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Dynamics Review Game

Total questions: 102

Worksheet time: 2hrs 19mins

Name
Class
Date
1.
According to Newton’s first law of motion, a moving object that is not acted on by an unbalanced force will
a)
remain in motion.
b)
eventually come to a stop.
c)
change its momentum.
d)
accelerate.
2.
A sled sliding on a flat, icy surface with a constant velocity is best described by
a)
Newton’s first law of motion for objects at rest.
b)
Newton’s first law of motion for objects in motion.
c)
Newton’s second law of motion.
d)
Newton’s third law of motion.
3.
Which law explains when a magician pulls a tablecloth out from under dishes and glasses on a table without disturbing them.
a)
Law 1
b)
Law 3
4.
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.
5.
A person in car  slides to the right when going through a very sharp left turn on the highway. 
a)
1st Law
b)
2nd Law
c)
3rd Law
6.
What is the definition of "weight"?
a)
the force in which gravity pulls on an object
b)
the time it takes to get on a ride 
c)
the amount of matter in an object
d)
the size of an object
7.
An object will not have any inertia if it is __________?
a)
Accelerating
b)
Moving in a circle
c)
In space
d)
… Nonsense! All objects have inertia
8.
 267.5 N unbalanced force applied to push a stuffed chair across the room, causing an acceleration of 4.2 m/s2. What is the mass of the chair?
a)
26.75 kg
b)
63.69 kg 
c)
263.3 kg 
d)
1123.5 kg
9.
To test Newton’s law of gravity, Ben and Jerry climbed the football stadium at school and dropped an egg from the very top of the bleachers. Their egg dropped data can be seen in the table According to this data, What conclusion can the boys make regarding Newton’s law of gravity?
a)
a)  No conclusion can be drawn from the data
b)
a)  The acceleration due to gravity is not constant
c)
a)  The acceleration due to gravity of 9.8 m/s2 is refuted
d)
a)  The acceleration due to gravity of 9.8 m/s2 is supported
10.
Which of these best describes why your weight (on Earth) would change on another planet?
a)
weight doesn’t change, no matter where you are
b)
different planets have different gravitational pulls
c)
In general, the smaller the planet, the greater weight
d)
dehydration effects on different planets change weight
11.
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
12.

A push or a pull on an object

a)

Force

b)

Gravity

c)

Inertia

d)

Friction

13.

The tendency of an object to maintain a constant velocity

a)

Inertia

b)

Force

c)

Weight

d)

Tension

14.

A force exerted by a surface perpendicular to the surface.

a)

Normal

b)

Friction

c)

Gravity

d)

Tension

15.

A force that resists an object's motion

a)

Friction

b)

Gravity

c)

Normal

d)

Tension

16.

A pulling force exerted along a rope, string, wire, cable...

a)

Friction

b)

Gravity

c)

Normal

d)

Tension

17.

The gravitational attraction between an object and the Earth.

a)

Friction

b)

Weight

c)

Normal

d)

Tension

18.

Which of Newton's Laws describes the relationships between Force, mass and acceleration.

a)

1st

b)

2nd

c)

3rd

19.

Which of Newton's Laws says that objects tend to maintain a constant velocity unless acted on by an unbalanced force.

a)

1st

b)

2nd

c)

3rd

20.

Which of Newton's Laws states that forces always come in pairs that are equal and opposite to one another.

a)

1st

b)

2nd

c)

3rd

21.

A swimmer pushes backward on the water in order to move forward. This is an example of Newton's ________ Law.

a)

1st

b)

2nd

c)

3rd

22.

When a driver slams on the brakes, passengers fly forward. This is an example of Newton's ________ Law.

a)

1st

b)

2nd

c)

3rd

23.

Which is the correct "Reaction Force" if the "Action Force" is George pushing Fred to the East on a swing?

a)

Fred pushes George West.

b)

Fred moves forward.

c)

George pushes Fred to the West.

d)

Fred pushes George to the East.

24.

Which force does NOT belong in a Free-Body diagram for a steel beam being lifted by a cable?

a)

Normal Force

b)

Tension

c)

Gravity

25.
If you double the mass of an object with the same force apply on it, the acceleration will
a)
double
b)
cut in half
c)
the same
d)
zero
26.
What kind(s) of objects have inertia?
a)
all objects with mass
b)
only objects at rest
c)
only objects in motion
d)
only objects whose motion is being changed
27.
Which one needs a greater net force to move, a kilogram of feathers or a kilogram of iron? 
a)
feathers 
b)
iron
c)
same
d)
depends on their friction
28.
After a cannonball is fired into frictionless space, the amount of force needed to keep it going equals
a)
twice the force with which it was fired
b)
the same amount of force with which it was fired
c)
1/2 the force with which it was fired
d)
zero, since no force is required to keep it moving. 
29.
The acceleration produced by a net force on an object is
a)
inversely proportional to the mass of the object.
b)
directly proportional to the magnitude of the net force.
c)
in the same direction as the net force.
d)
 all of the above
30.

