Download Chapter 4 Exam Review

Chapter 4 Exam Review
• The acceleration of an object
in free fall on the earth is
_________.
2
A. 9.4 m/s
3
B. 9.4 m/s
C. 9.8 m/s2
3
C. 9.8 m/s
• Newton's first law of motion states that an object
at rest tends to remain at rest and an object in
motion tends to stay in motion with the same
speed and in the same direction unless it is acted
upon by an unbalanced force.
________________ is the resistance an object has
to a change in its state of motion.
A. Acceleration
B. Inertia
C. Friction
D. Velocity
What two types of friction occur between two solid
surfaces?
A. The two types of friction that occur between
two solid surfaces are sliding and pushing
friction.
B. Gravity and air pressure are the two types of
friction that occur between two solid surfaces.
C. The two types of friction that occur between
two solid surfaces are sliding and rolling
friction.
D. Rolling and air pressure are the two types of
friction that occur between two solid surfaces.
Assuming they are all traveling at
the same speed, which of the
following objects has the most
inertia?
A.a soccer ball
B.a car
C.a battleship
D.a bicycle
Complete Newton's First Law of Motion.
An object at rest tends to stay at rest
and an object in motion tends to stay in
motion with the same speed and in the
same direction unless acted upon by
a(n) _________ force.
A. opposite
B. circular
C. balanced
D. unbalanced
+-- = -----
• This diagram uses arrows and their size to
represent the strength of a force. Apply what you
know about net force to answer the following
questions.
Diagram A represents two forces __________
together, resulting in a(n)_________ force.
–
–
–
–
adding, balanced
adding, unbalanced
canceling, balanced
canceling, unbalanced
Which is NOT an example of an
unbalanced force?
A.a ball hitting a bat
B.running a mile
C.shooting a jump shot
D.a book sitting on a table
Which of the following statements is Newton's First
Law of Motion?
A. For every action, there is an equal and opposite
reaction.
B. An object at rest tends to remain at rest while an object
in motion tends to remain in motion at the same speed
and in the same direction.
C. An object in motion will stop easily and quickly if an
opposite force is applied to it by another moving object
of the same velocity and color.
D. The force acting upon an object can be described by the
equation F = ma, where F is the force, m is the mass, and
a is the acceleration.
According to Newton's First Law of Motion, an
object in motion will continue moving at a
constant speed and in a straight line unless
acted on by an unbalanced force. On earth,
objects in motion need constant force
applied to remain in motion because of
_____________ working against them.
a. inertia
b. friction
c. stasis
d. momentum
• The upward force on an object
falling through the air is ____.
• a. air resistance
• b. inertia
• c. momentum
• d. terminal velocity
• The relationship among mass, force,
and acceleration is explained by
____.
• a. conservation of momentum
• b. Newton's first law of motion
• c. Newton's second law of motion
• d. Newton's third law of motion
• The greater an object's
mass, the
__________________ the
gravitational force on it.
• A feather will fall through the air
more slowly than a brick because of
____.
• a. air resistance
• b. gravity
• c. inertia
• d. momentum
• In the absence of air, a penny and a
feather that are dropped from the
same height at the same time will
____.
• a. fall at different rates
• b. fall at the same rate
• c. float
• d. not have momentum
• The acceleration due to gravity
is ____.
• a. 98 m/s2 c. 9.8 m/s
2
• b. 9.8 m/s d. 0.98 m/s
• According to Newton's
second law of motion,
____.
• a. F = ma c. F = pa
• b.F = mv d. F = pv
• When an object moves in a circular
path, it accelerates toward the
center of the circle as a result
of ____.
• a. centripetal force
• b. frictional force
• c. gravitational force
• d. momentum
• The path of a projectile is
____.
• a. curved
• b.always horizontal
• c. always vertical
• d.straight
• The size of the gravitational force
between two objects depends on
their ____.
• a. frictional forces
• b. inertia
• c. masses and the distance
between them
• d. speed and direction
• As you get farther from the
center of Earth, your weight will
____.
• a. decrease
• b. increase
• c. remain the same
• d. can't tell from information
given
A ball attached to a string is being swung in
a clockwise circular path as shown in Figure
3-1. Assume the string breaks at point A. In
which direction will the ball be traveling an
instant later?
a. direction a
c. direction c
b. direction b
d. direction d
• A ball attached to a string is being
swung in a clockwise circular path
as shown in Figure 3-1. In which
direction will the acceleration on
the ball be when the ball passes
point A?
• a. direction a
c. direction c
• b. direction b
d. direction d
• An object that is in free fall
seems to be ____.
• a. not moving
• b. slowed by air resistance
• c. speeded up by air resistance
• d. weightless
• When two balls collide, the
momentum of the balls after the
collision is explained by ____.
• a. the law of conservation of
momentum
• b. Newton's first law of motion
• c. Newton's second law of motion
• d. Newton's third law of motion
• The statement "to every action
there is an equal and opposite
reaction" is ____.
• a. the law of conservation of
momentum
• b. Newton's first law of motion
• c. Newton's second law of motion
• d. Newton's third law of motion
• In the equation p = m ´ v, the p
represents ____.
• a. friction
c. momentum
• b. inertia
d. position