Halliday/Resnick/Walker Fundamentals of Physics 8th edition

1
Halliday/Resnick/WalkerFundamentals of Physics
8th edition

• Classroom Response System Questions

Chapter 5 Force and Motion
Reading Quiz Questions
2
5.2.1. Which of the following phrases best
describes the main subject of this chapter? a)
the unification of the forces of nature b) the
relationship between a force and acceleration c)
the life of Isaac Newton d) the laws of
physics e) the best method for solving physics
problems
3
5.2.1. Which of the following phrases best
describes the main subject of this chapter? a)
the unification of the forces of nature b) the
relationship between a force and acceleration c)
the life of Isaac Newton d) the laws of
physics e) the best method for solving physics
problems
4
5.2.2. Which one of the following statements
concerning Newtonian mechanics is false? a)
Newtonian mechanics was developed by Isaac
Newton. b) Newtonian mechanics can be
considered a special case of either Special
Relativity or Quantum Mechanics, which are more
comprehensive theories. c) Newtonian mechanics
can be used to describe the motion of
galaxies. d) Newtonian mechanics provides an
understanding of the relationship between forces
and accelerations. e) Newtonian mechanics
applies to all objects, regardless of their speed
or acceleration.
5
5.2.2. Which one of the following statements
concerning Newtonian mechanics is false? a)
Newtonian mechanics was developed by Isaac
Newton. b) Newtonian mechanics can be
considered a special case of either Special
Relativity or Quantum Mechanics, which are more
comprehensive theories. c) Newtonian mechanics
can be used to describe the motion of
galaxies. d) Newtonian mechanics provides an
understanding of the relationship between forces
and accelerations. e) Newtonian mechanics
applies to all objects, regardless of their speed
or acceleration.
6
5.3.1. Which of the following statements is true
according to Newtons first law of motion? a) A
net force is required to maintain an object at
rest. b) A net force is required to maintain an
objects constant velocity. c) A net force is
required to change an objects velocity.
7
5.3.1. Which of the following statements is true
according to Newtons first law of motion? a) A
net force is required to maintain an object at
rest. b) A net force is required to maintain an
objects constant velocity. c) A net force is
required to change an objects velocity.
8
5.3.2. Which one of the following statements
concerning Newtons first law of motion is
false? a) If no force acts on an object, the
object's velocity cannot change. b) If no net
force acts on an object, the object cannot
accelerate. c) All objects in motion have forces
acting on them. d) All of the answers above are
false.
9
5.3.2. Which one of the following statements
concerning Newtons first law of motion is
false? a) If no force acts on an object, the
object's velocity cannot change. b) If no net
force acts on an object, the object cannot
accelerate. c) All objects in motion have forces
acting on them. d) All of the answers above are
false.
10
5.4.1. What unit is defined by a 1-m/s2
acceleration of a 1-kg object? a) Lorenz b)
Newton c) Dawson d) Einstein e) Nelson
11
5.4.1. What unit is defined by a 1-m/s2
acceleration of a 1-kg object? a) Lorenz b)
Newton c) Dawson d) Einstein e) Nelson
12
5.4.2. Complete the following statement The net
force that results when two or more forces act on
an object is a) determined by adding the
magnitudes of the individual forces. The
direction of the net force is the same as the
direction of motion. b) the largest force
acting on the object. c) determined using
vector addition of the individual forces acting
on the object. d) the magnitude of the largest
force acting on the object. The direction of the
net force is the same as the direction of motion.
13
5.4.2. Complete the following statement The net
force that results when two or more forces act on
an object is a) determined by adding the
magnitudes of the individual forces. The
direction of the net force is the same as the
direction of motion. b) the largest force
acting on the object. c) determined using
vector addition of the individual forces acting
on the object. d) the magnitude of the largest
force acting on the object. The direction of the
net force is the same as the direction of motion.
14
5.4.3. Complete the following statement The term
net force most accurately describes a) the
inertia of an object. b) the quantity that
causes displacement. c) the quantity that keeps
an object moving. d) the mass of an object. e)
the quantity that changes the velocity of an
object.
