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Unit 2 Lesson 3 Newton's Laws Quiz

Total questions: 80

Worksheet time: 2hrs 22mins

Name
Class
Date
1.

A ____________ is a push or a pull on an object.

a)

friction

b)

force

c)

magnet

d)

gravity

2.

What is the unit to MEASURE force?

a)

Kilogram

b)

Meter

c)

Pounds

d)

Newton

3.

TRUE OR FALSE: Unbalanced forces result in a change of motion.

a)

True

b)

False

4.
What is the net force?
a)
20 N 
b)
0 N 
c)
400 N 
d)
40 N 
5.
What is the net force?
a)
10 N
b)
0 N
c)
25 N
d)
1 N
6.
If these teams are pulling with the same amount of force what will happen?
a)
The boy in blue will win.
b)
They will not move at all.
c)
The boy in red will win.
d)
Both will fall down.
7.
Balanced or unbalanced?
a)
balanced
b)
unbalanced
8.
The sum of all forces acting on an object.
a)
Contact Force
b)
Balanced Force
c)
Unbalanced Force
d)
Net Force
9.

An object in motion will stay in motion and an object at rest will stay at rest unless acted upon by an outside force. Which law does this describe

a)

2nd law

b)

1st law

c)

3rd law

10.
What law is best described by inertia?
a)
1st
b)
2nd
c)
3rd
d)
law of conservation of mass
11.

Friction forces always ________ motion

a)

assist

b)

oppose

c)

speed up

d)

eat

12.

Rougher surfaces have ________ friction

a)

more

b)

less

c)

even

13.

When 2 surfaces push against each other with greater force, there will be ______ friction force

a)

more

b)

less

c)

no change in the

14.

Decreasing the surface area between to object will cause the friction to _______.

a)

increase

b)

decrease

c)

stay the same

d)

blow up

15.

Friction is both good and bad depending upon the situation.

a)

True

b)

False

16.

Which type of friction is shown in the picture?

a)

rolling

b)

fluid

c)

static

d)

sliding

17.

Which type of friction is shown in the picture?

a)

fluid

b)

static

c)

rolling

d)

sliding

18.

Which type of friction is shown in the picture?

a)

rolling

b)

static

c)

fluid

d)

sliding

19.

Which boy A or B will slide down faster

a)

A

b)

B

c)

A and B

20.

What does the strength of the force depend on? Check the answers that apply.

a)

The types of surfaces

b)

The weather

c)

How hard the surfaces push together

d)

motion

21.

_____________ friction acts on objects that are not moving.

a)

sliding

b)

rolling

c)

static

d)

fluid

22.

Air resistance is a type of fluid friction.

a)

True

b)

False

23.

If the following objects were dropped from the same height, which one would hit the floor first?

a)
b)
c)
24.

Air resistance is determined by

a)

speed

b)

size

c)

shape

d)

All the above

25.

Greater speeds cause ________ resistance.

a)

less

b)

unchanging

c)

greater

26.

Thinner and pointed objects have ________ resistance.

a)

increased

b)

unchanging

c)

decreased

27.
Gravity attracts all objects towards one another.
a)
False
b)
True
c)
It depends
28.

What two things determine the gravity of an object?

a)

mass & weight

b)

mass & distance

c)

density & mass

d)

volume & distance

29.
Which model has greater gravitational attraction (if any)
a)
Model A
b)
Model B
c)
Both Model A and Model B (same gravity)
30.
The farther apart two objects are, the __ their gravity.
a)
weaker
b)
stronger
c)
more equal
31.

Match the following

a)

1.

Largest mass in our solar system

b)

2.

Greater gravity

c)

3.

Less gravity

d)

4.

Air resistance

e)

5.

Earth's gravity holds it close

32.

Newton's Universal Law of Gravitation claims that the attraction between objects with mass depend on what 2 things?

a)

volume and height

b)

velocity and height

c)

acceleration and mass

d)

mass and distance

33.

