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Physics Force Test Review

Total questions: 64

Worksheet time: 50mins

Name
Class
Date
1.

The sum of all forces acting on an object and direction is called the

a)

Balanced Force

b)

Net Force

c)

Unbalanced Force

d)

Contact Force

2.

A push/pull exerted on an object is called a

a)

Force

b)

Momentum

c)

Speed

d)

Net force

3.

Are the forces balanced or unbalanced?

a)

Balanced

b)

Unbalanced

4.

A Newton is a unit of ______.

a)

Acceleration

b)

Inertia

c)

Force

d)

Velocity

5.

Name the missing force.

a)

Gravitational Force

b)

Normal Force

c)

Friction Force

d)

Applied Force

6.

Name the missing force.

a)

Normal Force

b)

Push/Pull Force

c)

Friction Force

d)

Tension Force

7.

Name the missing force.

a)

Normal Force

b)

Friction Force

c)

Gravitational Force

d)

Push/Pull Force

8.

The force that keeps objects on top of surfaces instead of letting them sink into the surface is known as:

a)

Normal Force

b)

Gravitational Force

c)

Friction Force

d)

Air resistance

9.

A leftward force is applied to a crate to push it across the floor at a constant speed. Which is the correct force diagram?

a)
b)
c)
d)
10.

A rightward force is applied to a dresser to accelerate it to the right across the bedroom floor.

a)
b)
c)
d)
11.

Which one of Newton's laws is shown

a)

3rd law

b)

2nd law

c)

1st law

12.

What does this picture represent?

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

d)

All of these

13.

Which one of Newton's laws are displayed

a)

2nd law

b)

1st law

c)

3rd law

14.

Which of Newton's laws is shown

a)

1st law

b)

3rd law

c)

2nd law

15.

What force slows objects down and keeps them from moving?

a)

Acceleration

b)

Gravity

c)

Friction

d)

Net Force

16.

(Using Fnet=ma), What net force is required to accelerate a car at a rate of 2 m/s2 if the car has a mass of 3,000 kg?

a)

6,000 N

b)

1,500 N

c)

3,002 N

d)

2,998 N

17.

(Use Fnet=ma). What is the mass of a falling rock if it produces a force of 147 N? (Acceleration due to gravity = 9.81 m/s2)

a)

15 kg

b)

1,440.6 kg

c)

156.8 kg

d)

137.2 kg

18.

(Use Fnet=ma). What is the acceleration of a softball if it has a mass of 0.5 kg and hits the catcher's mitt with a force of 25 N?

a)

0.5 kg

b)

50 kg

c)

25.5 kg

d)

12.5 kg

19.

(Use Fnet=ma). Use the diagram to determine the net force, assume the object is accelerating at a rate of 2 m/s2 and determine the mass of the object.

a)

2 kg

b)

4 kg

c)

6 kg

d)

8 kg

20.

(Use Fnet=ma). Use the diagram to determine the net force, assume the object is accelerating at a rate of 3 m/s2, and determine the object's mass?

a)

3 kg

b)

5 kg

c)

60 kg

d)

75 kg

21.
Since Force = Mass * Acceleration, how would you manipulate the equation to solve for mass?
a)
Divide both sides of the equation by Mass
b)
Divide both sides of the equation by force
c)
Divide both sides of the equation by acceleration
d)
Equations cannot be manipulated
22.
The larger the mass you have the _____ force you need to change its motion.
a)
more
b)
less
23.

Since Force = Mass * Acceleration, how would you manipulate the equation to solve for acceleration?

a)

Divide both sides of the equation by Mass

b)

Divide both sides of the equation by force

c)

Divide both sides of the equation by acceleration

d)

Equations cannot be manipulated

24.

What do we call a force that has a net force of zero Newtons and the object does not change its motion?

a)

balanced force

b)

unbalanced force

c)

acceleration force

d)

net force

25.

What do we call a force that causes an object to accelerate?

a)

net force

b)

moving force

c)

acceleration force

d)

unbalanced force

26.

What is the magnitude and direction of the force in the free body diagram shown?

a)

70 N right

b)

70 N left

c)

50 N right

d)

50 N left

27.

What is the magnitude and direction of the force in the free body diagram shown?

a)

20 N, no change in motion

b)

20 N right

c)

20 N left

d)

0 N , no change in motion

28.

What is the magnitude and direction of the force in the free body diagram shown?

a)

35 N right

b)

17 N right

c)

11 N right

d)

5 N right

29.
What type of friction is not moving?
a)
static
b)
sliding
c)
fluid
d)
rolling
30.

How would the absence of friction affect a marble traveling on a long, straight path?

a)

The marble’s velocity would decrease.

b)

The marble’s would accelerate.

c)

The marble would stop immediately.

d)

The marble would remain at constant velocity.

31.
Rougher surfaces have ...
a)
greater friction
b)
less friction
c)
the same level of friction
32.

Determine the coefficient of friction if :FN=100N, Ff=20N

a)

μ=5.0

b)

μ=0.2

c)

μ=1.2

d)

μ=0.1

33.

In what direction does friction act, relative to motion?

a)

in the same direction

b)

in the opposite direction

c)

need more information

d)

depends on the force

34.

