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Physics: HS 1st semester Flashcards | StudBud
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Physics: HS 1st semester
Physics: HS 1st semester
50 terms
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A series of questions that review the first semester of a high schools physics class
Flashcards
50 cards
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Practice quiz
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Questions
50
Answers
1
Mechanical Energy is NOT conserved in the presence of friction.
True
False
2
More force is required to move an object with more mass at the same acceleration.
True
False
3
The tendency of an object NOT to accelerate is:
Force
Time
Inertia
Gravitational force
4
Convert 5000 meters to kilometers
50 kilometers
0.0005 kilometers
500 kilometers
5 kilometers
5
Am object dropped from a moving plane appears to an observer on the ground as a.
stationary object
right angle
Parabola
straight line
6
Workers are trying to push a desk, what force is opposing them?
Normal Force
Gravitational force
Kinetic Friction
Static Friction
7
Graphs can help
improve artist skills
students use calculators
make predictions
make data easier to understand
8
In the formula F=ma, the force and acceleration are:
Inversely proportional
depends on direction
Directly proportional
not related
9
W
net
=ΔKE is the formula for
Conservation of energy
Pythagorean's theorem
Space/Time continuum
Work-Kinetic Energy Theorem
10
A moving object is at equilibrium if:
The object has no mass
Has positive acceleration
Has zero acceleration
Has negative acceleration
11
Multiple trials of an experiment will:
increase number of significant figures
create more science jobs
reduce errors
be a waste of time
12
An action-Reaction pair requires:
1 force and 2 objects
1 force and 2 objects
2 forces and 2 objects
1 force and 1 object
13
Physics equations describe:
word problems
prior math knowledge
relationships
14
If a ball rolls off a table, to determine where the ball lands, I need.
the ball's velocity
the ball's mass
the ball's velocity and the table height
the time of day
15
Acceleration like velocity has direction.
False
True
16
Kinetic friction is greater than static friction.
False
True
17
To find the x-component of a vector you multiply:
Magnitude by sinθ
By tan-1
Magnitude by cos θ
By the y-component
18
Quantum mechanics is the study of:
behavior of submicroscopic particles
particles moving at very high speeds
light
falling objects
19
An object falling towards earth is experiencing:
depends on mass
negative acceleration
postive acceleration
equilibrium
20
Velocity measurements differ in different frames of reference.
True
False
21
How many meters are in one kilometer?
100
1000
10
500
22
The rate at which work is done is called
Net Work
Velocity
Conservation of energy
Power
23
A calculator will always give you the correct number of significant figures.
True
False
24
I can do more work in less time with the same amount of power.
True
False
25
Distance and displacement are always equal.
False
True
26
Any hypothesis must be tested with a controlled experiment.
True
False
27
A scientific conclusion doesn't have to be tested by others to be valid.
False
True
28
Multiplying or dividing vectors by scalars results in:
scalars
triangles
zero displacement
vectors
29
Displacement divided by time equals.
change in postion
average velocity
acceleration
always zero
30
Inertia is dependent on what property?
Time
Mass
Velocity
Weight
31
How many cm are in a meter?
100 cm
10 cm
1000 cm
32
Estimating your answer based on the variables will:
Check if your answer is reasonable
Make solving the problem longer
Test your math skills
33
Normal force is increased when the object is placed on an inclined plane.
False
True
34
The rate of acceleration of free falling bodies in a vacuum:
increases with mass
is slower than object falling in air
does not vary because of mass
is affected by air resistance
35
A free body diagram does NOT contain
Forces acting on the object
Forces created by the object
The object
The direction of the forces acting on the object
36
A word problem contains 17, 5.0 and .25. How many significant figures does the answer need?
2
4
3
1
37
A pilot reads his airspeed as 300kph north, but his ground speed as 320kph north. The wind is blowing at
unable to determine
20 kph south
20 kph north
20 kph east
38
Final velocity depends on initial velocity
False
True
39
As the time interval becomes smaller average velocity:
equals acceleration
approaches instant velocity
time is stretched
becomes lass accurate
40
Forces can only act when in contact with an object.
True
False
41
The sum of forces acting on an object is the field force.
True
False
42
Stu Dent is pulled a crate 50m with a force of 50n at 30
0,
which formula is used to determine work?
W=mgd/Δt
W=Fd
W=mgd(cosθ)
W=Fd(cosθ)
43
The
RATE OF CHANGE
of velocity is called:
Average velocity
acceleration
speed
time of displacement
44
Which is a scalar quantity.
velocity
mass
acceleration
displacement
45
If an objects velocity is positive and its acceleration is negative:
unable to determine
it is gaining velocity
it is losing velocity
The object is not moving
46
A
2
+B
2
=C
2
is known as
∑Force
Pythagorean's Theorem
The resultant of sums
ΔTime
47
Adding a vector to a vector results in a
positive displacement
scalar
vector
negative displacement
48
The SI unit of weight is:
pound
kilogram
gram
ounce
49
The mean of a data set is calculated by
picking the value that is inconsistent
finding the center value
add the values, divide by number of values
picking the value that repeats
50
A kicked soccer ball's path is described as a:
parabola
triangle
straight line
free fall
