Jeopardy
PHY101
Chapter One Review
Cheryl Dellai
Study of Motion
Study of Motion
Physical
Quantities
Speed &
Velocity
Acceleration
Types of
Motion
Problems
Potpourri
$100
$100
$100
$100
$100
$100
$200
$200
$200
$200
$200
$200
$300
$300
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$300
$300
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$400
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$400
Physical Quantities
$100
Name 3 Basic
Physical Quantities
ANSWER
Physical Quantities
$200
What are the three systems of measurement?
ANSWER
Physical Quantities
$300
What are the names of the exponents?
109 is _____ 106 is _____ 103 is _____
10-9 is _____ 10-6 is _____ 10-3 is _____
ANSWER
Physical Quantities
$400
Complete the Following Table
Name
Standard
Unit Definition
Length
Time
Mass
ANSWER
Speed & Velocity
$100
What difference between a scalar and a vector?
ANSWER
Speed & Velocity
$200
What is the equation for average velocity?
What the units for speed or velocity?
ANSWER
Speed & Velocity
$300
What is the difference between speed and
velocity?
ANSWER
Speed & Velocity
$400
What is the difference between
average and instantaneous velocity?
ANSWER
Acceleration $100
What is the equation for average acceleration?
What are the units in each system?
ANSWER
Acceleration $200
What is centripetal acceleration?
ANSWER
Acceleration $300
What is local gravity on planet Earth?
ANSWER
Acceleration $400
What is the acceleration down a
frictionless incline?
ANSWER
Types of Motion
$100
What is zero velocity?
ANSWER
Types of Motion
$200
What is meant by constant
velocity?
ANSWER
Types of Motion
$300
What is meant by constant acceleration?
ANSWER
Types of Motion
$400
ASSUME a is constant Check what is in the following equations.
d
vf
vO
a
t
vf = vO + at
d = ½*(vf +vO)t
d = vOt + ½at2
vf2 = vO2 +2ad
ANSWER
Problems $100
A baseball is thrown vertically upward with a speed
of 20.0 m/s. How long does it take to get to the top
of its path?
ANSWER
Problems $200
What is the magnitude of a 30.0-N force and a 30.0-N
force acting at right angles to each other?
ANSWER
Problems $300
A car traveling westward at 20 m/s turns around and
travels eastward at 15 m/s. What is the change in velocity
of the car?
a. 5 m/s west
d. 35 m/s east
b. 35 m/s
c. 35 m/s west
ANSWER
Problems $400
What is the average acceleration of a ball that is
thrown vertically upward on Vulcan with an initial
speed of 40.0 m/s if it takes 4.00 s to return?
ANSWER
Potpourri $100
List the steps in the scientific method
ANSWER
Potpourri $200
What are the four fundamental forces.
ANSWER
Potpourri $300
What is a period?
What is meant by frequency?
ANSWER
Potpourri $400
ASSUME g is constant Check what is in the following equations.
Dy
vf
vO
g
t
vf = vO - gt
Dy = ½*(vf +vO)t
Dy = vOt - ½gt2
vf2 = vO2 – 2gDy
ANSWER
Physical Quantities
$100
Answer
Name 3 Basic
Physical Quantities
•Mass
•Length
•Time
•Temperature
•Current
•Luminosity
•Mole
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Physical Quantities
$200
Answer
What are the three systems of measurement?
SI
System International Metric System
cgs
Older metric system
Common In use in USA
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Physical Quantities
$300
Answer
What are the names of the exponents?
109 is Giga G
106 is Mega M 103 is kilo
10-9 is nano
10-6 is micro µ
n
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10-3 is milli
k
m
Physical Quantities
$400
Answer
Name
Standard
Unit
Definition
Length
Speed of Light
C= 3.00 *108 m/s
meter
Extension of space
Time
Atomic Clock
based on a Cs-133
transition
second
Mass
Pt-Ir cylinder in
France
C-12
kilogram
kg
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m
Sequence of Events
s
u = 1.66*10-27 kg
Resistance to
acceleration
Speed & Velocity $100
Answer
What difference between a scalar and a vector?
A scalar is a magnitude like one meter.
A vector has both a magnitude and direction like
one meter pointing North. A vector is an ordered
pair.