A 10-kg brick and a 1-kg book are dropped in a vacuum. The Fg (weight) on the 10-kg brick is

a)

10 times as much as the force on the 1-kg book

b)

zero.

c)

the same as the force on the 1-kg book.

d)

none of the above

31.
A book weighs 4 N. When held at rest in your hands, the net force on the book is
 
a)
0 N.
b)
 0.4 N.
c)
 4 N.
d)
 39 N.
32.
A 20 kg bike accelerates at 10 m/s2.  what was the net force
a)
25 Newtons
b)
20 Newtons
c)
200 Newtons
d)
10 Newtons
33.
When a cannon fires a cannonball we observe Newton's third law. Which force is the reaction force?
a)
The cannon moving forward
b)
The cannonball moving forward
c)
The cannon moving backward
d)
The cannonball moving backward
34.
Which one of Newton’s Laws of Motion best explains why the dishes do not move when the table cloth is removed?
a)
Newton's 1st Law
b)
Newton's 2nd Law 
c)
Newton's 3rd Law 
d)
Newton's Law of Biology
35.
The tendency of an object to stay in motion or at rest is called 
a)
velocity
b)
acceleration
c)
speed
d)
inertia
36.
What is the difference between mass and weight?
a)
mass is how much matter is in an object, and weight is the gravitational pull on that object
b)
mass and weight are the same
c)
weight affects how much mass is in an object
d)
weight is determined by how many atoms make up an object
37.
What is the net force?
a)
5000 N right
b)
4000 N right
c)
40 N left
d)
4000 N left
38.
What is happening at C?
a)
Stationary
b)
Accelerating
c)
Fast steady speed; moving away from the starting position
d)
Slower steady speed; moving away from the starting position
39.
Which of the following shows the direction of the friction force?
a)
A
b)
B
c)
C
d)
D
40.
Which of Newton's laws includes the formula: Force = mass x acceleration?
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
41.
Which of Newton's Laws deals with Action/Reaction pairs?
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
42.
Which law is also known as the Law of Inertia?
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
43.
Name the missing force....
a)
weight force
b)
normal force
c)
frictional force
d)
tension force
44.
Name the missing force...
a)
buoyant force
b)
normal force
c)
weight force
d)
frictional force
45.
Name the missing force...
a)
spring force
b)
weight force
c)
normal force
d)
buoyant force
46.
Name the missing force...
a)
tension force
b)
frictional force
c)
normal force
d)
spring force
47.
Name the missing force...
a)
frictional force
b)
weight force
c)
thrust
d)
buoyant force
48.

What is the NET FORCE of this diagram?

a)

17 N, right

b)

17 N, left

c)

23 N, right

d)

12 N, up

49.

What is a Free Body Diagram?

a)

Visual representation of force

b)

Visual representation of objects

c)

Visual representation of force and objects interactions

d)

Visual representation of gravity

50.

In a Free Body Diagram, individual objects or members are ___________.

a)

Isolated

b)

In their natural environment/system

c)

Components

d)

Composites

51.

How is a force represented in a Free Body Diagram?

a)

A straight line with an arrowhead

b)

A curved line with an arrowhead

c)

An arc with an arrowhead

d)

Multiple lines with arrowheads

52.

When an object has no motion or is stationary it is (a)  

53.

What is the net force for the following scenario. 100 N going left and 25 N going right.

a)

125N

b)

75N

c)

75N left unbalanced

d)

75N left balanced

54.

Calculate the net force for the diagram.

a)

800 N down unbalanced

b)

600N down balanced

c)

400 N down unbalanced

d)

400 N up unbalanced

55.

Calculate the net force for the diagram.

(a)  

56.

What is the Net force in this diagram?

a)

The forces action on the object.

b)

The combination of forces acting on the object.

c)

The size of the arrows.

d)

The size of the circle.

57.
Which of the following is true about the system shown?
a)
The system is not accelerating.
b)
The tension between m2 and m1 is less than the tension between m2 and m3
c)
The acceleration of the system only depends on m3
d)
None of the other answers are true
58.