15
5.4.3. Complete the following statement The term
net force most accurately describes a) the
inertia of an object. b) the quantity that
causes displacement. c) the quantity that keeps
an object moving. d) the mass of an object. e)
the quantity that changes the velocity of an
object.
16
5.4.4. Complete the following statement An
inertial reference frame is one in which a) the
frame is accelerating. b) Newtons laws of
motion are valid. c) the acceleration due to
gravity is greater than zero m/s2. d) Newtons
third law of motion is not valid. e) the
coordinate axes are rotating.
17
5.4.4. Complete the following statement An
inertial reference frame is one in which a) the
frame is accelerating. b) Newtons laws of
motion are valid. c) the acceleration due to
gravity is greater than zero m/s2. d) Newtons
third law of motion is not valid. e) the
coordinate axes are rotating.
18
5.5.1. With one exception, each of the following
units can be used to express mass. What is the
exception? a) newton b) kilogram c)
gram d) Ns2/m
19
5.5.1. With one exception, each of the following
units can be used to express mass. What is the
exception? a) newton b) kilogram c)
gram d) Ns2/m
20
5.6.1. A net force is required to give an
object with mass m an acceleration . If a net
force 6 is applied to an object with mass 2m,
what is the acceleration on this object? a) b)
2 c) 3 d) 4 e) 6
21
5.6.1. A net force is required to give an
object with mass m an acceleration . If a net
force 6 is applied to an object with mass 2m,
what is the acceleration on this object? a) b)
2 c) 3 d) 4 e) 6
22
5.6.2. Two forces act on a hockey puck. For
which orientation of the forces will the puck
acquire an acceleration with the largest
magnitude?
23
5.6.2. Two forces act on a hockey puck. For
which orientation of the forces will the puck
acquire an acceleration with the largest
magnitude?
24
5.6.3. Which one of the following tools is useful
in representing the forces acting on an object
and simplifies problem solving? a) free-body
diagram b) scalar drawing c) vector
analyzer d) Newtons ladder e) force monitor
25
5.6.3. Which one of the following tools is useful
in representing the forces acting on an object
and simplifies problem solving? a) free-body
diagram b) scalar drawing c) vector
analyzer d) Newtons ladder e) force monitor
26
5.6.4. An object moves in the eastward direction
at constant speed. A net force directed
northward acts on the object for 5.0 s. At the
end of the 5.0-second period, the net force drops
to zero newtons. Which one of the following
statements is necessarily true? a) The final
velocity of the object will be directed north of
east. b) The object will be moving eastward
when the force drops to zero newtons. c) The
direction of the object's acceleration depends on
how fast the object was initially moving. d)
The change in the velocity of the object will be
directed north of west. e) The magnitude of the
object's acceleration depends on how fast the
object was initially moving.
27
5.6.4. An object moves in the eastward direction
at constant speed. A net force directed
northward acts on the object for 5.0 s. At the
end of the 5.0-second period, the net force drops
to zero newtons. Which one of the following
statements is necessarily true? a) The final
velocity of the object will be directed north of
east. b) The object will be moving eastward
when the force drops to zero newtons. c) The
direction of the object's acceleration depends on
how fast the object was initially moving. d)
The change in the velocity of the object will be
directed north of west. e) The magnitude of the
object's acceleration depends on how fast the
object was initially moving.
28
5.6.5. Which one of the following equations is
associated with Newton's second
law? a) b) c) d) e)
29
5.6.5. Which one of the following equations is
associated with Newton's second
law? a) b) c) d) e)
30
5.6.6. While working on a project in very-low
gravity on the orbiting space station, an
engineer finds that when a force is applied
to a 2.0-kg book, it accelerates at 0.50 m/s2.
If the same force is then applied to a 6.0-kg
instruction manual, what would the manuals
acceleration be? a) 0.17 m/s2 b) 0.25
m/s2 c) 0.33 m/s2 d) 0.50 m/s2 e) 1.50 m/s2
31
5.6.6. While working on a project in very-low
gravity on the orbiting space station, an
engineer finds that when a force is applied
to a 2.0-kg book, it accelerates at 0.50 m/s2.
