Kepler’s second law explains that orbiting bodies move in elliptical paths and their speed changes as they travel

equal time periods sweep out equal areas measured from the center body.

An object is dropped from an endless chasm. Does the object continuously accelerate as it is falling down?

No, it would plateau at some point

Which of the following is the tendency of an object to maintain its state of motion?

hammer exerts a force on the nail; the nail exerts a force on the hammer

Which of the following has the greatest momentum?

A 275 kg tortoise moving at a speed of 0.55 m/s.

The higher the coefficient of friction...

the harder it is to slide objects across to each other

When comparing the momentum of two moving objects which of the following statements is correct?

The less massive object will have less momentum if the velocity the same.

Which of the following represents a negative displacement?

A squirrel jumps from a tree limb to the ground.

To determine the number of significant figures to report you always include

all of the certain values plus one uncertain value

The International System of Measures

is used for scientific communication

What relationship is indicated by a smooth upward curving line on a graph?

direct relationship between y and x

Why does an astronaut weigh less on the moon than on Earth?

The moon has less mass than Earth, providing less gravitational force.

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Physics Exam One

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some answers may be wrong as I got other questions previously wrong and they don't show the correct answer. Confident of about 90% however

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Questions 132

Answers

1
A container holds 3.5 L. How many centiliters does the container hold?
35000000
0.3500
3.50
350 cL
2
Kepler’s second law explains that orbiting bodies move in elliptical paths and their speed changes as they travel
equal time periods sweep out equal areas measured from the center body.
a planet's orbital period is proportional to the size of its orbit.
planets move in elliptical orbits with the Sun as a focus
3
Convert 9,840 dg to kg
8.9x10-2
9.84 x 10^1 kg
9.84x10-1
9.8x102
4
Solve and express your answer in scientific notation. (4 x 10−710−7)(3.25 x 109109)
1.3 x 10^3
13000
0.13333
130
5
A child with a mass of 23.0 kg rides a bike mass of 5.5 kg at a velocity of 4.50 m/s to the south Stop 1.38 Total force?
92.9 N
93 N
92.9 S
6
bicycle radius of 4.0 m. The speed is 2.0 m/s. The combined mass is 43kg. What force provides central force?
acceleraiton
mole
friction
time
7
If you are given a velocity versus time graph what does a linear upward sloping line represent?
constant positive acceleration
quadric
linear positive accelration
constant negative acceleration
8
An object is dropped from an endless chasm. Does the object continuously accelerate as it is falling down?
yes
No, it would plateau at some point
9
Which of the following is a type of friction?
all of the above
static
fluid
sliding
10
students are conducting an experiment: How does phone use before bedtime affect sleep? What is the independent variable?
Amount of phone use before bed
how charger the battery is
how much sleep got
what time you go to bed
11
position v. time graph. Slope of line tangent to point on curve of graph described what quantity
displacement
average velocity
instanteanous velocity
acceleration
12
The slope of a velocity versus time graph for an object in free-fall acceleration represents which quantity?
acceleration
force
acceleration in meters per second
13
When calculating the gravitational force between two bodies you should measure
from the furthest points
from the center of each body
it doesn't matter
14
Which of the following features of a pendulum changes when moved from a lower altitude to a higher altitude?
amplitude
nothing changes
period
15
Units that are combinations of fundamental units are __________.
fundamental units
derived units
16
What was the cyclist's displacement during this 10.0 second time interval?
60 m
x=vit+1/2at2
40 m
75 m
17
An object is moving in constant circular motion. Its centripetal acceleration is...
is directed towards the center
is directed towards the parallax
is directed away from the center
18
What are the units for momentum?
Watts
Newtons
kg *m/s
kg/m/s/
19
Which of the following is the tendency of an object to maintain its state of motion?
nail exerts force on table
hammer exerts a force on the nail; the nail exerts a force on the hammer
nail exerts force on hammer
20
Which of the following has the greatest momentum?
a 4 kg dog at rest
