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Newton's 2nd and 3rd Law

Total questions: 154

Worksheet time: 39hrs 30mins

Name
Class
Date
1.
Two asteroids exert a gravitational force, F, on each other. Some time later, the asteroids are now three times as far from each other as before. Which of the following represents the gravitational force at this distance? 
a)
F/3
b)
F/2
c)
F/6
d)
F/9
2.
What states that "every object in the universe attracts every other object"?
a)
Law of Universal Gravitation
b)
Newton's First Law of Motion
c)
My mother
d)
Inertia & gravity
3.
Force of gravity is inversely proportional to
a)
Mass
b)
Weight
c)
Distance
d)
Time
4.
If Earth's mass was cut in half, what would happen to your mass?
a)
increase because gravitational force increases
b)
decrease because gravitational force decreases
c)
decrease because gravitational force increases
d)
nothing, mass is not affected by gravitational force
5.

Calculate the gravitational force between two objects when they are 0.750m apart. Each object has a mass of 5.00kg.

a)

2.96x10-7N

b)

3.00x10-6N

c)

2.22x10-9N

d)

2.23x10-8N

6.
Two objects are attracted to each other with 36 N of gravitational force.
What would the force between them be if the distance between them were doubled?
a)
9
b)
18
c)
72
d)
144
7.
What is the Universal law of gravitation equation? 
a)
G=F ⋅ m⋅m2/r2
b)
F=G ⋅ m⋅m2/(r)2
c)
F=G ⋅ r2/m⋅m2
d)
G=F ⋅ r2/m⋅m2
8.
The law of universal gravitation is credited to whom?
a)
Einstein
b)
Galileo
c)
Darwin
d)
Newton
9.
Two factors effecting the magnitude of the force of gravity between 2 objects are...
a)
mass and distance 
b)
mass and matter
c)
distance and weight 
d)
weight and mass
10.
Gravity attracts all objects towards one another.
a)
False
b)
True
c)
It depends
11.

What is the gravitational force between two identical 50,000 kg asteroids whose centers of mass are separated by 1000 m?

a)

2500 N

b)

3.3 x 10-12 N

c)

1.67 x 10-4 N

d)

1.67 x 10-7 N

12.

Two spherical objects have masses of 8000 kg and 1500 kg. Their centers are separated by a distance of 1.5 m. Find the gravitational attraction between them

a)

5.4 X 10-4 N

b)

1.2 X 107 N

c)

3.6 X 10-4 N

d)

5.33 N

13.
Complete the following statement: The farther away two planets are the _______ the gravitational force between them.
a)
more
b)
same
c)
dosen't matter
d)
less
14.
Gravity is the force objects put on each other because of their ______.
a)
Mass
b)
Friendliness
c)
Acceleration
d)
Speed
15.
What happens to the force between two charged objects if you triple the magnitude of one charge? 
a)
1/3X
b)
3X
c)
1/9X
d)
9X
16.
What happens to the force between two charged objects when you double the distance between them?
a)
2X
b)
1/2X
c)
4X
d)
1/4X
17.

Which configuration will result in the greatest gravitational force?

a)

small masses far apart

b)

large masses far apart

c)

small masses close together

d)