If the same force is then applied to a 6.0-kg
instruction manual, what would the manuals
acceleration be? a) 0.17 m/s2 b) 0.25
m/s2 c) 0.33 m/s2 d) 0.50 m/s2 e) 1.50 m/s2
32
5.6.7. Under what condition(s) will an object be
in equilibrium? a) only if it is at rest b)
only if it is moving with constant velocity c)
only if it is moving with constant
acceleration d) if it is either at rest or
moving with constant velocity e) if it is
either moving with constant velocity or with
constant acceleration
33
5.6.7. Under what condition(s) will an object be
in equilibrium? a) only if it is at rest b)
only if it is moving with constant velocity c)
only if it is moving with constant
acceleration d) if it is either at rest or
moving with constant velocity e) if it is
either moving with constant velocity or with
constant acceleration
34
5.7.1. Complete the following statement Near
the surface of the earth, the weight of an object
a) is the same as the mass of the object. b)
is the gravitational force of the earth on the
object. c) has the same value regardless of the
altitude above the surface of the earth. d) has
the same value regardless of the mass of the
object.
35
5.7.1. Complete the following statement Near
the surface of the earth, the weight of an object
a) is the same as the mass of the object. b)
is the gravitational force of the earth on the
object. c) has the same value regardless of the
altitude above the surface of the earth. d) has
the same value regardless of the mass of the
object.
36
5.7.2. During gym class, a boy climbs a vertical
rope and temporarily stops half way between the
floor below and the ceiling above. Consider the
following forces (1) gravity, (2) normal force,
(3) friction, and (4) tension. At that moment,
ignoring any effects due to the surrounding air,
which of these forces are acting on the boy? a)
1, 2, 3, and 4 b) 1, 2, and 3 only c) 1 and 2
only d) 1 and 3 only e) 1 and 4 only
37
5.7.2. During gym class, a boy climbs a vertical
rope and temporarily stops half way between the
floor below and the ceiling above. Consider the
following forces (1) gravity, (2) normal force,
(3) friction, and (4) tension. At that moment,
ignoring any effects due to the surrounding air,
which of these forces are acting on the boy? a)
1, 2, 3, and 4 b) 1, 2, and 3 only c) 1 and 2
only d) 1 and 3 only e) 1 and 4 only
38
5.7.3. What is the meaning of the word normal
in the term normal force? a) that it is in
magnitude and opposite in direction to the weight
of the object b) that it is one that is
encountered in everyday life c) that it is
directed perpendicular to a surface d) that it
is measurable e) that it has a magnitude of 1
unit
39
5.7.3. What is the meaning of the word normal
in the term normal force? a) that it is in
magnitude and opposite in direction to the weight
of the object b) that it is one that is
encountered in everyday life c) that it is
directed perpendicular to a surface d) that it
is measurable e) that it has a magnitude of 1
unit
40
5.7.4. A brick is resting on the surface of a
flat board. As one end of the board is slowly
raised, what change, if any, is there in the
normal force exerted on the brick? a) The
normal force increases. b) The normal force
decreases. c) The normal force remains
constant. d) Only the direction of the normal
force changes.
41
5.7.4. A brick is resting on the surface of a
flat board. As one end of the board is slowly
raised, what change, if any, is there in the
normal force exerted on the brick? a) The
normal force increases. b) The normal force
decreases. c) The normal force remains
constant. d) Only the direction of the normal
force changes.
42
5.7.5. A smooth wooden block is sitting at rest
on a flat wood board that makes an angle ? with
respect to the horizontal plane. To which of the
following parameters is the normal force on the
block proportional? a) cos ? b) sin ? c)
tan ?
43
5.7.5. A smooth wooden block is sitting at rest
on a flat wood board that makes an angle ? with
respect to the horizontal plane. To which of the
following parameters is the normal force on the
block proportional? a) cos ? b) sin ? c)
tan ?