A 275 kg tortoise moving at a speed of 0.55 m/s.
a 1.3 kg cat running at 50 m/s
21
The magnitude of the gravitational force acting on an object is
speed
wight
mass
time
22
0.54 hg = 540 dg
False
True
23
The higher the coefficient of friction...
there is no change
the harder it is to slide objects across to each other
the easier it is to slide to objects across each other.
24
When comparing the momentum of two moving objects which of the following statements is correct?
the less momentum object will have more mass if velocity same
the less massive object will have more momentum if the velocity same
The less massive object will have less momentum if the velocity the same.
25
How many Significant figures are there for the following number: 0.0780 km
2
7
5
3
26
John added 35.0 mL of a liquid. Are the previous units derived or fundamental?
derived
fundamental
not this one
maybe this one
27
In any number, the digits that are valid are _____________.
digits
Significant digits
insignificant digits
numerically accurate
28
The following data was collected for an object. The actual mass is 10.02 g. Describe the data below:
both accurate and precise
Precise but not accurate
accurate but not precise
29
Simple harmonic. Which is the number of cycles of per unit of time
amplitude
period
Frequency
revolution
30
Mr. Nelson drove 8 mi/hr
Derived
fundamental
31
Convert 469.1 mg to grams
4,691 g
0.4691 g
4.691 g
46.91 g
32
When constructing a graph to determine the relationship between two sets of data, we plot the ___ variable on the x-axis
codependent
independent
smaller
bigger
33
During which interval did the cat have a southern velocity?
5.0 - 10.0
2.0 - 0.0
10.0 - 15.0
0.0 - 0.0
34
Which of the following represents a negative displacement?
a squirrel jumping from one limb to another
A squirrel jumps from a tree limb to the ground.
a squirrel jumping from the ground to a tree limb
35
Which impact the gravitational pull between two objects according to Newton’s Law of Universal Gravitation?
time and speed
mass and distance
36
To determine the number of significant figures to report you always include
Always round as much as possible
every number on the calculator
Only the amount that you know
all of the certain values plus one uncertain value
37
A billiard ball collides with a stationary billiard ball in an elastic collision. What happens to first ball
goes in opposite direction
it comes to rest
gains speed
38
The motion of a toy car is described by the equation d = ½ at^2. What variable must have a quantity of zero?
final velocity
time
initial velocity
distance
39
The apple fell for 0.87 s
derived
Fundamental
40
The International System of Measures
is not accurate
is only used in America
is used for scientific communication
is used for basic understanding
41
During which interval did the cat have the fastest speed?
0.0 - 5.0
5.0 - 10.0
10.0 - 15.0
42
The bottle of water had a mass of 1.2 kg
fundamental
0.12cm
so?
derived
43
For an object moving at a constant speed in a merry-go-round which of the following is a true statement?
the object is slowing down
the object is accelerating
the object is remaining the same
44
What relationship is indicated by a smooth upward curving line on a graph?
x/y
y/x
direct relationship between y and x
a direct relationship between x and y
45
.30kg baseball pitched velocity of 60 m/s. Batted back with velocity 90. Stopped in 0.050 s. Force felt by pitcher?
27
104
900
F=p/t
46
Why does an astronaut weigh less on the moon than on Earth?
because of mass
the moon is closer to the sun
The moon has less mass than Earth, providing less gravitational force.
47
A container holds 3.5 L. How many centiliters does the container hold?
350 cL
35 cL
0.000350
3.5 cL
48
What was the cat’s average velocity during the first 15 seconds?
-0.067m/s
0.067m/s
0.2 m/s
(final displacement - initial displacement) / (final time - initial time)
49
It took 2,260 kJ to boil the water
fundamental
caveman would kill you for this
you got a crappy stove
Derived
50
Acceleration is defined as
the rate of change of force
the rate of change of velocity
the change of velocity
51
When a car’s velocity is negative and its acceleration is negative, what is happening to the car’s motion?
the car blows up
the car remains the same
the car slow down
the car speeds up
52
bicycle radius of 4.0 m. The speed is 2.0 m/s. The combined mass is 43kg. What is central force?
54
43 N
-43 N
34
53
On Earth, gravitational pull is measured to be 10.81 m/s2 on average.
false
true
54
Mr. Nelson drove 8 mi/hr
fundamental
grandma
derived
illegal speed
55
A baseball catcher throws a ball straight upward and catches it in the same spot as it returns to his mitt. When zero?
