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101 Force Questions

Total questions: 100

Worksheet time: 5hrs 36mins

Name
Class
Date
1.

Force is measured in . . .

a)

Kilogram

b)

Newton

c)

m/s^2

d)

kg/m/s

2.
What is a force?
a)
the PUSH or PULL on an object 
b)
The MOTION an object creates
c)
The objects HITTING one another
d)
Going REALLY FAST
3.
What is the net force?
a)
17 N Right
b)
3 N Right
c)
3 N Left
d)
17 N Left
4.
Which one is balanced?
a)
top
b)
bottom
c)
both
5.
Is it BALANCED? 
a)
Yes
b)
No
6.
This is an example of what kind of force?
a)
Balanced Force
b)
Pushing Force
c)
Gravity Force
d)
Unbalanced Force
7.
Which direction will the object move?
a)
Up
b)
Down
c)
Right
d)
Left
8.
If the net force is 0 the object will ... 
a)
CHANGES motion
b)
STAY the SAME, NOT Move
9.

If the boy is pulling with a force of 10 N and the girl is pushing with a force 20 N, what is the net force on the box?

a)

10 N

b)

20 N

c)

30 N

d)

0 N

10.

A car braking is an exmaple of what type of force?

a)

Gravity

b)

Air Resistance

c)

Friction

11.

What is the name of the force that pulls you to the earth?

a)

Gravity

b)

Air Resistance

c)

Friction

12.

Rubbing a balloon on your head causes charge to build up on the balloon The balloon can then "stick" to the wall - what force is acting here?

a)

Gravity

b)

Electrostatic

c)

Friction

d)

Applied

13.

In the free-body diagram, which of the following is the gravitational force acting on the balloon?

a)

5120 N

b)

950 N

c)

1520 N

d)

4050 N

14.

Is the object in equillibrium?

a)

Yes

b)

No

c)

Not enough information

15.

If the object in this picture is in equilibrium, What is the force of friction?

a)

0

b)

12

c)

8

d)

4

16.
What Newtons law does this picture represent
a)
Newtons 2nd law 
b)
Law of gravity 
c)
Newtons 1st law
d)
Newtons 5th law
17.

The free body diagram of four boxes are shown below. Which box is in equilibrium?

a)
b)
c)
d)
18.

Your car has a mass of 2500 kg and a force of 5000 N. How fast will it accelerate?

a)

20 m/s2

b)

0.5 m/s2

c)

2 m/s2

d)

120 N

19.

If an object was accelerating at 5 m/s2, and a force of 10 newtons was required to accelerate it, what was the object's mass?

a)

50 kg

b)

2 kg

c)

0.5 kg

d)

5 kg

20.

What is the resultant force?

a)

17 N, Left

b)

6N, Right

c)

11N , Left

d)

12N, Left

21.

What is the proper setup of the gravitational force formula?

a)

Fg= Gm2/r

b)

F=ma

c)

Fg= Gr2/(m1+m2)

d)

Fg= G (m1m2)/r2

22.

What effect does increasing the distance between the two objects do to the gravitational force?

a)

The distance between two objects has no effect on the gravitational force

b)

It increases

c)

It stays the same

d)

It decreases

23.

When do gravitational forces exist between two objects?

a)

They only exist between microscopic objects.

b)

They are always present between any two objects.

c)

Gravitational forces only act on objects falling on Earth.

d)

They only exist for objects in space.

24.

Calculate the gravitational force between a 15-kg chinchilla and a 65-kg dog which are separated by 0.30 m.

a)

Fg = 3.7*10-8 N

b)

Fg = 1.3*1012 N

c)

Fg = 1.1*105 N

d)

Fg = 7.2*10-7 N

25.

What would the gravitational force be between the Sun and Mars if they were 2.3*1011 m apart? The masses for the Sun and Jupiter are 1.99*1030 kg and 6.42*1023kg, respectively.

a)

Fg = 3.8*1015 N

b)

Fg = 2.8*10-42 N

c)

Fg = 1.6*1021 N

d)

Fg = 4.6*10-75 N

26.

