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Physics Semester 1 Review! Flashcards | StudBud
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Physics Semester 1 Review!
Physics Semester 1 Review!
50 terms
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covering motion and forces
Flashcards
50 cards
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Practice quiz
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Questions
50
Answers
1
What is a confident statement
conclusion
get in the truck
hypothesis
prediction
2
SI base unit for time is
hour
Day
minute
second
3
Which is a vector?
volume
Scalar
velocity
temperature
4
A measure of the quantity of matter?
density
force
weight
mass
5
What is the symbol for mass
F
M
a
m
6
When there is no air resistance, objects of different masses dropped from rest
fall with equal accelerations and with equal displacements.
fall with different a and with different displacements.
fall with different accelerations and with = displacements
fall with equal a and with different displacements.
7
During which interval is the cat at rest?
0.0-5.0 s
5.0-10.0 s
15.0-20.0 s
10.0-15.0 s
8
Which of the following is the tendency of an object to maintain its state of motion?
inertia
velocity
accleration
force
9
What causes acceleration?
stress
inertia
unbalanced forces
velocity and speed
10
Which is a scalar?
Temperature
momentum
displacement
Velocity
11
What causes acceleration
force
motion
inertia
it is impossible to tell
12
The cat has the fastest speed during which interval?
15.0-20.0 s
5.0-10.0 s
10.0-15.0 s
0.0-5.0 s
13
A car with and initial velocity of 5 m/s, accelerates to 20 m/s in 5 s, what is a?
5 m/s2
3 m/s2
3 m/s
9.8 m/s2
14
Which of the following may be classified as projectile motion?
a punted football
all of the above
a teacher throwing a tennis ball in class
a thrown baseball
15
Which of the following quantities used to describe motion is an example of a vector quantity?
speed
time
distance
average velocity
16
What is the path of a projectile?
no path
wavy line
hyperbola
parabola
17
The normal force
opposite of force gravity
is a scalar quantity.
equals Fg in magnitude.
does not exist
18
The Greek letter Δ indicates a(n)
inverse proportion.
direct proportion.
sum or total.
difference or change.
19
A centripetal force always acts...
away from the center of the circular path
in a curved path
toward the center of the circular path
tangent to the circular path
20
Objects move in circular paths due to the influence of a...
centripetal force
frictional force
normal force
gravitational force
21
Horseplay and practical jokes in the laboratory are
Always ok
Never dangerous
Ok if you are working alone
Always against the rules
22
What is the speed of an object at rest?
0 m/s
9.8 m/s
5.757 x 101
8.8 m/s
23
In which situation is the net force acting on a car zero?
The car maintains both its speed and direction.
The car increases speed and changes direction.
The car increases speed but does not change direction.
The car maintains its speed but changes direction.
24
According to Newton's second law, when the same force is applied to 2 objects of different mass
They will accelerate at the same rate
the friction force takes the place of the grav. force
smaller mass, large acceleration
large mass, large acceleration
25
In a vacuum all objects fall at the same rate
false
True
26
Which of the following is the tendency of an object to maintain its state of motion?
force
velocity
accleration
inertia
27
Who is father of modern physics?
Albert Einstein
Apollo
Isaac Newton
Galileo
28
A rotating bucket of water is an example of
mars
Centripetal force
Earth
momentum
29
Acceleration due to gravity is also
displacement
floating
free fall
negative velocity
30
Any two masses experience a ___ force between them at all times.
gravitational
magnetic
romantic
electrical
31
Two forces act on an object. The magnitude of the net force acting on the object
equals the vector sum of the two forces.
equals the difference in the magnitudes of the two forces.
cannot be determined from the given information.
equals the average of the two forces.
32
Which is an example of Newton's third law
a rock at the top of a cliff
a rocket launch
universal speed limit
a rock falling off a cliff
33
A scientific law
can be broken
can be bent
cannot be broken
only applies to humans
34
Acceleration is
change in velocity
Displacement
always 0
velocity
35
What two factors affect momentum?
mass and velocity
force and distance
make and model
the shape of the object
36
action and reaction is
inertia
F=ma
Newton's 2nd law
Newton's third law
37
You feel a sense of weight due to the...
delta force
friction force
gravitational force
normal force
38
Value of free fall?
weight
9.8 m/s2
10 m/s2
25
39
Which of the following situations represents a negative displacement?
A cat jumps from a tree limb to the ground.
A cat jumps from the ground onto a tree limb.
A cat stands on a tree limb.
A cat jumps from a lower tree limb to a higher one.
40
Newton discovered gravity
false
true
41
A racecar at rest accelerates to 40 m/s in 10 s. What is the acceleration
0 m/s
120 meters
4 m/s2
20 m/s2
42
Another name for the gravitational force on an object due to the Earth's influence is...
coefficient of static friction
weight
inertia
mass
43
The SI base unit used to measure mass is the
second
kilogram
liter
meter
44
what type of force does a rope have?
the Jedi
gravity
friction
tension
45
In addition to displacement, what else is needed to find average velocity?
the resultant of the vector.
Force
mass
change in time
46
What is the study of the natural world?
Psychology
Biology
Physics
Chemistrty
47
A volleyball player taps a volleyball well above the net. The ball’s speed is least
just before it strikes the ground.
just after it is tapped by the player.
at the highest point of its path.
when the horizontal and vertical components of its v are =.
48
A net force of 5 N acting on a mass of 2 kg produces an acceleration of...
10 m/s/s
zero - net forces do not produce accelerations
2.5 m/s/s
3 m/s/s
49
When a car’s
v
is positive and its
a
is negative, what is happening to the car’s motion?
The car travels at constant speed.
The car slows down.
The car speeds up.
The car remains at rest.
50
The two variables that determine the range of a projectile are...
vertical speed and gravitational acceleration
height above the Earth and gravitational force
horizontal speed and gravitational acceleration
launch speed and launch angle