large masses close together

18.
What is the SI unit used to measure force? 
a)
pounds 
b)
grams 
c)
newtons 
d)
friction
19.
Gravity attracts all objects towards one another.
a)
False
b)
True
c)
It depends
20.
Any object with mass has gravity.
a)
True
b)
Sometimes
c)
False
d)
Never
21.
As distance between two objects increase the pull of gravity 
a)
Increases
b)
Decreases
c)
Stays the same
22.
The force of gravity acting on an object is the object's ______.
a)
mass
b)
matter
c)
weight 
d)
friction 
23.
The law of universal gravitation is credited to whom?
a)
Einstein
b)
Galileo
c)
Darwin
d)
Newton
24.
The amount of matter in an object is 
a)
pressure
b)
weight
c)
mass
d)
force
25.
Which of the following never changes no matter where in the universe?
a)
weight
b)
force
c)
mass
d)
pounds
26.
A person would weigh less on on the Moon than on the Earth because . . .
a)
Moon has more mass, and therefore more gravity
b)
Moon has less mass, and therefore more gravity
c)
Moon has more mass, and therefore less gravity
d)
Moon has less mass and therefore less gravity
27.
Two factors effecting the magnitude of the force of gravity between 2 objects are...
a)
mass and distance 
b)
mass and matter
c)
distance and weight 
d)
weight and mass
28.
Gravity attracts all objects towards one another.
a)
False
b)
True
c)
It depends
29.
If Earth's mass was cut in half, what would happen to your mass?
a)
increase because gravitational force increases
b)
decrease because gravitational force decreases
c)
decrease because gravitational force increases
d)
nothing, mass is not affected by gravitational force
30.
Every object in the universe attracts every other object.
a)
True
b)
False
31.
If Earth's mass was cut in half, what would happen to your weight?
a)
Increase because gravitational force increases
b)
decrease because gravitational force decreases
c)
decrease because gravitational force increases
d)
nothing, weight is not affected by gravitational force
32.
What does this tool measure?
a)
weight
b)
meters
c)
mass
d)
force
33.
What does this tool measure?
a)
weight
b)
meters
c)
mass
d)
force
34.
What unit does the United States use to measure force?
a)
Ounces
b)
Newtons
c)
Grams
d)
Pounds
35.
Is the force of gravity acting on the bag of potatoes a contact or non-contact force?
a)
contact force
b)
non-contact force
36.
Is the force of gravity on the diver a push or a pull?
a)
push
b)
pull
37.
The relationship between the mass of an object and its weight on Earth is constant.
a)
True
b)
False
38.

What does free fall mean in physics?

a)

It means we only consider gravity acting on the object and we ignore air resistance.

b)

It means we consider all forces acting on a falling object, including air resistance and gravity.

c)

It means an object is falling with no acceleration.

d)

It means an object is falling with no forces acting on it.

39.

During free fall, what kind of motion should all objects have?

a)

acceleration

b)

constant speed

c)

something else

40.

What is Newton's 2nd Law?

a)

Every action has an equal and opposite reaction

b)

An object at rest stays at rest, an object in motion stays in motion.

c)

F = ma

d)

Friction

41.

If the man pushes with an equal amount of force, which object will accelerate more?

a)

Car because it has more mass

b)

Lawnmower because it has less mass

c)

Car because it has less mass

d)

Lawnmower because it has more mass

42.

What unit do we measure force in?

a)

Kilometer/hr

b)

Joules

c)

Seconds

d)

Newtons

43.

What is force?

a)

A push on an object

b)

A pull on an object

c)

A push or pull on an object

44.
The larger the mass you have the _____ force you need to change its motion.
a)
more
b)
less
45.
A force of 90N is applied to each cart below, which one will accelerate the fastest?
a)
Cart 1
b)
Cart 2
c)
Cart 3 
d)
Cart 4
46.
Two students are in a baseball game. The first student hits a ball very hard and it has a greater acceleration than the second student who bunts the ball lightly.
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
47.
Why would one ball travel a greater distance than the other when pushed with the same amount of force?
a)
Different sizes
b)
Different weights
c)
Different masses
d)
Different forces
48.
Acceleration is a change in...
a)
Inertia
b)
Gravity
c)
Velocity
d)
Distance
49.
Which shopping cart will have more acceleration?  
a)
The empty shopping cart
b)
The shopping cart that's full
c)
They will be the same
50.
Will it take more force to push an empty shopping cart or a shopping cart that is full?
a)
The empty shopping cart
b)
The full shopping cart
c)
They will take the same amount of force
51.

Newton’s law states that for every action, there is an ________ reaction.

a)

unequal and opposite

b)

equal and similar

c)

stronger and opposite

d)

equal and opposite

52.

When a small car pushes a big truck, the truck applies an equal and opposite force on the car.

a)

False

b)

True

53.

When a cannon fires a cannonball we observe Newton's third law. Which is the reaction force?

a)

The cannon moving forward

b)

The cannon moving backwards

c)

The cannonball moving backwards

d)

The cannonball moving forward

54.

How is this an example of Newton’s Third law?

a)

Only the ball is using the head

b)

They are both exerting an equal force on each other

c)

Only the head is pushing the ball

55.