A box takes 40. N to start moving when the coefficient of static friction is 0.54. What is the weight of the box?

a)

81 N

b)

18 N

c)

98 N

d)

74 N

35.

Normal force is

a)

Always opposite the weight

b)

Always parallel and down the incline

c)

Always perpendicular to the surface

d)

It depends on the direction of motion

36.
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
37.

Which of the following is NOT a contact force?

a)

friction

b)

normal force

c)

weight

d)

air resistance

38.

If you have a mass of 72 kg, about how much is your weight?

a)

700 pounds

b)

720 Newtons

c)

72 Newtons

d)

7.2 pounds

39.

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

a)

30 Newtons

b)

2 Newtons

c)

200 Newtons

d)

10 Newtons

40.
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
41.
The combination of all the forces acting on an object is the...
a)
net force
b)
action force
c)
reaction force
d)
balance force
42.
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
43.

Force of attraction (pulling) between two objects. (Every object experiences this on earth)

a)

gravitational

b)

normal

c)

applied

d)

friction

44.
A type of friction that occurs when air pushes against a moving object causing it to decelerate.
a)
surface area
b)
air resistance
c)
velocity
d)
gravity 
45.

what is the force acting in the ropes of the swing?

a)

tension

b)

normal reaction

c)

friction

d)

weight

46.
What is the net force?
100 N        230 N
<------        --------->
a)
30 N to the right
b)
230 N to the right
c)
130 N to the right
d)
This is a balanced force
47.
Which statement describes a vector?
a)
It has magnitude but no direction
b)
It has direction but no magnitude
c)
It has both direction and magnitude
d)
It has constant magnitude but no
 direction
48.
How do you combine vectors if they are at a right angle to each other, and you know two sides?
a)
Multiply
b)
Divide
c)
Pythagorean Theorem
d)
Use trigonometry
49.

When the vectors (arrows) point away what function do you use?

a)

Dividing

b)

Multiplying

c)

Subtracting

d)

Adding

50.
When the vectors (arrows) point in the same direction what function do you use? 
a)
Dividing 
b)
Multiplying 
c)
Subtracting 
d)
Adding 
51.

Assuming this object was originally at rest, will the net force cause an acceleration, (a change in its motion)? If so, in what direction will it accelerate?

a)

No, the net forces are balanced, therefore in equilibrium. The box remains at rest

b)

The forces are not balanced, so the Net force is not in equilibrium, so the box will accelerate to the left.

c)

The forces are not balanced, so the Net force is not in equilibrium, so the box will accelerate up.

d)

The forces are not balanced, so the Net force is not in equilibrium, so the box will accelerate to the right.

e)

The forces are not balanced, so the Net force is not in equilibrium, so the box will accelerate down.

52.
If vectors X and Y are added, then the resultant would be best represented by vector _____. 
a)
A
b)
B
c)
C
d)
D
53.

How is this an example of Newton's Third Law?

a)

Only the ball is applying a force to the soccer players head

b)

Only the soccer players head is applying the force to the ball

c)

The are both exerting an equal force on each other

54.

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

55.

A book rests on a table.  The force of gravity pulls down on the book with a force of 20 newtons. What prevents the books from accelerating downward ?   

a)

The table presses back up on the book with an equal and opposite force of 20 newtons.

b)

The table presses back up with a force greater than 20 Newtons

c)

The tale and the book together are accelerating downwards at 9.8 m/sec2

d)

The inertia of the book holds it up

56.
Rougher surfaces have ...
a)
greater friction
b)
less friction
c)
the same level of friction
57.

FN=100N, Ff=20N

a)

μ=5.0

b)

μ=0.2

c)

μ=1.2

d)

μ=0.1

58.

A 2.50 kg block is held motionless on a rough inclined plane by means of a string attached to a vertical wall as shown in the drawing. θ=15.0 and the string is pulling with 10.0 N. What amount of static friction is present?

a)

6.34 N

b)

10.0 N

c)

3.70 N

d)

0 N

59.
If an object is at rest on an inclined plane, which of the following forces is greatest?
a)
Normal Force
b)
Friction
c)
Weight
d)
Both Normal Force and Weight are equal, so they both are the greatest.
60.
A box weighing 46 newtons rests on an incline that makes an angle of 25° with the horizontal. What is the magnitude of the component of the box’s weight perpendicular to the incline?
a)
19N
b)
21N
c)
42N
d)
26N
61.

Which of the following is the best expression for the Normal Force?

a)

FN = mg cos(ϴ)

b)

FN = mg sin(ϴ)

c)

FN = mg sin(180-ϴ)

d)

FN = mg cos(90-ϴ)

62.

If there is no friction, then the accelerating force would be equal to

a)

mg

b)

sin(θ)mg

c)

g

d)

sin(θ)g

63.
A 10.-newton block is sliding down a 30-degree incline at a constant speed. What is the force of friction?
a)
5N
b)
4.9N
c)
10N
d)
98N
64.
A 10.0-kilogram mass held at rest on a frictionless 30.0º incline by force F. What is the magnitude of force F?
a)
49.1N
b)
98.1N
c)
85N
d)
9.81N

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