
A nonzero net force acting on a body will have which effect?


The
velocity of the body will remain constant.


The
velocity of the body remains constant but the direction in which the body
moves will change.


The
velocity of the body will change.


None
of the above.



Body A has a mass that is twice as great as that of body B.
If a force acting on body A is half the value of a force acting on
body B, which statement is true?


The
acceleration of A will be twice that of B.


The
acceleration of A will be half that of B.


The
acceleration of A will be equal to that of B.


The
acceleration of A will be one fourth that of B.



What is the magnitude of the net force required to impart an acceleration
of magnitude 10 m/s^{2} to a body with a mass of 2.0 kg?


0.2
N


5
N


12
N


20
N



Newton's second law can be stated as which of the following?


For
every action there is an equal and opposite reaction.


Force
and the acceleration it produces are directly proportional.


A
body at rest tends to remain at rest unless acted upon by a force.


None
of the above.



If two forces act concurrently on a body, the resultant force will be
greatest when the angle between them is:


0^{o}


45^{o}


90^{o}


180^{o}



A force acting on a box can have one of the four orientations, A, B,
C or D indicated below.
In which orientation will the force have the smallest vertical component?


A


B


C


D



As the magnitude of the vector sum of the forces acting on a body
increases, the magnitude of the acceleration of the body must


increase.


remain
the same.


decrease.


either
increase or decrease depending on the direction of the resultant.



For a body experiencing zero acceleration, which statement is most
true?


The
body must be at rest.


The
body may be at rest.


The
body must slow down.


The
body may speed up.



The magnitude of the acceleration of a body is 2.5 m/s^{2} when it
is acted on by a net force of the magnitude of which is 5.0 N. The mass of
the body is:


0.5
kg


2.0
kg


12.5
kg


25
kg



Which graph best represents the relation between the force of gravity and
the mass of a freefalling body?











The magnitude of the acceleration of an object of
mass m_{o} subjected to a single constant force of magnitude F_{o}
is a_{o}.
If the magnitude of the force was decreased slightly, the magnitude of the
acceleration of the object would be ____ a_{o}.


more
than


equal
to


less
than


incomparable,
without additional information, with



The magnitude of the acceleration of an object of
mass m_{o} subjected to a single constant force of magnitude F_{o}
is a_{o}.
If this same force was exerted on a second object with mass m_{2}
> m_{o}, the magnitude of the acceleration of this second object
would be ____ a_{o}.


less
than


more
than


equal
to


incomparable,
without additional information, with



The magnitude of the acceleration of an object of
mass m_{o} subjected to a single constant force of magnitude F_{o}
is a_{o}.
If the magnitude of the force was increased slightly, the mass of the
object would ____.


remain
constant


increase


decrease


be
impossible to predict



An object of mass m_{o} is simultaneously
subjected to two forces: F_{1} = 6 N i and F_{2}
= 3 N i. The magnitude of the acceleration of the object is a_{o}.
If the magnitude of F_{1} was increased slightly, the
magnitude of the acceleration of the object would ___.


increase


decrease


remain
constant


be
unpredictable



An object of mass m_{o} is simultaneously
subjected to two forces: F_{1} = 6 N i and F_{2}
= 3 N i. The magnitude of the acceleration of the object is a_{o}.
In order to double the magnitude of the acceleration of the object, F_{1}
would have to be ____.


increased
by 2N


increased
by 3N


increased
by 4N


increased
by 5N


decreased
by 2N


decreased
by 3N



An object of mass m_{o} is simultaneously
subjected to two forces: F_{1} = 6 N i and F_{2}
= 3 N i. The magnitude of the acceleration of the object is a_{o}.
If the magnitude of both forces was doubled, the magnitude of the acceleration
of the object would be a_{o} x ____.


1


2


3


4


6


8



If the mass of a moving body is doubled, the inertia of the body will be


half
as great as its original value.


twice
as great as its original value.


four
times as great as its original value.


unchanged
from its original value.



After a rocket is launched, its engines are shut off. The rocket continues
to move in a straight line at constant speed. This is an example of


acceleration.


inertia.


gravitation.


actionreaction.



What is the magnitude of the weight of a 2.0 kg body on or near the
surface of the earth?


4.9
N


16
lbs


19.6
N


64
kg m s^{2}



On a large asteroid, the weight of, or the force of gravity on, a 10 kg
body is 20 N. What is the magnitude of the acceleration due to gravity on the
asteroid?


0.5
m/s^{2}


2.0
m/s^{2}


9.8
m/s^{2}


98
m/s^{2}



A box rests on a level table. Which of the following is an actionreaction
pair of forces?


The
weight of the box and the upward force on the earth.


The
weight of the table and the upward force of the earth on any of the legs of
the table.


Both
A and B.


None
of the above.



A 1000 pound safe falls off the back of a flatbed
truck as the truck travels with constant speed down the interstate. As the
safe falls toward the ground, ...
...the magnitude of the gravitational force exerted on the safe by the
earth is ____ 1000 pounds.


more
than


equal
to


less
than


incomparable,
without additional information, with



A 1000 pound safe falls off the back of a flatbed
truck as the truck travels with constant speed down the interstate. As the
safe falls toward the ground, ...
...the magnitude of the gravitational force exerted on the earth by the
safe is ____ 1000 pounds.


more
than


equal
to


less
than


incomparable,
without additional information, with



A 1000 pound safe falls off the back of a flatbed
truck as the truck travels with constant speed down the interstate. As the
safe falls toward the ground, ...
...the magnitude of the acceleration of the earth toward the safe is ____.


9.8
m/s^{2}


more
than 9.8 m/s^{2}


less
than 9.8 m/s^{2} but greater than 0