When a parachute canopy is opened more drag is created because:

a)

It has a large mass

b)

It has a large surface area

c)

It is travelling at terminal speed

d)

The person is now vertical

34.

If this graph were to show a parachutist jumping from a plane, how would you describe the forces acting at point B.

a)

His weight is bigger than air resistance

b)

Air resistance is bigger than his weight.

c)

His weight and air resistance are balanced.

35.

Just after she jumps out of the plane (before the parachute opens). The relative forces will be

a)

Balanced

b)

Unbalanced

36.

Just after she jumps out of the plane (before the parachute opens). The relative forces will be

a)

Weight force is equal to the friction force

b)

Friction force is constant

c)

Weight force is greater that the friction force

d)

Friction force is greater than the weight force

37.

Just after she jumps out of the plane (before the parachute opens). The net force will be

a)

zero

b)

upward

c)

downward

38.

Just after she jumps out of the plane (before the parachute opens). The sky diver will have

a)

a constant speed

b)

a constant acceleration

c)

a constant velocity

39.

Identify the true statement:

a)

Drag is increasing

b)

Velocity is increasing

c)

Terminal velocity

d)

Acceleration

40.
Accelerations are produced by
a)
velocities
b)
accelerations
c)
forces
d)
masses
41.
How much force is needed to accelerate a 2 kg physics book to an acceleration of 6 m/s/s?
a)
36 N
b)
12 N
c)
3 N
d)
0.33 N
42.

what is the correct formula for force?

a)

F=ma

b)

F=maF=\frac{m}{a}

c)

F=amF=\frac{a}{m}

d)

F=a×vF=a\times v

43.

use the triangle to solve the question.

Find the force required to move a box having mass 10Kg with an acceleration of 9m/s2 .

a)

10N

b)

90N

c)

100N

d)

20N

44.

An object traveling at 4.0 m/s has a momentum of 16 N. What is the mass of the object ?

a)

20 kg B

b)

64 kg

c)

4.0 kg

d)

12 kg

45.
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
46.
If a 1 kilogram object had a force of 10 Newton's applied to it, what would it's acceleration be? 
a)
1 m/s^2
b)
.1 m/s^2
c)
10 m/s^2
d)
100 m/s
47.
If a 10 kilogram object had a force of 50 newton's applied to it, what would its acceleration be?
a)
15 m/s^2
b)
5 m/s^2
c)
.5 m/s^2
d)
10 m/s^2
48.
How much force is needed to accelerate a 3kg skateboard at 5m/s2?
a)
8N
b)
1.6N
c)
0.6N
d)
15N
49.

If I apply the same force to a ping pong ball and a bowling ball, which one will accelerate farther and faster?

a)

ping pong ball

b)

bowling ball

c)

I have no idea

50.

Why is it harder to push a van filled with bowling balls than it is to push a van with basketballs?

a)

The mass of the car is greater than the mass of the basketballs

b)

The mass of the bowling balls is greater than the mass of the basketballs

c)

The van with the basketballs is bigger than the van with the bowling balls

d)

It should be equally as hard to push the two vans

51.

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

52.
The force of gravity acting on an object is the object's ______.
a)
mass
b)
matter
c)
weight 
d)
friction 
53.

What is acceleration due to gravity on Earth?

a)

98 m/s2

b)

9.8 m/s2

c)

0.98 m/s2

54.
Which of the following never changes no matter where in the universe?
a)
weight
b)
force
c)
mass
d)
pounds
55.
If mass = 78.9 kg, weight on Earth = 
a)
774 N
b)
77.4 N
c)
8 N
d)
774 kg
56.
If mass = 1.6 kg, weight on Earth = 
a)
0.16 N
b)
15.7 kg
c)
15.7 N
d)
157 N
57.
If weight on Earth = 4.80 N, mass =
a)
32 kg
b)
0.49 kg
c)
47 kg
d)
0.49 N
58.
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
59.
The amount of matter in an object is 
a)
pressure
b)
weight
c)
mass
d)
force
60.
Which of the following never changes no matter where in the universe?
a)
weight
b)
force
c)
mass
d)
pounds
61.
What is the definition of "weight"?
a)
measure of the force of gravity on your body
b)
the time it takes to get on a ride 
c)
the amount of matter in an object
d)
the size of an object
62.