at the top of its path
at the beginning of its path
Midway through path
56
Physics is the study of
gravity
numbers
the earth
Matter and Energy
57
When a car’s velocity is positive and its acceleration is negative, what is happening to the car’s motion?
the car speeds up
the car slows down
the car remains the same
58
Which of the following is the tendency of an object to maintain its state of motion?
coefficient
obervation
interia
59
.30kg baseball pitched velocity of 60 m/s. Batted back with velocity 90. What is momentum when pitched back to pitcher
9
27
45
60
For a system in simple harmonic motion, which of the following is the maximum displacement from equilibrium?
velocity
acceleration
Amplitude
61
A conversion factor is a fraction that is equivalent to
0
1
the smallest number
the previous number
62
Which of the following is a derived unit?
meter
mole
velocity, density, or force
kilograms
63
Velocity is
scalar quantity
vector quantity
64
For an object dropped from rest on Earth, which are included in your GIVENS?
a = -9.81 m/s2, vi = 0 m/s
a = 9.81 m/s22, vi = 1 m/s
65
What are the three fundamental measures used in physics from which all other measures are derived?
length, mass, and time
acceleration
volume
velocity
66
A ball is moving at 4.0 m/s and has momentum 48 kgm/s. What is the ball's mass?
24
12
-12
67
Was the cyclist ever moving at a constant velocity during this time interval?
yes
no
68
Which is not scalar
speed
time
distance
poition
69
8 x10¹²/4 x10¹⁴
8x102
2 x 108
2x810
10x28
70
Which factors affect a pendulum’s period?
how long it swings
amount of weight
length of string and gravitational field strength.
71
Two billiard balls collide and bounce off each other in different directions. This is an example of a(n)
inelastic
elastic
72
Which of the following statements applies to the motion of a ball rising and then falling in free-fall?
I, II, and III
I and III
II and III
Just I
73
The apple fell for 0.87 s
almost an hour
derived
Fundamental
87 minutes
74
For an object moving in circular motion at a constant speed, acceleration is also constant.
false
true
75
Was the cyclist ever at rest during the time?
no
yes
76
The accepted value for acceleration due to gravity on Earth is
9.81m/s2
-9.81 m/s2
77
Describe the relationship between mass and acceleration
simple
linear
quadratic
inverse
78
The standard unit of mass_______.
mass
grams
megagrams
kilogram
79
The bottle of water had a mass of 1.2 kg
Fundamental
derived
80
.30kg baseball pitched velocity of 60 m/s. Batted back with velocity 90. What is the change in the balls momentum
pf-pi
104
9
45
81
The metric prefix Giga means
108
105
109
1010
82
What was the cyclist's acceleration during this 10.0 second time interval?
0.50 m/s2
0.60 m/s2
83
A horizontal line on a position versus time graph indicates that
the object was at rest during that time interval.
the object was accelerating during that time interval
the object was slowing down at that time interval
84
To find the slope of a set of data we always divide the change in the
fourth quadrant
smallest
independent variable by the dependent variable
dependent variable by the independent variable
85
Which of the following equations can be used to directly calculate the change in a object’s momentum?
p=m/v
delta
dp=FDt
86
The graph below displays what type of relationship?
Inverse
quadratic
direct
87
A 75 kg person running around a corner crashes into a stationary 80 kg person. The momentum of the 80 kg person will
decrease
reamin the same
increase
88
To avoid reading a measurement incorrectly, laboratory instruments should be read
while running past it
at eye level
while standing
below eye level
89
An ant walks all the way around the perimeter of a picnic table one time. What is the ant’s displacement?
one
4 meters
two
zero
90
The metric prefix kilo means
-100
1000
100
10
91
John added 35.0 mL of a liquid. Are the previous units derived or fundamental?
Derived
fundamental
92
Express 0.0000064 mm in scientific notation.
6.4 x 10-6
6.4x106
-6.4x106
4.6x106
93
acceleration is defined as
the rate of change of velocity
the change in velocity
a rate of displacement
the rate of change of displacement
94
An apple weighs 1 Newton. State if the unit is derived or fundamental.
fundamental
derived
95
The area calculated underneath the curve on a velocity versus time graph describes what quantity?
velocity
acceleraiton
displacement
96
Which would hit the ground first if dropped in a vacuum (no air-resistance) – a feather or a metal bolt?
the feather
they would hit at the same time
the metal bolt
97
When adding two vector quantities whose directions are not the same or opposite
pray
connect the tail of one vector to the head of the other