What does the variable G in the gravitational force equation represent? Fg = G m1 m2r2F_g\ =\ G\ \frac{m_1\ m_2}{r^2}  

a)

Universal gravitational constant

b)

Combined masses of the two objects

c)

Gravitational force

d)

Dielectric constant

27.

Which of the following changes would increase the gravitational force between two objects?

a)

Increase G

b)

Increase the mass

c)

Increase r

d)

Decrease G

28.

True or False: The gravitational force each tennis ball acts on the other is the same.

a)

True

b)

False

29.

What is the gravitational force between a 140 kg tree and a 798 kg Lotus Elise Sprint that are 15 m away?

a)

6.6*10-7 N

b)

4.8*104 N

c)

3.3*10-8 N

d)

7.4*1012 N

30.
Force the opposes motion between 2 surfaces
a)
force
b)
Newton
c)
friction
d)
net force
31.
What are the 2 types of friction discussed in the book?
a)
Static and Dynamic Friction
b)
Kinetic and Static Friction
c)
Kinetic and Dynamic Friction
d)
Dynamic and Moving Friction
32.
What are 2 factors that determine the amount of friction between 2 objects?
a)
Force and roughness between surfaces
b)
hills and valleys and how smooth or rough the surface is
c)
Amount of force and amount of surface the comes in contact
d)
The force and the weight exerted on the surfaces
33.
Which of the following is opposed by kinetic friction?
a)
A truck being pushed but not moving
b)
A box being pushed but not moving
c)
A box being pushed and sliding across the floor
d)
A wagon being pulled but not moving
34.
Which of the following is an example of friction that is helpful?
a)
Brakes used on a bike
b)
Tires from a car on the road
c)
Tread on the bottom of your shoes
d)
All are examples that are helpful
35.
Which of the following is an example of friction that is harmful?
a)
Pencil marking on paper
b)
Engine parts wearing out
c)
sand placed on ice in the winter
d)
Using an eraser to erase marks
36.
How can friction be reduced?
a)
reduce the force acting between the 2 surfaces
b)
reduce the roughness of the 2 surfaces coming in contact
c)
use wax, grease or oil
d)
all of the above are ways of reducing friction
37.
Which would NOT be a way of reducing friction?
a)
making the surfaces smoother
b)
using lubricants such as waxes, oils, or grease
c)
changing from sliding friction to rolling friction using ball bearings
d)
Using kitty litter on snow and ice to help your car gain traction
38.
Will the torque be increased by using the rope?
a)
A - Yes
b)
B - No
39.
Which will produce more torque to loosen the lug nut?
a)
A
b)
B
c)
They are the same
40.
Looking at the picture, which way will it rotate?
a)
Clockwise
b)
Counter clockwise
c)
Neither
41.
A small but hard nut must be crushed.  Which position will require more squeezing force by a hand?
a)
Position A
b)
Position B
c)
It doesn't matter which position the nut is in.
42.
Which requires more muscle strength (pull by the muscle) to lift a 25 pound dumbbell?
a)
An arm with a longer forearm
b)
An arm with a shorter forearm
c)
The length doesn't matter
43.
What is the weight of the package?
a)
5 N
b)
10 N
c)
15 N
d)
20 N
44.
What is the weight of the package?
a)
5 N
b)
10 N
c)
15 N
d)
20 N
45.
What is the weight of the package?
a)
5 N
b)
10 N
c)
15 N
d)
20 N
46.
When an object is experiencing a net torque
a)
it is in dynamic equilibrium.
b)
it is in static equilibrium.
c)
it is rotating.
d)
it is translating.
47.
If the torque required to loosen a nut on the wheel of a car has a magnitude of 60.0 N• m, what minimum perpendicular force must be exerted by a mechanic at the end of a 45.0 cm wrench to loosen the nut?
a)
.666 Nm
b)
 133.3 N
c)
66.7 N
d)
13.3 Nm
48.
What direction is the torque acting with respect to post A?
a)
clockwise
b)
Counter clockwise
c)
Neither Direction
d)
Depends on the mass of the diver
49.

