Transcript Review for Intro. Physics Part A Final Exam

Force and
Motion
Review
Introductory Physics
Part A
1) What 2 factors
are involved in
calculating speed?
a)Distance and speed
Distance and time
b)Distance
c)Velocity and time
d)Velocity and speed
2) What is the
equation for
acceleration?
a) time interval/ change of velocity
b) change of velocity/ time interval
c) distance/time
d)Time/distance
3) A bike goes from
rest to 30 km/h in 20
seconds what is the
acceleration?
a) 1.25
b) 50
c) 10
1.5
d) 1.5
4) In 3 seconds a
car increases its
speed from 40km/h
to 45km/h while a
bicycle goes from
rest to 5km/h
which has a
a) car
greater
b) bike
acceleration?
c) same
same
d) I don’t
know
5) The rate at which
velocity changes with
time where the change
in velocity may be in
magnitude or direction
or both. This is the
definition of:
a) speed
b) velocity
c) free fall
d) acceleration
6) The formula
for distance
traveled in free
fall is d =
a) 1/2gt(2)
b) 1/2gt22
2
c) 1/2g t
d) 1/2tg(2)
7) The amount
of matter in
an object is
a) weight
b) mass
c) volume
d) area
8)The amount
of space taken
up by an object
is
a) weight
b) mass
c) volume
d) surface area
9) “Every material object
continues in its state of
rest, or in uniform motion
in a straight line, unless
acted upon by an
unbalanced force.” What is
this law?
a) Newton’s first law
b) Newton’s 2nd law
c) Newton’s 3rd law
d) Momentum law
10)
The
acceleration of
an object is
directly
proportional to
the
a) mass
b) force
c) speed
d) velocity
11)
What is
force?
a) potential energy
b) A
a push or a pull
c) work
d) kinetic energy
12)
Acceleration
is inversely
proportional to:
a) force
b) mass
c) work
d) pressure
13)
When the
acceleration of an
object is zero, we
say that the object
doing what?
a)Free falling
b) changing direction
c) speeding up
d)Constant
constant motion or staying still
14)
For every
action force there
is an equal and
opposite:
a) energy flow
b) acceleration
c) reaction force
d) Newton's 3rd law
15)
Which of the
following are most
important in
determining the amount
of gravity between two
objects?
a) time and weight
b) Mass and distance
c) Force and mass
d) distance and weight
16)
What law is
this: F = Gm1m2
2
d
a) Ohm’s Law
b) Coulomb’s Law
c) Law of Universal Gravitation
Graviation
d) Newton’s 1st Law of Motion
17)
What is
density?
a) how heavy an object is
b) force/area
c) Mass/volume
mass/volume
d) weight/volume
18)
Calculate the
speed of a car that
went 144 miles in 1
hour 30 minutes
a) 96 mph
b) 216 mph
c) 72 mph
d) 115 mph
19)
What is the force
required to
accelerate a 32 kg.
box at a rate of 3
m/s2?
a) 35 N
b) 96 N
c) 10.67 N
d) There are several forces
20)
Newton’s second
law states
a) F= ma
b) P1V1 = P2V2
c) D = m/v
d) P = force/area
21) An object that
is in free fall but
not accelerating
any more must be
a) on the ground
b) experiencing
c) At terminal velocity
d) deceased
22) After 4 seconds
of free fall, an
object should be
traveling at ___ m/s
a) 10
b) 15
c) 25
d) 40
23) The weight of a
2 kg. Box of
chocolates would
be____ N.
a) 2
b) 20
c) .2
d) 12
24) What is the net
force if an object is
pushed west with a
force of 5 N and east
with a force of 25 N.
a) 20 N east
b) 20 N west
c) 30 N east
d) 30 N west
25) A force vector
shows both
________ and
direction.
a) pressure
b) Magnitude (amount)
c) energy
d) power
26) A car and a truck
collide head-on. The car
has a mass half that of the
truck. The impact force of
the truck on the car is 500
N. what is the impact force
of the car on the truck
a) 250 N
b) 500 N
c) 750 N
d) Not sure
27) An object
following a
straight-line path
at constant speed
a) has zero acceleration
b) Must be moving in a vacuum or
in the absence of air friction.
c) Has no forces acting on it
d) Has a net force acting in the
direction of motion
28) 74 cm = ____ m
a) 0.74
0.74
b) 7.4
c) 7400
d) None of these
28) 478 mL = ____ L
a) 0.478
0.478
b) 4.78
c) 4780
d) None of these
29) Which of the following graphs shows the
relationship between mass and
acceleration?
Newton's Second Law
14
12
a
Acceleration
10
8
a
b
6
4
b
2
0
1
2
3
Mass
a) a
b)
c) None of these
4
5