Multiple Choice Identify the choice that best completes the
statement or answers the question.


1

A force of 1 N accelerates a mass of 1 kg at the rate of 1 m/s^{2}. The
acceleration of a mass of 2 kg acted upon by a force of 2 N is
a.  half as much.  b.  the same.  c.  twice as
much.  d.  none of the above 


2

Suppose the force of friction on a sliding object is 35 N. The force needed to
maintain a constant velocity is
a.  35 N  b.  more than 35 N.  c.  less than 35
N. 


3

If the force acting on a cart doubles, what happens
to the cart's acceleration?
a.  It quarters.  b.  It stays the same.  c.  It
quadruples.  d.  It
halves.  e.  It doubles. 


4

A push on a 3kilogram brick accelerates the brick. Neglecting friction, to
equally accelerate a 9kilogram brick, one would have to push
a.  with 3 times as much force.  b.  with the amount of
force.  c.  with 30 times as much force.  d.  with just as much force.  e.  none of the
above 


5

A 12N falling object encounters 5 N of air resistance. The magnitude of the net
force on the object is
a.  7 N.  b.  0 N.  c.  12
N.  d.  5 N.  e.  none of the
above 


6

How much force is needed to accelerate a 2.0kg physics book to an acceleration
of 4.0 m/s^{2}?
a.  24.0 N  b.  8.0 N  c.  0.5
N  d.  0 N  e.  2.0 N 


7

What is the net force in this example?
a.  1050 Newtons up  c.  150 Newtons down  b.  150 Newtons
up  d.  250 Newtons down 


8

A 18N falling object encounters 3 N of air
resistance. The magnitude of the net force on the object is
a.  15 N.  b.  18 N.  c.  3
N.  d.  0 N.  e.  none of the above 


9

How does acceleration of an object change in relation to its mass? It is
a.  inversely proportional.  b.  directly proportional.  c.  Acceleration
doesn't depend on mass at all. 


10

When an object reaches terminal velocity its acceleration is
a.  9.8 m/s^{2}.  b.  4.9 m/s^{2}.  c.  0
m/s^{2}. 


11

A tow truck exerts a force of 1500 N on a car, accelerating it at 2 m/s/s. What
is the mass of the car?
a.  250 kg  b.  750 kg  c.  375
kg  d.  1500 kg  e.  none of the
above 


12

The picture below illustrates which of
Newton's three laws?
a.  Newton’s First Law  c.  Newton’s Third Law  b.  Newton’s
Second Law  d.  None of the above 


13

A heavy person and a light person parachute together and wear the same size
parachutes. Assuming they open their parachutes at the same time, which person reaches the ground
first?
a.  Neither  they both reach the ground together.  b.  the light
person  c.  the heavy person 


14

Friction is a force that always acts
a.  in the same direction as an object's
motion.  b.  opposite to an object's
motion.  c.  perpendicular to an object's
motion. 


15

A tennis ball and a solid steel ball with the same diameter are dropped at the
same time. In the absence of air resistance, which ball has the greater acceleration?
a.  They both have the same acceleration.  b.  The tennis ball  c.  The steel
ball 


16

A sportscar has a mass of 3000 kg and accelerates
at 2 meters per second squared. What is the magnitude of the force acting on the
sportscar?
a.  1500 N.  b.  4500 N.  c.  3000
N.  d.  6000 N.  e.  none of the above 


17

A girl pulls on a 9kg wagon with a constant force of 27 N. What is the
wagon's acceleration?
a.  3 m/s^{2}  b.  243 m/s^{2}  c.  0.3 m/s^{2}
 d.  27 m/s^{2}  e.  9
m/s^{2} 


18

A toybox is dragged without acceleration in a straightline path across a level
surface by a force of 14 N. What is the frictional force between the toybox and the surface?
a.  14 N  b.  Need more information to
say.  c.  More than 14 N  d.  Less than 14 N 


19

A girl pulls on a 5kg wagon with a constant force
of 20 N. What is the wagon's acceleration?
a.  4 m/s^{2}  b.  20 m/s^{2}  c.  100
m/s^{2}  d.  5
m/s^{2}  e.  0.3
m/s^{2} 


20

A station wagon has a mass of 1500 kg and accelerates at 5 meters per second
squared. What is the magnitude of the force acting on the station wagon?
a.  300 N.  b.  2250 N.  c.  1500
N.  d.  7500 N.  e.  none of the
above 


21

Pressure is defined as
a.  time per area.  b.  velocity per time.  c.  force per
time.  d.  distance per time.  e.  force per area. 


22

Accelerations are produced by
a.  velocities.  b.  accelerations.  c.  forces.  d.  masses.  e.  none of the
above 


23

A box of supplies weighs 50 N. When held at rest in your hands, the net force on
the box of supplies is
a.  5.1 N.  b.  490 N.  c.  0
N.  d.  50 N.  e.  none of the
above 


24

You pull horizontally on a 50kg crate with a force of 300 N and the friction
force on the crate is 50 N. The acceleration of the crate is
a.  5 m/s^{2}.  b.  7 m/s^{2}.  c.  6
m/s^{2}.  d.  2.5 m/s^{2}. 


25

The figure shows a block that is being pulled along
the floor. According to the figure, what is the acceleration of the block?
a.  2 m/s^{2}  c.  3
m/s^{2}  b.  4
m/s^{2}  d.  5 m/s^{2} 


26

How much force is needed to accelerate a 3.0kg
physics book to an acceleration of 6.0 m/s^{2}?
a.  0 N  b.  54.0 N  c.  18.0
N  d.  0.5 N  e.  2.0 N 


27

If the force acting on a cart doubles, what happens to the cart's
acceleration?
a.  It quadruples.  b.  It stays the same.  c.  It
halves.  d.  It doubles.  e.  It quarters. 


28

A tow truck exerts a force of 3000 N on a car,
accelerating it at 1.5 m/s/s. What is the mass of the car?
a.  667 kg  b.  2000 kg  c.  3000
kg  d.  1000 kg  e.  none of the above 


29

A 12N falling object encounters 12 N of air resistance. The magnitude of the
net force on the object is
a.  0 N.  b.  24 N.  c.  12
N.  d.  none of the above 


30

A 50 kilogram
skateboarder experiences a 20N force as shown. What is the expected acceleration of the
skateboarder?
a.  0.4 m/s^{2}  c.  0.2 m/s^{2}  b.  5.0
m/s^{2}  d.  1500
m/s^{2} 