When a heavy football player and a light one run into each other, who exerts more force

a)

The light one

b)

Their force are equal

c)

The heavy one

56.
A person steps out of the boat and onto the dock.  As the person moves forward onto the dock, the boat moves backward.  Which statement best describes the backward motion of the boat as the person steps forward?
a)
For every action there is an equal and opposite reaction.
b)
Every mass exerts a force on every other mass.
c)
An object at rest tends to stay at rest.
d)
Friction opposes the motion of an object.
57.

A baseball bat hits a baseball with a force of 100 Newtons. What is the force and its direction exerted by the ball on the bat?

a)

100 Newtons, same direction

b)

100 Newtons, opposite direction

c)

200 Newtons, opposite direction

d)

200 Newtons, same direction

58.
A bus hits a bug and the bug splatters on the windshield, which force is greater?
a)
The Bus
b)
The Bug
c)
They're the same
d)
Gravity acting on the bus
59.

Which object has no acceleration?

a)

A stapler on a table.

b)

A car moving at a constant speed in one direction.

c)

A satellite orbiting Earth.

d)

A bike turning a corner.

60.

Two people are skateboarding. If person 1 has a larger mass than person 2 and person 1 pushes person 2, how much would this affect their movement?

a)

Mass will have no affect.

b)

They will accelerate backwards the same.

c)

Person 1 will accelerate more, but both will move.

d)

They will both accelerate back, but person 2 will move more.

61.

When a person falls out of a tree, what kind of force is gravity?

a)

A balanced force.

b)

An unbalanced force.

c)

An inertial force.

62.

When force __________, acceleration _______________

a)

increase, decrease

b)

decrease, increase

c)

increase, increase

d)

decrease, decrease

63.

Two objects are acted on by the same unbalanced force. Object 1 accelerates two times faster than object 2. What can you determine about the mass of objects 1 and 2?

a)

Object 1 has slightly less mass than object 2.

b)

Both 1 and 2 have the same mass.

c)

Object 2 has about two times more mass than object 1.

d)

Object 1 has about 2 times more mass than object 2.

64.

A semi truck and a Volkswagen (small car) traveling at the same speed have a head on collision. Which statement is correct?

a)

The impact force is greater on the Volkswagen.

b)

The impact force is greater on the semi truck.

c)

The impact force is less on the semi truck.

d)

The impact force is equal for both.

65.

A baseball bat hits a baseball with a force of 100 Newtons. What is the force and its direction exerted by the ball on the bat?

a)

100 Newtons, same direction

b)

100 Newtons, opposite direction

c)

200 Newtons, opposite direction

d)

200 Newtons, same direction

66.

The nozzle of a rocket is pointed downward so that as fuel is ignited, the exhaust pushes downward. Why is this arrangement necessary for a rocket to function properly?

a)

The rocket is protected from the heat of the exhaust.

b)

Burned fuel can be collected on the ground.

c)

As fuel is combusted, the rocket pushes the gases backward and the gases push the rocket forward.

d)

This allows the rocket to be steered properly.

67.

This is always equal and opposite to the action force

a)

Motion

b)

Collide

c)

Force

d)

Newton's 3rd Law

68.

The illustration shows the forces in Newtons (N) acting on three different blocks. Which blocks will move under these conditions?

a)

Blocks 1 and 2

b)

Blocks 2 and 3

c)

Blocks 1, 2, and 3

d)

Blocks 1 and 3

69.

A push or pull that can change an object’s motion

a)

Force

b)

Motion

c)

Reference Frame

d)

Direction

70.

Students attached both ends of a long wire to the poles of a battery and wrapped the wire around a spoon. In this arrangement, the spoon is able to pick up five paper clips. The students wrap more wire around the spoon and want to determine if the strength of the magnetic force has increased. Which of the following observations would indicate that wrapping more wire has increased the strength of the electromagnet?

a)

More wire was needed to wrap around the spoon.

b)

The spoon now picks up seven paper clips.

c)

Eventually the battery runs out of energy.

d)

The ends of the wire must touch the battery's poles.

71.

The tendency to pull other objects toward it

a)

Magnitude

b)

Attraction

c)

Repulsive

d)

Current

72.