A boy of weight 600N sits on the see-saw as shown at a distance of 1.5m from the pivot. What is the force F required at the other end to balance the see-saw?

a)

450 N

b)

350 N

c)

4.5 N

d)

200 N

50.

Two blocks are placed on a beam which balances on a pivot at its centre. The weight of the beam is negligible.

Which diagram shows the forces acting on the beam? (The length of each arrow represents the size of a force.)

a)
b)
c)
d)
51.

A uniform plank is pivoted at its mid-point. Two weights are added to the plank, one weight on each side of the pivot in the positions shown.

A vertical force is applied at point X to balance the plank. What is the size and direction of this force?

a)

2N Upward

b)

4N Upward

c)

2N downward

d)

4N downward

52.
What is the distance the masses on the right of the fulcrum need to be to balance with the two masses on the left?
a)
.65 m
b)
.56 m
c)
.79 m
d)
.39 m
53.
If I double the mass of one object, but don't change anything else... WHat happens to the gravitational force between two objects?
a)
Doubles
b)
Quadruples
c)
Cut in Half
d)
4x Smaller
54.
What happens to Gravitational force if I double both of the masses but don't change their distance?
a)
doubles
b)
half as big
c)
4x bigger
d)
4x smaller
55.
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
56.
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
57.
The law of universal gravitation is credited to whom?
a)
Einstein
b)
Galileo
c)
Darwin
d)
Newton
58.
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
59.

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

60.
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
61.

If the mass of either m1 or m2 is increased then the force of gravitation between them will...

a)

increase

b)

decrease

c)

stay the same

62.
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
63.
What is the net force?
a)
40 N left
b)
0 N Balalnced
c)
400 N right
d)
40 N right
64.

According to Newton's second Law, which would take more force to slow down?

a)

The silver car

b)

The green car

c)

They would both take the same force

65.
F=ma
a)
Newton's
1st
Law of Motion
b)
Newton's
2nd
Law of Motion
c)
Newton's
3rd
Law of Motion
66.
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 
67.
According to Newton's second law, if you increase the force applied to an object :
a)
it accelerates more
b)
it doesn't move
c)
you get more inertia
d)
it decelerates
68.
An object with a mass of 5.0 kg accelerates 8.0 m/s2 when an unknown fore is applied to it. What is the amount of the force?
a)
40 newtons
b)
40 kg
c)
1.6 newtons
d)
0.63 newtons
69.
An object accelerates 16.3 m/s2 when a force of 4.6 newtons is applied to it. What is the mass of the object?
a)
0.28 kg
b)
0.28 g
c)
74.98 kg
d)
74.98 N
70.

The force diagram for an object that is being dragged across the floor is shown to the right. The object is experiencing an acceleration of 2 m/s2 as it moves under the influence of the forces shown. Use the diagram to determine the force of friction acting on the object.

a)

The force of friction is 30 newtons.

b)

The force of friction is 50 newtons.

c)

The force of friction is 20 newtons.

d)

The force of friction is 150 newtons.

71.

After breaking up, Jane slapped John with a force of 15 N. But John did not slap back because he knows that he exerted the same amount of force on Jane. What concept supported the idea of John?

a)

Law of Inertia

b)

Law of Acceleration

c)

Law of Action-Reaction

d)

Law of Gravitation

e)

Conservation of Energy

72.

A 60.0-kg sprinter starts a race with an acceleration of 5 m/s2. What is the net external force on him?

a)

30 N

b)

300 N

c)

18 N

d)

180 N

73.

If object 1 is lighter than object 2 and they are both being pushed by THE SAME amount of force, which of the two will accelerate the most?

a)

The lighter (object 1) because the object's inertia in comparison to the heavier is easier to overcome hence, making object 1 speed up more than object 2.

b)

The heavier (object 2) because the more the inertia the more the object will accelerate

c)

They don't accelerate because they travel at the same rate

d)

They both have the same acceleration because the same amount of force is being exerted on the objects.

74.