Which of the following statements is true about the image above?

a)

The accelerations of the blocks will vary according to their mass

b)

The net force acting on each block is the same

c)

The blocks will experience the same acceleration

d)

The 3m box will eat the 2m and the m boxes

59.

Calculate the resultant vertical force on the fish.

(a)  

60.

A leftward-moving car is skidding to a stop across a level roadway with locked wheels. Ignore air resistance.

Which force is stronger?

a)

Friction force

b)

Normal force

c)

Applied force

d)

They are all the same

e)

Gravity force

61.

A downward-moving skydiver is falling with constant speed.

Which force is stronger?

a)

Friction force

b)

Normal force

c)

Applied force

d)

They are all the same

e)

Gravity force

62.
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.
63.
What will cause an object to move?
a)
Applied forces
b)
Balanced forces
c)
Unbalanced forces
64.

What is the force on a 1000 kg elevator that is falling freely at 9.8 m/sec2

a)

102.04 n

b)

9,800 n

c)

980 n

d)

103 n

65.
A 50 kg skater pushed by a friend accelerates 5 m/sec2.  How much force did the friend apply?
a)
45 N
b)
15 N 
c)
10 N
d)
250 N
66.
What is the acceleration of a 50 kg object pushed with a force of 500 newtons?
a)
100 m/s2
b)
25,000 m/s2
c)
10 m/s2
d)
25 m/s2
67.
A force of 250 N is applied to an object that accelerates at a rate of 5 m/sec2.  What is the mass of the object?
a)
100kg 
b)
1,250kg
c)
50kg
d)
5kg
68.
You give a shopping cart a shove down the isle. The cart is full of groceries and has a mass of 18 kg. The cart accelerates at a rate of 3 m/s2. How much force did you exert on the cart?
a)
6N
b)
54N
c)
21N
d)
18N
69.
A cannonball with a mass of 0.5 kg is flying at an acceleration of 10 m/sec/sec. What is it's force?
a)
50 Newtons
b)
5 Newtons
c)
20 Newtons
d)
9.5 Newtons
70.

If the net force (Fnet) is 0, _____

a)

the forces are balanced.

b)

the object just keeps doing what it was doing.

c)

the object maintains its same speed and direction.

d)

the object maintains its velocity.

e)

the object does not speed up, slow down, or turn.

71.

If the net force is not 0, _____

a)

the forces are not balanced.

b)

the object changes what it is doing.

c)

the object changes its velocity.

d)

the object accelerates.

72.

Velocity has both _____ and _____.

a)

mass and direction

b)

speed and acceleration

c)

speed and direction

73.
The Earth pulls downward on a pingpong ball with a force  of 1N. If this is the "action" force, what is the "reaction" force?
a)
The ground exerts a force of 1N on the ping pong ball
b)
The ping pong ball exerts a force of 1 N on the Earth
c)
The ping pong ball pushes down on the earth with a force of 1N
d)
The is no reaction force when a gravitational force is involved
74.
A 80 kg skydiver is free falling at a constant velocity of 19 m/s. What is the net (total) force acting on her?
a)
1,520 N
b)
0 N
c)
4.21 N
d)
Not enough information to answer
75.

A 31-kg mass is accelerated by a net force of 81 N. What is the acceleration of the mass?

a)

2.6 m/s2

b)

10 m/s2

c)

0.39 m/s2

d)

0.25 m/s2

e)

4 m/s2

76.

How much does a 29-kg weigh on the surface of the moon (where the acceleration of gravity is 1/6th that of Earth)?

a)

47.4 N

b)

284.2 N

c)

19.6 N

d)

290 N

e)

