours
b)
23 hours
c)
38 hours
d)
40 hours
34.
A motorcycle traveling at 25m/s accelerates at a rate of 7.0 m/s/s for 6.0s. What is the final speed of the motorcycle?
a)
67 m/s
b)
69 m/s
c)
55 m/s
d)
56 m/s
35.
A parachute on a race car opens and changes the speed of the car from 85 m/s to 45 m/s in a period of 4.5s. What is the acceleration?
a)
8.89 m/s/s
b)
7.86 m/s/s
c)
-7.86 m/s/s
d)
-8.89 m/s/s
36.
What is the acceleration of a baseball if it has a mass of .5kg and hits the catcher with a force of 25N?
a)
50 m/s/s
b)
56 m/s/s
c)
40.3 m/s/s
d)
52.67 m/s/s
37.
what is the momentum of a 40kg child moving 5 meters in 2 seconds?
a)
100 kg x m/s
b)
88 kg x m/s
c)
75g x m/s
d)
56 kg x m/s
38.
How will this object move?
a)
It won't move.
b)
It will move to the right.
c)
It will move to the left.
d)
It will move in both directions.
39.
The sum of all forces acting on an object and direction
a)
Contact Force
b)
Balanced Force
c)
Unbalanced Force
d)
Net Force
40.
Are forces balanced or unbalanced when a car is moving at a constant speed in a straight line?
a)
Balanced
b)
Unbalanced
41.
When mass increases then gravity
a)
Decreases
b)
Increases
c)
Stays the same
42.
What type of force?
a)
Magnetic
b)
Gravitational
c)
Applied
d)
Normal
43.
Each of the four universal forces is affected by the distance between the particles of matter
a)
True
b)
False
44.
Which of the following is NOT one of the four universal forces?
a)
Electromagnetic
b)
Rotational
c)
Strong nuclear
d)
Gravitational
e)
Weak nuclear
45.
What is the weakest universal force, but is so much a part of your life that you probably take it for granted?
a)
Atoms
b)
Electricity
c)
Magnetic
d)
Gravity
46.
The greater the ________ of the objects, the greater is the gravitational force.
a)
Distance
b)
Mass
c)
Speed
d)
Rotation
47.
Jupiter has about 317 times more mass than Earth. What can you infer from this fact?
a)
That Jupiter’s gravitational force is much weaker than on Earth’s gravitational force.
b)
That Jupiter’s gravitational force is much stronger than Earth’s gravitational force.
c)
That Jupiter’s and Earth’s gravitational forces are equal.
d)
Mass has no effect on the gravitational force between two objects
48.
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
49.
The equation to calculate momentum is
a)
p=mv
b)
p=1/2mv2
c)
p=mgh
d)
p=mg
50.
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
51.
Momentum is a ____________________ quantity
a)
science
b)
scalar
c)
vector
d)
energy
52.
How can a tennis ball and a bowling ball have the same momentum?
a)
have the same speed
b)
have different speeds
c)
one is moving backwards
d)
they can't
53.
Which of the following has the greatest momentum?
a)
a scurrying cockroach
b)
a parked semi-truck
c)
more information is needed
54.
If a net force is acting on an object,
a)
its velocity must be constant
b)
its velocity must be changing
c)
its mass must be changing
d)
its acceleration = 0
55.
What happens to the speed of the wagon as the rain collects inside of it?
a)
it decreases
b)
it remains constant
c)
it increases
56.
What is Newton's First Law known as? The Law of
a)
Friction
b)
Mass
c)
Inertia
d)
Gravity
57.
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
58.
What is the formula for force?
a)
F=M/A
b)
F=MA
c)
F=AX
d)
what is force?
59.
Calculate the net force of the object in the image shown.
a)
20N
b)
35N
c)
5N
d)
25N
60.
If you double the mass of an object with the same force apply on it, the acceleration will
a)
double
b)
cut in half
c)
the same
d)
zero
61.
What kind(s) of objects have inertia?
a)
all objects with mass
b)
only objects at rest
c)
only objects in motion
d)
only objects whose motion is being changed
62.
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
63.
After a cannonball 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 required to keep it moving.
64.
The acceleration produced by a net force on an object is
a)
inversely proportional to the mass of the object.
b)
directly proportional to the magnitude of the net force.
c)
in the same direction as the net force.
d)
all of the above
65.
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
66.
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
67.
A bike accelerates at 10 m/s2 when a force of 50N is applied. What is the mass of the bike and its rider?
a)
25 kg
b)
200 kg
c)
20 kg
d)
5 kg
68.
Which of Newton's Laws is illustrated with a large mass and a small mass accelerating?
a)
1st Law, the Law of Inertia.
b)
2nd Law, the Law of Acceleration
c)
3rd Law, the Law of Action Reaction
d)
The Law of Conservation of Mass
69.
Which of Newton's laws are illustrated with a rocket launch?
a)
1st Law, the Law of Inertia.
b)
2nd Law, the Law of Acceleration.
c)
3rd Law, the Law of Action Reaction
d)
The Law of Conservation of Mass
70.
A 2.5 kg ball moving at 5 m/s collides with a 2.5 kg stationary ball in a perfectly elastic collision. What is the velocity of the second ball after the collision?
a)
5 m/s
b)
2.5 m/s
c)
10 m/s
d)
7.5 m/s
71.
What is the net force?
a)
20 N
b)
0 N
c)
400 N
d)
40 N
72.
Forces that have a net force of zero Newtons
a)
Balanced force
b)
Unbalanced force
73.
Calculate the Net Force.
a)
60N, Left
b)
40N, Right
c)
0N
d)
60N, Right
74.
What is gravity?
a)
A force
b)
Energy
c)
A push
d)
All of them
75.
A child has a mass of 30 Kg on Earth. If the gravity on Moon is one sixth that of the Earth what is the mass of the child on Moon?
a)
30 Kg
b)
180 Kg
c)
5 Kg
d)
0 Kg
76.
If an object mass =30 Kg on the Earth, what would be it's weight on Earth?
a)
30 N
b)
300 kg
c)
3000N
d)
300 N
77.
The force of gravity on Jupiter is a little more than 2 times the gravitational force on Earth. If an object has a mass of 50 kg and a weight of 490 N on Earth, what would be the object's approximate mass and weight on Jupiter?
a)
50 kg and 490 N
b)
100 kg and 490 N
c)
50 kg and 980 N
d)
100 kg and 980 N
78.
What is missing?
a)
D
b)
N
c)
W
d)
L
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