Which one of Newton's laws are displayed

a)

2nd law

b)

1st law

c)

3rd law

63.

This is Newton's 3rd law

a)

True

b)

False

64.
For every action, there is an equal and opposite reaction.
a)
Newton's
1st
Law of Motion
b)
Newton's
2nd
Law of Motion
c)
Newton's
3rd
Law of Motion
65.

You push against a wall and the wall is pushing back on you.

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

66.

If you push on a wall with a force of 30 N, the force acting on you from the wall is which of the following?

a)

0 N

b)

10 N

c)

20 N

d)

30 N

67.

When you jump up, you push the earth downwards. Why can't you tell that the earth has moved?

a)

The force of you jumping up doesn't actually push the earth down.

b)

The earth is firmly rooted

c)

The earth has much more mass so you can't tell that it moved

68.

The equation for momentum is?

a)

momentum = force - mass

b)

momentum = acceleration / mass

c)

momentum = mass x acceleration

d)

momentum = mass x velocity

69.

Even if an object has a smaller mass, it can have a larger momentum if it has a high _______.

a)

velocity

b)

displacement

c)

weight

70.

Which has more momentum: a 3.0 kg sledgehammer swung at 1.5m/s, or a 4.0 kg sledgehammer swung at 0.9 m/s?

a)

the 3.0 kg sledgehammer

b)

the 4.0 kg sledgehammer

71.

A golf ball travels at 16 m/s while a baseball moves at 7 m/s. The mass of the golf ball is 0.045 kg and the mass of the baseball is 0.14 kg. Which has a greater momentum?

a)

golf ball

b)

baseball

72.
The equation to calculate momentum is
a)
p=mv
b)
p=1/2mv2
c)
p=mgh
d)
p=mg
73.

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

74.

Two skaters begin at rest. Skater 1 has a smaller mass than Skater 2. After they push off each other,...

a)

Skater 1 experiences a greater change in momentum

b)

Skater 2 experiences a greater change in momentum

c)

Skater 1 has a greater speed than Skater 2

d)

Skater 1 experiences a greater force

75.

According to the Law of Conservation of Momentum, when two objects collide:

a)

both objects lose momentum.

b)

both objects gain momentum

c)

momentum is neither lost nor gained.

d)

momentum is always lost or gainer.

76.

A cannon with a mass of 1455 kg fires a 9.4 kg cannon ball with a velocity of 92 m/s. With what velocity does the cannon move after the cannon ball is fired?

a)

-0.59 m/s

b)

0.59 m/s

c)

-1.68 m/s

d)

1.68 m/s

77.
A large box slides across a frictionless surface with a velocity of 12 m/s and a mass of 4 kg,  collides with a smaller box with a mass of 2 kg that is stationary.  The boxes stick together. What is the velocity of the two combined masses after collision?
a)
0 m/s
b)
4 m/s
c)
8 m/s
d)
12 m/s
78.

The Law of Conservation of Momentum states:

a)

The total momentum before a collision is equal to the total momentum after a collision.

b)

The total momentum before a collision is greater than the total momentum after a collision.

c)

The total momentum before a collision is less than the total momentum after a collision.

d)

The total momentum before a collision is not related to the total momentum after a collision.

79.

A 2.5 kg ball moving at 5 m/s collides with a 2.5 kg stationary ball in a perfectly elastic collision (momentum is completely transferred). 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

80.

A projectile of mass 1 kilogram traveling at 9 meters per second collides with another projectile of mass 2 kilograms traveling at 6 meters per second in the same direction. If the projectiles "stick" together after their collision, what is their velocity after colliding?

a)

7 m/s

b)

8 m/s

c)

7.5 m/s

d)

9 m/s

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