4.8 N

77.
Two people are pushing a disabled car. One exerts a force of 200 N east, the other a force of 150 N east. What is the net force exerted on the car?
a)
50 N east
b)
350 N east
c)
50 N west
d)
350 N west
78.
Mrs. Moran and Mr. Moran decided to move the cabinet in their dining room.  Mrs. Moran stood on one side, and Mr. Moran stood on the other.  They each pushed with 30 N of force.  What was the net force on the cabinet?
a)
0 N
b)
60 N
c)
30 N
d)
90 N
79.
Two teams were having a tug of war.  Team A had four people on the team, and each of them pulled with 25N of force.  Team B had three people on the team, and each of them pulled with 35 N of force.  Which team won, and how much greater was their net force on the rope?
a)
Team B by 5 N
b)
Team B by 30 N
c)
Team A by 20 N
d)
Team B by 65 N
80.
Calculate the Acceleration.
a)
8
b)
1
c)
.125
d)
5
81.
The mass of a large car is 1000 kg.  The car accelerates at a rate of 3 m/sec2? If the car’s engine generates a 2800 N force forward, calculate the force of friction.
a)
- 200 N
b)
- 2800 N
c)
- 5.8 N
d)
8.4 N
82.
A net force of 250 N is applied to an object that accelerates at a rate of 5 m/sec2.  What is the mass of the object?
a)
50 kg
b)
245 kg
c)
.02 kg
d)
25.5 kg
83.
An object of mass 30 kg is falling in air and experiences a force due to air resistance of 50 newtons.  Calculate the acceleration of the object.
a)
-8.1
b)
-.666
c)
-11.5
d)
-.83
84.
A 2 Kg box is put on the surface of an inclined plane (ramp) at 27 ° with the horizontal. The surface of the inclined plane is assumed to be frictionless. Determine the acceleration a of the box down the plane.
a)
4.5
b)
17.8
c)
8.7
d)
0
85.
An elevator accelerates upward at 2.0 m/s2, as illustrated in the diagram below:
The passenger has a mass of 85 kg.  Calculate the force the floor exerts on the passenger.
a)
1003 N
b)
0 N
c)
833 N
d)
663 N
86.
An elevator accelerates at -2.0 m/s2, as illustrated in the diagram below:
The passenger has a mass of 85 kg.  Calculate the force the floor exerts on the passenger.
a)
1003 N
b)
0 N
c)
833 N
d)
663 N
87.
An elevator is moving up at a constant velocity of 2.5 m/s,as illustrated in the diagram below:
The passenger has a mass of 85 kg.  Calculate the force the floor exerts on the passenger.
a)
1045.5 N
b)
0 N
c)
833 N
d)
620.5 N
88.

What is the mass of an object being pushed with a net force of 10 N at 1.5 m/s2?

a)

7.50 kg

b)

15.0 kg

c)

6.67 kg

d)

2.25 kg

89.

A box with a weight of 35 N is experiencing a force of friction of 5 N. What is the coefficient of friction?

a)

7.0

b)

0.14

c)

40.0

d)

175.0

90.

You are trying to push a box for exercise. Which surface should you push the box across to get the greatest friction and, therefore, best workout?

a)

Carpet

b)

Tile

c)

Ice

d)

Wooden floor

91.

In what way can friction be reduced?

a)

By keeping the area dry

b)

By adding a lubricant like oil

c)

By pushing instead of rolling

d)

increase the surface area

92.

Which of these is an example of sliding friction?

a)

a badminton shuttlecock flying over the net

b)

a basketball rolling across a wooden floor

c)

a flying kite pushed by a gentle breeze

d)

a hockey puck moving across the ice

93.

Which is not a way to reduce friction?

a)

Add more force

b)

Add oil or another type of lubricant

c)

Replace rolling with sliding

d)

Smooth the surface

94.
 What is the force of friction between a block of ice that weighs 950 N and the ground if μ = .12? 
a)
65 N
b)
226 N
c)
175 N
d)
114 N
95.
What is the coefficient of static friction if it takes 44 N of force to move a box that weighs 86 N? 
a)
0.78
b)
0.51
c)
0.78 N
d)
0.58 N
96.
A box takes 40 N to start moving when the coefficient of static friction is .54. What is the weight of the box? 
a)
81 N
b)
18 N
c)
98 N
d)
74 N
97.
What are the units on the coefficient of friction?
a)
none
b)
Newtons
c)
meters
d)
kilograms
98.
What is the coefficient of static friction for steel on steel?
a)
0.57
b)
0.74
c)
0.42
d)
0.53
99.
What type of friction is not moving?
a)
static
b)
sliding
c)
fluid
d)
rolling
100.
How would the absence of friction affect a marble traveling on a long, straight path?
a)
The marble’s speed would decrease.
b)
The marble’s speed would increase.
c)
The marble would stop immediately. 
d)
The marble would remain at constant speed.
101.

A frictional force acts _____.

a)

parallel to a supposting surface

b)

perpendiculat to a spporting surface

c)

at an angle between 0 degrees and 90 degrees from a supporting surface

d)

only when an object is at rest

102.

What is teh relationship between the force of static friction and the force of kinetic friction between two surfaces?

a)

Static frictional force is always greater.

b)

Kinetic frictional force is always greater.

c)

Static and kinetic frictional forces are always equal.

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