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Speed & Velocity $200
Answer
What is the equation for average velocity?
vave = Dx/Dt
vave = ½(vO + vF) if a = constant
SI unit
m/s
cgs unit
cm/s
Common unit ft/s
Unit of length/Unit of time in general
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Speed & Velocity $300
Answer
What is the difference between speed and velocity?
Speed is a magnitude and velocity is a vector.
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Speed & Velocity $400
Answer
What is the difference between average and instantaneous velocity?
Average velocity is based on the total displacement/total time while
instantaneous velocity is based on small increment of time Dt going
to zero.
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Acceleration $100
Answer
What is the equation for average acceleration?
aave = Dv/Dt
SI unit
m/s2
cgs unit
cm/s2
Common unit ft/s2
Unit of length/Unit of time2 in general
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Acceleration $200
Answer
What is centripetal acceleration?
When an object moves in a circle, the
acceleration that points to the center of
the circle is called the centripetal
acceleration.
vtangential = vt = 2p(radius)/Period = 2pr/T
acentripetal = ac = vt2/r
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Acceleration $300
Answer
What is local gravity on planet Earth?
SI
g =9.80 m/s² down
cgs
g =980 cm/s² down
Common g =32.2 ft/s² down
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Acceleration $400
Answer
What is the acceleration down a frictionless incline?
The acceleration is less than local gravity but greater than zero.
adown incline = gsinq = g (height/length of incline)
length
height
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q
Types of Motion $100
Answer
What is zero velocity?
Displacement in m
6
5
4
3
2
1
0
No motion
0
5
10
Time in s
distance = d = constant v = 0 a = 0
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15
Types of Motion $200
Answer
Constant motion
distance = d = increasing or decreasing
v = constant
a=0
140
Displacement in m
What is meant by constant velocity?
120
100
80
60
40
20
0
0
5
10
Time in s
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15
Types of Motion $300
Answer
The object’s velocity is changing at a
fixed rate.
velocity = v = increasing or decreasing
a = constant
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Displacement in m
What is meant by constant acceleration
in a straight line?
160
140
120
100
80
60
40
20
0
0
5
10
Time in s
15
Types of Motion $400
Answer
ASSUME a is constant Check what is in the following equations.
d
vf = vO + at
d = ½*(vf +vO)t
X
d = vOt + ½at2
X
vf2 = vO2 +2ad
X
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vf
vO
a
X
X
X
X
X
X
t
X
X
X
X
X
X
X
Problems $100
Answer
A baseball is thrown vertically upward with a speed
of 20.0 m/s. How long does it take to get to the top
of its path?
Let gravity be g = 9.8 m/s² down
vf = 0 = vO – gt
t = vO / g = 2.04 s
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Problems $200
Answer
What is the magnitude of a 30.0-N force and a 30.0-N
force acting at right angles to each other?
30.0 N
Net Force =42.4 N
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30.0 N
Problems $300
Answer
A car traveling westward at 20 m/s turns around and travels
eastward at 15 m/s. What is the change in velocity of the car?
d. 35 m/s east
Let east be +
Let west be –
Dv = vf – vO = 15 m/s - (-20 m/s) = 35 m/s east
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Problems $400
Answer
What is the average acceleration of a ball that is
thrown vertically upward on Vulcan with an initial
speed of 40.0 m/s if it takes 4.00 s to return?
Time up is 2.00 s
Time down is 2.00 s
Using time up t = 2.00s
vf = 0 = vO + at
a = -vO /t = -(40.0 m/s)/(2.00 s) = -20 m/s²
Local gravity on Vulcan is 20 m/s² down
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Potpourri $100
Answer
List the steps in the scientific method
1. Recognize the problem or observe event.
2. Hypothesis “Guess”.
3. Predict.
4. Devise and perform experiment.
5. Develop theory (data base analysis).
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Potpourri $200
Answer
What are the four fundamental forces.
1. Strong nuclear forces
2. Electromagnetism
3. Weak nuclear forces
4. gravity
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Potpourri $300
Answer
What is a period?
T = Time to complete one circle in seconds
What is meant by frequency?
f =1/T Units in Cycles/s or Hertz
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Potpourri $400
Answer
ASSUME g is constant Check what is in the following equations.
Dy
vf = vO - gt
Dy = ½*(vf +vO)t
X
Dy = vOt -½gt2
X
vf2 = vO2 -2g Dy
X
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vf
vO
g
X
X
X
X
X
X
X
X
X
X
X
t
X
X
X
Thank You for playing
Study of Motion
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