An astronaut way out in space is considered to be “weightless" This is because–

a)

his mass is so small relative to the earth that gravity doesn't affect him.

b)

gravitational force decreases greatly over long distances.

c)

gravitational force pushes objects away from each other at long distances.

d)

objects far away from the earth have less mass.

73.

Which of the following does not affect the gravitational force between the earth and the sun?

a)

The mass of the earth

b)

The mass of the sun

c)

The distance between the earth and the sun

d)

The net electrical charge of the earth

74.

The force between two masses

a)

Gravitational force

b)

Force

c)

Mass

d)

Interacting objects

75.

Which of the following graphs shows how the mass of an object affects the amount of force needed to move it?

a)

A

b)

B

c)

C

d)

D

76.
Momentum is a ____________________ quantity
a)
science
b)
scalar
c)
vector
d)
energy
77.

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

78.
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
79.
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
80.
The equation to calculate momentum is
a)
p=mv
b)
p=1/2mv2
c)
p=mgh
d)
p=mg
81.
In any collision (crash) the ______ is ALWAYS constant
a)
Total Momentum
b)
total speed
c)
total Velocity
d)
Energy
82.
What is the net force?
a)
40 N left
b)
0 N Balalnced
c)
400 N right
d)
40 N right
83.
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
84.
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
85.
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.
86.
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
87.
A 2 kg cart has a momentum of 16 kg m/s. What is its velocity?
a)
8 m/s
b)
32 m/s
c)
0.125 m/s
d)
18 m/s
88.
What are the units of Force?
a)
kg m/sec
b)
kg m
c)
N
d)
N sec
89.
The total momentum before a collision is _________ the total momentum after a collision.
a)
equal to 
b)
less than 
c)
more than
d)
It depends on the type of collision
90.
Both mass and velocity are _______________ proportional to momentum.
a)
Directly
b)
Inversely
91.
Which of the following has the least amount of momentum?
a)
An ant walking along the ground
b)
An ant at rest
c)
An elephant walking
d)
An elephant running
92.
Which of the following images has more momentum?
a)
Object A
b)
Object B 
c)
They are the same
93.
If two objects have the same mass, then the faster moving object has ____________ momentum.
a)
more 
b)
less
c)
the same
94.
20 N is the
a)
mass
b)
weight
c)
force
d)
acceleration 
95.
45 m/s2 is the... 
a)
Mass
b)
Force 
c)
Acceleration
d)
weight
96.
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
97.
The total momentum before a collision is _________ the total momentum after a collision.
a)
equal to 
b)
less than 
c)
more than
d)
It depends on the type of collision
98.
Momentum is a ____________________ quantity
a)
science
b)
scalar
c)
vector
d)
energy
99.
This picture is an example of ____________
a)
Elastic Collision
b)
Inelastic collision
100.
This picture is an example of ____________
a)
Elastic Collision
b)
Inelastic collision
101.
Collisions can be ____________or ___________.
a)
fast or slow
b)
far or near
c)
elastic or inelastic
d)
none of the above
102.
Jorge noticed a collision outside the coffee shop where two cars collided and stuck together.  What type of collision did he observe?
a)
Elastic
b)
Inelastic
c)
Completely inelastic
d)
none
103.

Which of the following has the greatest momentum?

a)

a scurrying cockroach

b)

a parked semi-truck

c)

more information is needed

104.

Why does a semi truck have more momentum than a car if they are both traveling at 60kph?

a)

Truck is more massive

b)

Truck is less massive

c)

Car is moving faster

d)

Car is more massive

105.

If a momentum car is moving at 2 kg m/s and crashes into a stationary momentum car, how much momentum would transfer over to the stationary car?

a)

all of the momentum

b)

half of the momentum

c)

a little bit of the momentum

d)

zero momentum

106.

Which would have more momentum between a train moving at 0 kph and a bug flying at 0.5 kph?

a)

Bug

b)

Train

c)

They are the same

107.

Determine the momentum of 1000-kg car moving northward at 20 m/s.........

a)

20,000 N

b)

20,000 Joules

c)

20,000 Kg * m/s

d)

20,000 kg * m/s north

108.
The equation to calculate momentum is
a)
p=mv
b)
p=1/2mv2
c)
p=mgh
d)
p=mg
109.
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
110.

