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Duplicate of Physics Midterm Review
Duplicate of Physics Midterm Review
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Motion
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Questions
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Answers
1
Which are simultaneous equal but opposite forces resulting from the interaction of two objects?
gravitational forces
action-reaction pairs
field forces
net external forces
2
Round 678.90 to two significant figures
670
6.80
679
680
3
At what point of the ball’s trajectory is the vertical component of the ball’s velocity zero?
C
B
D
A
4
A change in the gravitational force acting on an object will affect the object’s
mass
weight
inertia
coefficient of friction
5
When dropped at the same height in a vacuum, which would fall faster- a leaf or a stone?
the leaf
the stone
they would accelerate at the same rate
need more information
6
Which of the following is a physical quantity that has magnitude and direction?
resultant
component
a vector
a scalar
7
At which point is the ball's speed about equal to the speed at which it was tossed?
B
D
C
A
8
If a nonzero net force is acting on an object, then the object is definitely
moving at a constant velocity
losing mass
being accelerated
at rest
9
According to the graph, the cat has the fastest speed during which interval?
10.0 - 15.0 s
5.0 - 10.0 s
15.0 - 20.0 s
0.0 - 5.0 s
10
Acceleration is defined as
a rate of displacement
the change in velocity
the rate of change of velocity
the rate of change of displacement
11
Describe the accuracy and precision of the data points.
Low Accuracy, High Precision
High Accuracy, Low Precision
Low Accuracy, Low Precision
High Accuracy, High Precision
12
The variable that is changed by the scientist in an experiment is the...
dependent
independent
placebo
control
13
What are the units of the coefficient of friction?
N2
N
1/N
The coefficient of friction has no units
14
Identify the following quantities as a scalar or vector: mass, force, acceleration
vector, vector, vector
scalar, scalar, vector
scalar, vector, scalar
scalar, vector, vector
15
Physics is the study of...
Motion
All of these
Matter
Energy
16
Which of the following units is the SI unit for acceleration?
s/m
s/m2
m/s2
m/s
17
Which of these measurements is most accurate?
477
.000003
16.375
5.102
18
As an object falls toward Earth,
Newton’s third law does not apply.
the upward acc. of Earth is negligible b/c of its large mass
the object exerts a downward force on Earth.
the object does not exert a force on Earth.
19
Newton’s third law of motion involves the interactions of
one object and two forces.
two objects and two forces.
one object and one force.
two object and one force.
20
An object moving in uniform circular motion has a centripetal acceleration that is...
circular
zero
perpendicular to the plane of motion
directed toward the center of motion
21
According to the graph, the cat greatest positive velocity during which interval?
10.0 - 15.0 s
15.0 - 20.0 s
0.0 - 5.0 s
5.0 - 10.0 s
22
Which of the following is the tendency of an object to maintain its state of motion?
force
acceleration
velocity
inertia
23
A car makes a sharp left turn. What causes the driver to move toward the right side of the car
inertia
centrifugal force
centripetal force
centripetal acceleration
24
Acceleration due to gravity is also called
displacement
negative velocity
instantaneous acceleration
free-fall acceleration
25
Objects that are falling toward Earth in free fall move...
faster and faster
slower and slower
at a constant velocity
instantaneous acceleration
26
Which of Newton's laws states that for every action there is an equal but opposite reaction?
4th
1st
3rd
2nd
27
What is the term for the net force directed toward the center of an object’s circular path?
centripetal force
orbital force
circular force
centrifugal force
28
According to the graph, during which interval is the cat at rest?
0.0 - 5.0 s
15.0 - 20.0 s
5.0 - 10.0 s
10.0 - 15.0 s
29
In the figure, the horizontal component of the ball’s velocity at A is
equal to the horizontal component of its initial velocity.
equal # but opposite direction to horizontal velocity at D
zero
equal to the vertical component of the ball’s velocity at C.
30
A ball that is whirled on a string, breaks off. What causes the ball to fly in a straight line?
centrifugal force
inertia
centripetal force
centripetal acceleration
31
A car's velocity is positive (+) and its acceleration is negative (-). What is the car doing?
slowing down
remaining at rest
traveling at a constant speed
speeding up
32
what state has the most miles of shoreline with the ocean
California
Alaska
Hawaii
Florida
33
The graph illustrates that the acceleration of the cyclist
is constant
increases
decreases
is zero
34
The centripetal force on an object in circular motion is
in the direction opposite the tangential speed.
in the same direction as the tangential speed.
in the direction opposite the centripetal acceleration.
in the same direction as the centripetal acceleration.
35
In the figure, the magnitude of the ball’s velocity is greatest at location
D
B
C
A