44
5.8.1. Which one of the following statements is
true according to Newtons third law of
motion? a) The vector sum of all forces acting
on an object is zero. b) A force on an object
produces an equal in magnitude, but oppositely
directed force on another object. c) A force on
an object produces another equal in magnitude,
but oppositely directed force on the object. d)
A force on an object produces another differing
in magnitude, but oppositely directed force on
the object. e) A force on an object produces
another differing in magnitude, but oppositely
directed force on another object.
45
5.8.1. Which one of the following statements is
true according to Newtons third law of
motion? a) The vector sum of all forces acting
on an object is zero. b) A force on an object
produces an equal in magnitude, but oppositely
directed force on another object. c) A force on
an object produces another equal in magnitude,
but oppositely directed force on the object. d)
A force on an object produces another differing
in magnitude, but oppositely directed force on
the object. e) A force on an object produces
another differing in magnitude, but oppositely
directed force on another object.
46
5.8.2. A cell phone is sitting on a desk. Which
one of the following is the reaction force to the
cell phones weight on the desk? a) the
gravitational force on the cell phone b) the
gravitational force on the table c) the normal
force of the Earth on the table d) the normal
force of the cell phone on the table e) the
normal force of the table on the cell phone
47
5.8.2. A cell phone is sitting on a desk. Which
one of the following is the reaction force to the
cell phones weight on the desk? a) the
gravitational force on the cell phone b) the
gravitational force on the table c) the normal
force of the Earth on the table d) the normal
force of the cell phone on the table e) the
normal force of the table on the cell phone
48
5.8.3. Ryan walked to a cliff and dropped a
stone. Neglecting any effects due to the air as
it falls vertically, which one of the following
is the reaction force to the Earths gravity on
the stone? a) the normal force of the ground
below b) the normal force of Ryans hand on the
stone c) the gravitational force of the stone
on the Earth d) No reaction force appears in
this situation since the stone is not exerting
any forces on anything else.
49
5.8.3. Ryan walked to a cliff and dropped a
stone. Neglecting any effects due to the air as
it falls vertically, which one of the following
is the reaction force to the Earths gravity on
the stone? a) the normal force of the ground
below b) the normal force of Ryans hand on the
stone c) the gravitational force of the stone
on the Earth d) No reaction force appears in
this situation since the stone is not exerting
any forces on anything else.
50
5.9.1. Note the following situations In which
case will the magnitude of the normal force on
the block be equal to (Mg F sin ?)? a)
case 1 only b) case 2 only c) both cases 1
and 2 d) both cases 2 and 3 e) cases 1, 2,
and 3
51
5.9.1. Note the following situations In which
case will the magnitude of the normal force on
the block be equal to (Mg F sin ?)? a)
case 1 only b) case 2 only c) both cases 1
and 2 d) both cases 2 and 3 e) cases 1, 2,
and 3
52
5.9.2. A rock is suspended from a string and
moves downward at constant speed. Which
statement is true concerning the tension in the
string if air resistance is ignored? a) The
tension is less than the weight of the rock. b)
The tension is equal to the weight of the
rock. c) The tension is greater than the weight
of the rock. d) The tension points
downward. e) The tension is zero newtons.
53
5.9.2. A rock is suspended from a string and
moves downward at constant speed. Which
statement is true concerning the tension in the
string if air resistance is ignored? a) The
tension is less than the weight of the rock. b)
The tension is equal to the weight of the
rock. c) The tension is greater than the weight
of the rock. d) The tension points
downward. e) The tension is zero newtons.
54
5.9.3. A water skier is pulled by a boat
traveling with a constant velocity. Which one of
the following statements is false concerning this
situation? a) The water skier is in
equilibrium. b) The net acceleration of the
skier is zero m/s2. c) The net force on the
skier is zero newtons. d) There is a net
horizontal force on the skier in the direction
the boats velocity. e) The net vertical force
on the skier is zero newtons.
55
5.9.3. A water skier is pulled by a boat
traveling with a constant velocity. Which one of
the following statements is false concerning this
situation? a) The water skier is in
equilibrium. b) The net acceleration of the
skier is zero m/s2. c) The net force on the
skier is zero newtons. d) There is a net
horizontal force on the skier in the direction
the boats velocity. e) The net vertical force
on the skier is zero newtons.