In any collision (crash) the ______ is ALWAYS constant

a)

total momentum

b)

total speed

c)

total Velocity

d)

Energy

111.
Sally runs and jumps off of a diving board and lands on a tube (she stays in the tube).  The collision between Sally and the tube is
a)
Elastic
b)
Explosive
c)
Inelastic
d)
Completely absurd
112.
T/F:  A big truck will always have more momentum than a small car.
a)
True
b)
False
113.
The impulse acting on an object is always equal to its change in _____.
a)
Momentum
b)
Energy
c)
Position
d)
Velocity
114.
As you are walking along the sidewalk you step on a piece of gum that sticks to your shoe.  This is an example of an _____ collision.
a)
Elastic
b)
Inelastic
115.
Due to friction, a purely _____ collision is impossible outside of a laboratory setting.
a)
Elastic
b)
Inelastic
116.

Newton's 3rd Law: When a student on a skateboarder applies a force of 20 Newton to 'push' the ball in a positive direction, what does the student experience?

a)

A positive (+) force of the same magnitude

b)

A negative (-) force of equal magnitude

c)

No force at all, only the ball experiences the force

d)

A force that is smaller than the 'push' do to being more massive

117.

Newton's 3rd Law: When a student (40 kg) on a skateboard applies a force to accelerate a medicine ball (5kg) to the right, the force acting on the student is:

a)

A much smaller force

b)

A much larger force

c)

Exactly the same force applied to the ball

d)

No answer is correct

118.

The momentum of an object depends upon the object's ___________&_____________.

a)

size and shape

b)

mass and veloctiy

c)

mass and energy

119.

You have THREE different objects with different masses traveling at different velocities. Which has the greatest momentum?


Object A: really massive traveling slowly

Object B: low mass traveling really fast

Object C: a medium mass traveling at a medium speed

a)

Object A has the greatest momentum

b)

Object B has the greatest momentum

c)

Object C has the greatest momentum

d)

We cannot say which one has the most momentum without knowing the mass and velocity

120.

When comparing the momentum of moving objects, which of the following is correct?


Object A: 10 kg traveling at +8 m/s

Object B: 8 kg traveling at -10 m/s

Object C: 5 kg traveling at +20 m/s

a)

Object A has the greatest momentum

b)

The more massive object has the greatest momentum

c)

Object C has the greatest momentum

d)

The object traveling the fastest will ALWAYS have the greatest momentum

121.

When comparing the momentum of moving objects, which of the following is correct?


Object A: 10 kg traveling at +8 m/s

Object B: 8 kg traveling at -10 m/s

Object C: 5 kg traveling at +20 m/s

a)

Momentum is vector and requires direction

b)

Objects A and C have + momentum

c)

Object B has -80 kg m/s of momentum

d)

All answers are true

122.

Two billiard balls collide. Identify the type of collision.

a)

elastic

b)

perfectly elastic

c)

inelastic

d)

perfectly inelastic

123.

In a two-body collision,

a)

momentum is always conserved

b)

kinetic energy is always conserved

c)

neither momentum nor kinetic energy is conserved

d)

both momentum and kinetic energy are always conserved

124.
This picture is an example of ____________
a)
Elastic Collision
b)
Inelastic collision
125.
This is an example of what kind of collision?
a)
Elastic
b)
Inelastic
126.

The law of conservation of momentum states that

a)

the total initial momentum of all objects interacting with one another usually equals the total final momentum

b)

the total initial momentum of all objects interacting with one another does not equal the total final momentum

c)

the total momentum of all objects interacting with one another is zero

d)

the total momentum of all objects interacting with one another remains constant regardless of the nature of the forces between the objects

127.

A billiard ball collides with a stationary identical billiard ball in a perfectly elastic head-on collision. After the collision, which of the following is true of Ball A?

a)

it maintains its initial velocity

b)

it has one-half its initial velocity

c)

it comes to rest

d)

it moves in the opposite direction

128.

The law of conservation of momentum states that the total momentum of all objects interacting with each other will ________________________ no matter of the nature of the forces between the object.

a)

increase

b)

decrease

c)

remain constant

d)

fluctuate

129.

What is the RELATIONSHIP of momentum to mass? (*Assume velocity stays constant)

a)

Direct

b)

Inverse

c)

Inverse square

d)

No relationship

130.

