Transcript Final Exam Review

Final Exam
Review
Physical Science
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 there is an
equal and
opposite:
a) energy flow
b) acceleration
c) reaction
d) Newton's 3rd law
15)
What is
the correct
formula for
momentum?
a) mass/volume
b) mass x volume
c) Mass
mass x velocity
d) velocity/mass
16)
What is the
power if the
voltage is 110 V
and the current
4 Amps?
a) 27.5 W
b) 27.5 Ohms
c) 440 Ohms
d) 440 W
W
17)
V = IR
a) Ohm’s
Ohm’s Law
Law
b) Coulomb’s Law
c) Voltage Law
d) Electric Power
18)
The
ability to do
work is:
a) energy
energy
b) potential energy
c) acceleration
d) motion
19)
What law is this?
Energy cannot be created
or destroyed; it may be
transformed from one for
into another, but the total
amount of energy never
changes.,
a) conservation of mass
b) conservation of matter
c) conservation of
momentum
d) Conservation of energy
20)
If an
object has
energy it:
a) Has
has the
the ability
ability to
to do
do work
work
b) must have kinetic energy
c) is doing work
d) Has force
21)
What is the
potential energy of
1 kg. block on a
ledge 10 meters
high
a) 980 kg*m
b) 98 kg*m
c) .98 kg*m
d) 9.8 kg*m
22)
What is the
formula for
work?
a) force x circumference
b) force/ area
c) Force x distance
d) Distance and weight
23)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
24)What
law is
this: F = kq1q2
2
d ?
a) Ohm’s Law
b) Law of Gravity
c) Coulomb’s Law
d) Law of Conservation of
energy
25)Which
circuit
would allow other
lights to stay lit if
one went out?
a) short circuit
b)Parallel
Parallelcircuit
circuit
c) Series circuit
d) Open circuit
26)
What is
density?
a) how heavy an object is
b) force/area
c) Mass/volume
mass/volume
d) weight/volume
27)
Which is not a
way to generate
static charge?
a) induction
b) touching
c) conduction
d) friction
28)
What is the
momentum of a
1200kg. car
traveling at 8 m/s?
a) 150 kg*m/s
b) 9600 kg*m/s
c) 1208 kg*m/s
d) Cannot be determined with
information given
29)
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
30)
How much power
is used if a student
weighing 520 N.
climbs the stairs
(vertical height) of
3.6 meters in 5 s.
a) 104.72 W
b) 374.4 W
c) 28.9 W
d) 9360 W
31)
In order to
increase power,the
student in the
previous problem
could:
a) Lose weight
b) Gain weight yet keep the same
speed
c) Climb the stairs slower
d) Climb the stairs faster
e) Both b and d
32)
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
33)
Distilled water
has a density of
_________ g/cm3
a) 0
b) 9.8
c) 2
d) 1
34)
Heat is best
described as:
a) The transfer of thermal
energy
b) How hot something may be
c) Thermal energy
d) Temperature
35)
Newton’s second
law states
a) F= ma
b) P1V1 = P2V2
c) D = m/v
d) P = force/area
36) In the
electromagnetic
spectrum, the waves
with the highest
energy are:
a) microwaves
b) X rays
c) Gamma rays
d) Radio waves
37) A measure of
the average
kinetic energy of
the molecules is:
a)temperature
temperature
b) heat
c) Thermal energy
d) friction
38) As water
freezes, the density
decreases because
the________
increases
a) pressure
b) volume
c) ice
d) Thermal energy
39) How much
kinetic energy does
a 24 kg. cart
traveling 3m/s
have?
a) 108 J
b) 72 J
c) 8 J
d) None of these answers
40) 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
41) The
temperature of
boiling water in
Celsius is ___
degrees.
a) 212
b) 100
c) 32
d) 0
42) After 4 seconds
of free fall, an
object should be
traveling at ___ m/s
a) 10
b) 15
c) 25
d) 40
43) The weight of a
2 kg. Box of
chocolates would
be____ N.
a) 2
b) 20
c) .2
d) 12
44) 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
45) A force vector
shows both
________ and
direction.
a) pressure
b) Magnitude (amount)
c) energy
d) power
46) 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
47) 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
48) A 20kg. Cart moving
5m/s collides with a
stationary cart with a
mass of 5kg. They stick
together after the
crash. How fast are
they going?
a)2
b) 4
c) 5
d) 1
49) How much work
is done when a 12
kg object is lifted 2
meters?
a) 24 N*m
b) 120 N*m
c) 240 N*m
d) Cannot be determined
50) The method of
heat transferring
which fluids move
thermal energy in
currents is:
a) conduction
b) radiation
c) Lava flows
d) Convection