The normal force is represented by the symbol

a)

N

b)

FK

c)

FN

d)

µK

75.

The coefficient of kinetic friction is represented by the symbol

a)

N

b)

FK

c)

K

d)

µK

76.

This free body diagram represents a box at rest on an inclined surface

a)
b)
c)
d)
77.

This free body diagram represents a box being pulled down the ramp by a force "F"

a)
b)
c)
d)
78.
Name the missing force...
a)
tension force
b)
gravitational force
c)
normal force
d)
applied force
79.
The sum of all forces acting on an object and direction
a)
Contact Force
b)
Balanced Force
c)
Unbalanced Force
d)
Net Force
80.
Are forces balanced or unbalanced when a marble speeds up rolling down a ramp?
a)
Balanced
b)
Unbalanced
81.
Ted is trying to move a fridge through his house, he gets stuck on a carpet and even though he is pushing the fridge, it is not moving. What force is acting against him?
a)
gravity
b)
friction
c)
air
d)
mass
82.
A push or pull exerted on an object
a)
Force
b)
Net force
c)
Momentum
d)
Speed
83.
Forces have both _________ and direction.
a)
Magnitude
b)
Gravity
c)
Speed
d)
Height
84.
Name the missing force...
a)
weight force
b)
normal force
c)
applied force
d)
frictional force
85.

A downward-moving skydiver who has just opened the parachute is slowing down.

a)
b)
c)
d)
86.

In a force diagram the size/length of the arrow tells you this about the force:

a)

the strength of the force

b)

the distance of the force

c)

the direction of the force

87.
Which is moving at a constant speed or not at all?
a)
a
b)
b
c)
c
d)
d
88.
Name the missing force...
a)
spring force
b)
weight force
c)
normal force
d)
buoyant force
89.
Name the missing force...
a)
applied force
b)
weight force
c)
lift
d)
normal force
90.
Name the missing force...
a)
normal force
b)
applied force
c)
frictional force
d)
tension force
91.

In the diagrams below, R stands for Reaction, W stands for Weight, T stands for Tension, P is an additional force and F stands for Friction.


Which of the force diagrams could represent a ball in free fall, if there is no air resistance?

a)

A

b)

B

c)

C

d)

D

e)

E

92.

In the diagrams below, R stands for Reaction, W stands for Weight, T stands for Tension, P is an additional force and F stands for Friction.


Which two force diagrams could represent a suitcase standing at rest on a smooth floor?

a)

A

b)

C

c)

D

d)

E

e)

F

93.
What type of force?
a)
Magnetic
b)
Gravitational
c)
Applied
d)
Normal
94.
What type of force is holding this balloon to the wall?
a)
Applied
b)
Gravitational
c)
Magnetic
d)
Electrical
95.
Name the missing force...
a)
frictional force
b)
weight force
c)
thrust
d)
buoyant force
96.
Name the missing force...
a)
tension force
b)
frictional force
c)
normal force
d)
spring force
97.
Friction acts in a direction __________ to the direction of the object’s motion.   
a)
Side By Side
b)
Parallel Directions
c)
 Opposite
d)
The Same Direction
98.

Check all of the forces that are acting on this object (Aang using his glider thing)

a)

FNF_N  Normal Force

b)

Ff=μFNF_f=\mu F_N  Frictional Force

c)

Gravitational Force

Fg=mgF_g=mg  

d)

TT  Tension Force

e)

FaF_a  Applied Force

99.

Check all of the forces that are acting on this object (the backpack)

a)

FNF_N  Normal Force

b)

Ff=μFNF_f=\mu F_N  Frictional Force

c)

Gravitational Force

Fg=mgF_g=mg  

d)

TT  Tension Force

e)

FaF_a  Applied Force

100.

Check all of the forces that are acting on this object (either of these good woofers)

a)

FNF_N  Normal Force

b)

Ff=μFNF_f=\mu F_N  Frictional Force

c)

Gravitational Force

Fg=mgF_g=mg  

d)

TT  Tension Force

e)

FaF_a  Applied Force

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