I dunno
add and then divide
98
A 23 N stone rests on a 192 N table. What is the force the table exerts on the stone? In what Direction?
215 N up
23 N up
192 N down
23 N down
99
To measure displacement if you walk 20 steps to the north and then 30 steps to the west you need to
add them together
measure a straight line from your starting point to your ending point
subtract them
divide them
100
The apparent shift in the position of an object when it is viewed from various angles is ___________.
accuracy
combination units
parallax
kilogram
101
Which of the following statements is not one of Newton's laws of motion?
force on an object is equal to its mass times its acceleration
when two objects interact, they apply forces of equal and opposite
what goes up must come down
object will not change its motion unless a force acts on it.
102
When multiplying and dividing measures with a certain amount of significant figures it is important to know
the number without a decimal
the most amount of significant figures in any measure being used
the number with a decimal
the least number of significant figures in any measure being used
103
A soccer ball collides with another soccer ball at rest. The total momentum of the balls
increase
constant
decreases
104
The impulse experienced by a body is equivalent to the body’s change in
force
momentum
time
105
bicycle with a radius of 4.0 m. The speed of the bicycle is 2.0 m/s. The mass of child and bicycle is 43. Central acce?
-1.0 m/s2
1.0 m/s2
106
It took 2,260 kJ to boil the water
Derived
fundamental
107
John rode his bicycle an average of 16.8 mph across the state. Derived or Fundamental?
derived
fundamental
108
what can you do to reduce sting of catching ball
you can do nothing
catch sooner
relax to add time
109
The degree to which the measurement of a quantity can be reproduced is called
being correct
accuracy
precision
observation
110
Round the following numbers to two significant figures: 49.8 mL
50 mL
5.0 x 101 mL
5.0x10-1 mL
4x10-1 mL
111
What would the graph of the cyclist’s acceleration versus time during this 10.0 second interval look like?
horizontal line
negative linear line
positive linear line
112
What was the cat’s speed during the first 5 seconds?
-0.20
0.20
0.60
-0.60
113
This graph displays what type of relationship?
quadratic
Linear
inverse
114
A child with a mass of 23.0 kg rides a bike with a mass of 5.5 kg at a velocity of 4.50 m/s to the south. What is true?
they have same momentum
bike has more momentum
child has more momentum
115
What are the units on the coefficient of friction?
there are none
m/s
kilometers
116
the magnitude of the gravitational force acting on an object is
weight
frictional force
inertia
mass
117
Which of the following is written correctly in scientific notation for the measure 380, 000 meters?
38x107
3.8000
3.8 X 105
8300000
118
When adding and subtracting how do you figure out the amount of significant figures?
least precise decimal value
withou decimals
whatever looks best
most precise
119
The change in an object’s momentum is equal to
the product of the mass of the object and the time interval.
velocity
time
impulse
120
A basketball moving at a speed of 3 m/s hits a wall and rebounds at 3 m/s. What happens to the momentum?
increases
remain the same
decreases
121
During which interval(s) was the cat at rest?
5.0-10.0
10.0-20.0
0.0-20.0
10.0-15.0
122
Which of the following is called the language of Physics?
einstein
latin
mathematics
science
123
Until the middle of the 16th century, most people believed _____________ was the center of the universe.
sun
earth
moon
124
For a system in simple harmonic motion, which of the following is the amount of time per cycle?
amplitude
period
125
Which of the following is the SI unit of velocity?
seconds per meter
seconds by meter
meters per second
minutes per kilometer
126
Position versus time graph. The slope of the line drawn tangent to a point on the curve of this graph describes what
time
velocity
meters
instantaneous velocity
127
Objects of different masses fall at the same rate on Earth when we ignore air resistance.
false
true
128
An indication of how close a measurement comes to the actual value of the quantity is ________________.
precision
accuracy
129
The Graph below displays what type of Relationship?
Quadratic
inverse
direct
130
We run experiments multiple times to increase our
Accuracy
the percentage of error
answer
precision
131
A child with a mass of 23.0 kg rides a bike mass of 5.5 kg at a velocity of 4.50 m/s to the south. Child momentum?
103.5
104
29
132
Convert 469.1 mg to grams
0.4691 g
469100
46.91
0.004691

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