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Unit Exam 3

Total questions: 40

Worksheet time: 3hrs 20mins

Name
Class
Date
1.

When a student runs and kicks a ball, they have applied an ___________ force to move the ball.

a)

Balanced

b)

Magnetic

c)

Spring

d)

Unbalanced

2.

Which law of motion says that you must push or pull objects harder if they have more mass?

a)

1st

b)

2nd

c)

3rd

d)

4th

3.

What law is best described by inertia?

a)

1st

b)

2nd

c)

3rd

d)

law of conservation of mass

4.

A person not paying attention while skateboarding hits a rock. The skateboard stops...they don't.

a)

The Law of Inertia (1st law)

b)

The Law of Acceleration (2nd law)

c)

The Law of Conservation of Momentum

d)

Action Reaction Law (3rd law)

5.

What Unit do we Measure Force in?

a)

Newtons

b)

Joules

c)

Force

d)

Kilograms

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.

A 20 kg bike accelerates at 10 m/s2. what was the force

F = m x a

a)

25 Newtons

b)

20 Newtons

c)

200 Newtons

d)

10 Newtons

8.

Newton's third law states that any action will have a(n) _______ and ______ reaction

a)

Equal and similar

b)

Equal and opposite

c)

Equal and different

d)

Greater and opposite

9.

Which of Newton's laws is shown

a)

1st law

b)

3rd law

c)

2nd law

10.

If there is a big mass, it would need a stronger force to accelerate it. Which law does this describe?

a)

3rd law

b)

1st law

c)

2nd law

11.

What force slows objects down and keeps them from moving?

a)

Acceleration

b)

Gravity

c)

Friction

d)

Net Force

12.
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
13.
What is Newtons 2nd law of motion?
a)
Pancakes 
b)
Force= Mass multiplied by acceleration
c)
For every action there is a equal and opposite  re-action.
d)
Law of gravity 
14.
A net force of 15 N is exerted on an encyclopedia to cause it to accelerate at a rate of 5 m/s2. Determine the mass of the encyclopedia?
a)
 m = 3.0 kg
b)
m = 4.0 kg 
c)
m = 3.0 ml 
d)
m = 30.0 g
15.
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 
16.

Is this Balanced or Unbalanced force.

a)

Unbalanced force

b)

Balanced force

17.

What force is acting on the cat at the end?

a)

Gravity

b)

Friction

c)

Momentum

18.
Newton's third law states that any action will have a(n) _______ and ______ reaction
a)
Equal and similar
b)
Equal and opposite
c)
Equal and different
d)
Greater and opposite
19.
If these boys 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.
20.

Earth exerts a stronger gravitational force than the moon because Earth has more________.

a)

stuff

b)

mass

c)

density

d)

gravity

21.

The tendency of objects to resist a change in motion is called:

a)

Friction

b)

Inertia

c)

Gravity

d)

Velocity

22.

What explains why objects resist changes in their state of motion?

a)

gravity

b)

inertia

c)

force

d)

friction

23.
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.
24.
An empty truck and a fully loaded truck are next to each other at a traffic light. When the light turns green, the lighter truck increases speed more quickly. Which of these best explains this situations
a)
Newton's first law
b)
Newton's second law
c)
Newton's third law
d)
Conservation of momentum
25.
The combination of all the forces acting on an object is the...
a)
net force
b)
action force
c)
reaction force
d)
balance force
26.
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
27.

An inflated balloon released from rest moves horizontally.

The law that best explains this event is

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

d)

Law of Gravity

28.

Which of the following is the correct position - time graph for an object moving with a constant velocity?

a)
b)
c)
d)
29.
What is the formula for force?
a)
F=M/A
b)
F=A/M
c)
F=M*A
d)
F=M*F
30.

The reason a ball bounces up when it hits the ground:

a)

The ball and ground repel each other.

b)

The ball exerts a force on the ground, and the ground exerts a force on the ball.

31.

What was Newton's first name?

a)

Isaac

b)

Ivan

c)

Michael

d)

Iforgot

32.
An empty truck and a fully loaded truck are next to each other at a traffic light. When the light turns green, the lighter truck increases speed more quickly. Which of these best explains this situations
a)
Newton's first law
b)
Newton's second law
c)
Newton's third law
d)
Conservation of momentum
33.

What is the net force?

Calcula la fuerza neta del objeto en la imagen que se muestra.

a)

3 N

b)

3 N, right

c)

17 N, right

d)

3 N, left

34.

Calculate the net force of the object in the image shown.

Calcula la fuerza neta del objeto en la imagen que se muestra.

a)
20N
b)
35N
c)
5N
d)
25N
35.

What is the net force?

Calcula la fuerza neta del objeto en la imagen que se muestra.

a)
20 N 
b)
0 N 
c)
400 N 
d)
40 N 
36.

Forces that have a net force of zero Newtons

Fuerzas que tienen una fuerza neta de cero Newtons

a)

Balanced force

equilibrada

b)

Unbalanced force

desequilibrada

37.

What will cause an object to move?

¿Qué hará que un objeto se mueva?

a)

Applied forces

fuerzas aplicadas

b)

Balanced forces

equilibrada

c)

Unbalanced forces

desequilibrada

38.

A force is a push or pull measured in what units? 

Una fuerza es un empujón o un tirón medido en qué unidades?

a)

Meters per second, squared

Metros por segundo, al cuadrado

b)

Kilograms 

kilogramos

c)
Newtons 
39.

When the vectors (arrows) point in the same direction what function do you use? 

Cuando los vectores (flechas) apuntan en la misma dirección, ¿qué función usas?

a)

Dividing 

divisora

b)

Multiplying 

multiplicando

c)

Subtracting 

restando

d)

Adding 

agregando

40.

Are the forces balanced?

¿Están equilibradas las fuerzas?

a)

yes

b)

no

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