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Forces and Newton's Laws of Motion

Total questions: 39

Worksheet time: 21mins

Name
Class
Date
1.

Which force is done by a person or machine?

a)

Applied force

b)

Normal force

c)

Gravitational force

d)

Buoyant force

2.

Which force is due to a fluid pushing back on an object?

a)

Applied force

b)

Normal force

c)

Gravitational force

d)

Buoyant force

3.

Which force is the one that pushes back on an object (opposite gravity)?

a)

Applied force

b)

Normal force

c)

Gravitational force

d)

Buoyant force

4.

Which force is due to a massive object like the earth?

a)

Applied force

b)

Normal force

c)

Gravitational force

d)

Buoyant force

5.

Which is the force that opposes motion (think ice skates on ice, shoes on the floor etc.)?

a)

Tension force

b)

Spring force

c)

Air resistance

d)

Friction force

6.

Which force is a special type of friction due to air?

a)

Tension force

b)

Spring force

c)

Air resistance

d)

Friction force

7.

Which force is due to objects such as a rope, pulley, cable or wire?

a)

Tension force

b)

Spring force

c)

Air resistance

d)

Friction force

8.

Which force is due to a stretched or compressed spring (better not miss this one!)?

a)

Tension force

b)

Spring force

c)

Air resistance

d)

Friction force

9.

An object in free fall will accelerate at 9.8 m/s2 until it reaches a point where it is no longer possible to accelerate. What is this called?

a)

Wind speed

b)

Terminal velocity

c)

Friction force

d)

Air resistance

10.

Is this object balanced or unbalanced? What direction is it accelerating?

a)

Balanced, not accelerating

b)

Unbalanced, accelerating left

c)

Unbalanced, accelerating down

d)

Unbalanced, accelerating right

11.

Is this object balanced or unbalanced? What direction is it accelerating?

a)

Balanced, not accelerating

b)

Unbalanced, accelerating left

c)

Unbalanced, accelerating down

d)

Unbalanced, accelerating right

12.

Is this object balanced or unbalanced? What direction is it accelerating?

a)

Balanced, not accelerating

b)

Unbalanced, accelerating left

c)

Unbalanced, accelerating down

d)

Unbalanced, accelerating right

13.

What is the net force of this object?

a)

0 N

b)

1 N

c)

30 N

d)

225 N

14.

What is the net force of this object?

a)

750 N

b)

450 N

c)

550 N

d)

0 N

15.

What is the net force of this object?

a)

10 N

b)

1000 N

c)

1375 N

d)

1125 N

16.

Which of the following is Newton's First Law of Motion (Law of Inertia)?

a)

The property of matter that resists change in motion or direction unless acted upon by an unbalanced force

b)

An unbalanced net force on an object will cause acceleration

c)

For every force, there is an equal and opposite force

17.

Which of the following is Newton's Third Law of Motion (Law of Action/Reaction)?

a)

The property of matter that resists change in motion or direction unless acted upon by an unbalanced force

b)

An unbalanced net force on an object will cause acceleration

c)

For every force, there is an equal and opposite force

18.

Which of the following is Newton's Second Law of Motion (F=ma)?

a)

The property of matter that resists change in motion or direction unless acted upon by an unbalanced force

b)

An unbalanced net force on an object will cause acceleration

c)

For every force, there is an equal and opposite force

19.

An object experiences 20 m/s2 acceleration and has a mass of 7 kg. Find the force.  F=maF=ma  

a)

13 N

b)

140 N

c)

27 N

d)

3 N

20.

An object experiences 10 m/s2 acceleration when pushed with 200 N of force. Find the object's mass. F=maF=ma

a)

210 kg

b)

2000 kg

c)

190 kg

d)

20 kg

21.

A 20 kg object experiences the following forces: 98 N normal force, 98 N gravitational force, 110 N applied force and 10 N frictional force. What is the object's acceleration? (Hint: you need to find net force first and it may be easier to draw the free body diagram.) F=maF=ma  

a)

6 m/s2

b)

30 m/s2

c)

5 m/s2

d)

0 m/s2

22.

According to Newton's Third Law, a fly hitting a windshield experiences

a)

the same force as the windshield.

b)

less force than the windshield.

c)

more force than the windshield.

23.

According to Newton's Third Law, a bowling ball hitting bowling pins experiences

a)

the same force as the pins.

b)

less force than the pins.

c)

more force than the pins.

24.

According to Newton's Third Law, a bicycle hitting a parked car experiences

a)

the same force as the car.

b)

less force than the car.

c)

more force than the car.

25.

According to Newton's Third Law, Earth has a gravitational force pulling on you right now and you have an equal attraction of gravity on the earth. Why doesn't the earth accelerate toward you?

a)

The earth is much more massive and requires much more force to make it move

b)

The forces are not equal

c)

The earth does accelerate towards you

d)

Gravity is an Illuminati conspiracy

26.
Inertia is the tendency of an object to resist a change in its ___________. 
a)
temperature
b)
shape
c)
size
d)
motion
27.
All objects have inertia, whether they are moving or not.
a)
True
b)
False
28.
Objects with greater _________ also have greater inertia.
a)
speed
b)
mass
c)
temperature
d)
friction
29.
Because of inertia, a resting object will remain at ________.
a)
rest
b)
a constant speed
c)
school
d)
inertia 
30.
Because of inertia, a moving object will keep ________.
a)
at rest
b)
moving
c)
in one spot
d)
inertia 
31.
To change the motion of an object, inertia must be overcome by a __________ acting on the object.
a)
temperature
b)
speed
c)
force
d)
velocity
32.
What happens when unbalanced forces act on an object at rest?
a)
the object remains at rest
b)
the object begins moving in an unpredictable direction
c)
the object begins moving in the direction of the net force
d)
the object begins moving opposite to the direction of net force
33.
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
34.

What is the net force on an object experiencing 100 N of applied force to the left and 50 N of friction?

a)

150 N

b)

50 N

c)

5000 N

d)

2 N

35.
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
36.
The equation to calculate momentum is
a)
p=mv
b)
p=1/2mv2
c)
p=mgh
d)
p=mg
37.
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
38.
An object with a mass of 2000 kg at rest has what momentum?
a)
2000 kg m/sec
b)
0 kg m/sec
c)
2000 kg
d)
2000 m/sec
39.

If an object has a mass of 20 kg and a velocity of 4 m/s, what is the momentum of the object?

a)

80 kgm/s

b)

4 kgm/s

c)

5 kgm/s

d)

.2 kgm/s

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