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Physics Honors Winter Final
Physics Honors Winter Final
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Flashcards
70 cards
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Questions
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Answers
1
What is the vector sum of all the forces acting on an action?
equilibrium
unbalanced force
balanced force
net force
2
What is the second step of the scientific method?
Theory
hypothesis
interference
experiment
3
What is gravitational potential energy due to?
Motion
Mass
Height
Potential energy
4
True or False: The joule is the basic unit for power.
False
True
5
The rate at which an object moves through the atmosphere with no external forces acting on it.
free fall acceleration
gravity
air resistance
drag force
6
How are the vertical and horizontal motions of a projectile related?
They are directly proportional
Inversely proportional
They are equal
no correlation
7
The speed of an object at a specific point in its path when the object heads north
instantaneous velocity
instantaneous acceleration
speed
velocity
8
9.81 m/s
2
the acceleration of a ball tossed up into the air.
the force of gravity
the acceleration value when an object falls from the sky.
the value of gravity on the moon
9
What is 385 lbs?
force
weight
mass
gravity
10
An object at rest or moving at a constant velocity is said to
have balanced forces acting on it
be in equilibrium
have unbalanced forces acting on it
out of phase
11
You apply a force over a time period to change an objects momentum. You are utilizing
the impulse momentum theorem
p=mv
Ft = mv
I = Ft
12
Which of these concepts were displayed in the rocket balloon challenge?
Newton's Laws of Motion
power
Pythagorean theorem
centripetal force
13
Vector sum of all fores acting on an object
Total Force
Net Force
14
What is inertia?
The tendency of an object to resist change in motion
Acceleration
Friction
Gravity
15
Which of the following are vector quantities?
distance
Force
acceleration
displacment
16
The position time graph shows velocity in what direction?
Negative
At rest
Positive
All directions
17
During a lab, you collect data that reflects the accepted value. This is called
accuracy
precision
theory
dependent value
18
Which of the following are scalar quantities?
velocity
speed
mass
time
19
The path that a projectile takes is a
trajectory
straight
parabolictory
inconsistant
20
In F = ma, when you double mass, what happens to the force? What is the relationship?
This is an inverse relationship
This is a linear relationship
its doubles
it is reduced by 2
21
The change in position of an object
velocity
displacement
momentum
distance
22
Which of the following are variables?
a
m/s
P
s
23
Which of the following is true of the conservation of energy in a closed system?
Mechanical Energy is always conserved.
PE is always conserved
Total energy is always conserved.
KE is always conserved
24
When is the net force zero?
Balanced force
Unbalanced Forces
equilibrium
Never
25
The sum of all mechanical and non-mechanical energy is
total energy
mechanical energy
the Work-Kinetic Energy Theorem
net energy
26
What is the force that resists motion between two objects at rest?
kinetic friction
air pressure
tension
static friction
27
What is a form of non-mechanical energy?
Mechanical
Nuclear
Work
Elastic Potential
28
Which of the following are units?
N
v
kg
F
29
Which is not the unit of main dimension used in physics?
s
m/s
m
kg
30
A ball rolls on a friction less surface at a constant velocity. This is which of Newton's Laws
Second
Third
First
all of them
31
Covert 2.8 hours to second.
10 086
10 080
10 000
9360
32
What is the velocity of a ball at its maximum altitude?
1337 m/s
0 m/s
420 m/s
9.81 m/s
33
What does the first graph show?
An object moving at a constant velocity
An object moving in the positive direction
An object accelerating
An object at rest
34
A merry-go-round is rotating fast. Sam is on the outside. Sue is on the inside. What's true?
Sue and Sam have the same tangential speed.
Sam has a higher tangential speed
Sam has a higher rotational speed
Sue and Sam have the same rotational speed.
35
Which of these is a field force?
air resistance
friction
tension
electromagnetic
36
The position time graph is ( ).
Negative
At rest
Red
Positive
37
During a lab you collect his data for gravity: 8.76 8.88, 8.81, 8.79 and 8.83. You data is
not accurate
precise
accurate
not precise
38
During a free fall lab, you collect this data: 9.81, 9.85, 9.80 and 9.78. Describe your data:
precise but not accurate
precise
accurate but not precise
accurate
39
To find mechanical energy, you ___ kinetic and potential energy.
Divide
Add
Multiply
Subtract
40
What do you neglect in the law of conservation of mechanical energy?
Friction
Energy
Power
Heat
41
What does the average HS physics student most likely weigh?
720 N
175 lbs
160lbs
73 kg
42
Which of the following is measured by derived unit?
joule
force
mass
time
43
After five seconds, the object represented by the position time graph is ( ).
Has transcended and ascended to Valhalla
At rest
Accelerating in the positive direction
Accelerating in the negative direction
44
Why is your weight less on the moon?
the force of gravity is different
the air is thicker
your mass changes
you get more exercise on the Moon
45
The overall amount an object travels
location
position
distance
displacement
46
In F = ma, when you double mass, what happens to the acceleration? What is the relationship?
doubles
reduced by 2
Inverse relationship
Linear relationship
47
What is the derived unit of force?
F
m/s2
N
Kg
48
True or False: Potential energy is associated with position, shape and condition.
False
True
49
You are running to get to your next class and you knock over your best friend. Which is true?
You lost momentum
Kinetic energy was conserved
During the collision, momentum was conserved.
Your friends momentum was conserved
50
A measure of the quantity of matter is
weight
density
force
mass
51
What are forces that cause objects to change motion?
Net Force
Unbalanced Forces
Balanced Forces
Equilibrium
52
250N=(5m/s
2
)m what is the unit of m?
distance
meters
mass
kilograms
53
What is this an example of: I shove Sonia and Sonia falls over?
Friction
Push/pull
Air Resistance
Normal
54
What is the definition of work?
A watt
The rate at which work is done
Minimum energy needed to remove electrons from a metal atom
When you apply a force to displace an object.
55
What is the ball's acceleration during its time in the air?
0 m/s^1
1337 m/s^2
True
-9.81 m/s^2
56
During a lab you collect his data for gravity: 9.98, 8.88, 10.76, 6.89 and 5.34. You data is
precise
not precise
not accurate
accurate
57
T/F: Net work on all forces acting on an object = to the change in the objects kinetic energy
False
True
58
A Watt is derived from
power
a second
work
a Joule
59
What causes an object to resist a change in motion?
Newton's third law
equilibrium
inertia
strong nuclear force
60
What does Newton's second Law state mass is directly proportionate to?
distance
velocity
acceleration
force
61
N is equal to
kg m2/s2
kg m/s2
kg m
kg m/s
62
What is the SI unit for power?
Joule
Kg
Watt
M/S
63
Which of Newton's Laws explains why you bounce back up when you jump on a trampoline?
Second
First
Third
All of them
64
Shows all the forces acting on a single object
Interaction Pairs
Newtons second law
Free-body diagram
Inertia
65
If I dont wear a seatbelt in a moving car and hit the brakes,why will I fly through the window?
Newtons Third Law
Newtons First Law
Newtons Second Law
66
Joule is the unit for
Work
Kinetic Energy
Power
Potential Energy
67
The magnitude is defined as
the unit of a moving object
the distance an object travels
the brilliance of an object
the amount or size of something
68
Kinetic energy is energy due to
Power
Potential Energy
Motion
Shape
69
What does the first graph show?
An object at rest
An object accelerating.
An object moving in the negative direction
An object moving at a constant velocity
70
What are field forces?
Involves physical contact
Friction
Tension
Doesn't involve physical contact between two objects