What is the RELATIONSHIP of mass to velocity?

(*Assume momentum stays constant)

a)

Direct

b)

Inverse

c)

Inverse square

d)

No relationship

131.

A rock freefalls off of a cliff toward Earth. The momentum of the falling rock is _______ on its fall.

a)

Decreasing

b)

Increasing

c)

Staying constant

d)

No idea whatsoever

132.

A rock freefalls off of a cliff toward Earth. At exactly what point does the rock have its greatest momentum?

a)

Upon impact with the ground

b)

The instant the person lets go of the rock

c)

Exactly midway through its fall

d)

There is no way to determine

133.

In which position (letter) does the object have ZERO momentum in the Y-direction?

a)

Letter A

b)

Letter B

c)

Letter C

d)

Letter D

e)

Letter E

134.

What is another name for gravitational force?

a)

weight

b)

gravitational potential energy

c)

newton

d)

height force

135.

The apples on the tree are identical.

Which statement below is correct?

a)

Gravitational force acting on A is higher than gravitational force acting on B.

b)

Gravitational force acting on B is lower than gravitational force acting on C.

c)

Gravitational forces acting on A, B and C are the same.

d)

Gravitational force acting on C is higher than gravitational force acting on A.

136.

The apples on the tree have the same mass.

Which statement below is correct?

a)

Gravitational force acting on A is higher than gravitational force acting on B.

b)

Gravitational force acting on B is higher than gravitational force acting on A.

c)

Gravitational forces acting on A and B are the same.

d)

Gravitational forces acting on A and B cannot be compared.

137.

Which apple is acted by the strongest gravitational force?

a)

A and B only

b)

B only

c)

B and D only

d)

A, B, C and D are acted by the same amount of gravitational force.

138.

Which apple has the strongest gravitational force acting on it?

a)

A

b)

B

c)

C

d)

D

139.

The weight of an object changes when the ___________of the object changes.

a)

mass

b)

size

c)

shape

d)

colour

140.

When you travel from Earth to a place far away from any planet, your ______________.

a)

weight and mass remain the same

b)

weight remains the same but not your mass

c)

mass remains the same but not your weight

d)

weight and mass change

141.

An apple was thrown vertically upwards from the hand to the highest point in the air.

The gravitational force acting on the apple was ___________.

a)

highest when the apple had just left the hand

b)

highest when the apple was at the highest point

c)

the same for the three positions

d)

highest when the apple was on the way up

142.

Which of the following correctly shows the direction of gravitational force acting on the block?

a)
b)
c)
d)
143.

Which of the following shows the unit of mass and weight?

a)

gram, kilogram

b)

kilogram, Newton

c)

kilogram and litre

d)

litre, Newton

144.

What is the gravitational force acting on you when you are far away from any planet?

a)

zero

b)

same as when you are on Earth

c)

less than when you are on Earth

d)

more than when you are on Earth

145.

What is the gravitational force acting on you when you are on Moon?

a)

zero

b)

same as when you are on Earth

c)

less than when you are on Earth

d)

more than when you are on Earth

146.

Projectile motion is caused by....

a)

a downward force

b)

an initial forward velocity or force

c)

a final vertical velocity of force

d)

a vertical force of gravity and a horizontal velocity or force

147.

If an object has a mass of 2 kg then it's weight on the earth is.....

a)

2 kg

b)

20N

c)

.2 FT

d)

20 pounds

148.

The acceleration due to gravity on the earth is...

a)

9.8 m/s2

b)

9.8 m/s

c)

9.8 m

d)

9.8 ft/s

149.

The force OF GRAVITY acting on an object's mass is its.....

a)

weight

b)

net force

c)

acceleration

d)

orbit

150.
The more mass an object has, the ______________ gravitational pull it has.
a)
weaker
b)
stronger
151.
The less mass an object has, the ______________ gravitational pull it has.
a)
weaker
b)
stronger
152.
The _____________ two objects are to/from each other, the stronger the gravitational pull between them.
a)
further
b)
closer
153.
The _____________ two objects are to/from each other, the weaker the gravitational pull between them.
a)
further
b)
closer
154.
The amount of gravity pulling down on an object is called its...
a)
mass
b)
weight
c)
gravity
d)
force

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