physics – review linear motion it’s time to play… physics jeopardy
DESCRIPTION
Today’s Categories Scalar or Vector What Are the Units? Finish the Formula… “Free Fallin’” “g” The Answer is 4.9 Regular JeopardyTRANSCRIPT
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Physics – ReviewLinear Motion
It’s time to play…
Physics Jeopard
y
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Rules for the GameWhen it is your team’s turn, select a category and an amount.
After Mr. Dillon has finished asking the question, any team may buzz in. If you buzz in early, you will not be called on.If the team that buzzes in answers correctly, they get those
points and choose the next category. If the team answers incorrectly, they lose the points. Mr.
Dillon will then re-read the question so the other teams can have a chance to answer. A team is NOT obligated to
answer if they do not want to.There will be a Final Jeopardy question at the end of the
game where teams can wager the points they have earned.
Any questions?
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Today’s Categories
Scalar or VectorWhat Are the Units?Finish the Formula…
“Free Fallin’”“g”
The Answer is 4.9
Regular Jeopardy
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Scalar or Vector
What are the Units?
Finish the Formula…
100 100 100200 200 200300 300 300400 400 400500 500 500
“Free-Fallin’” “g” The Answer is 4.9
100 100 100200 200 200300 300 300400 400 400500 500 500
Go to Final JeopardyGo to Double Jeopardy
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100 Points
SpeedScalar Quantity
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200 Points
VelocityVector Quantity
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300 Points
DistanceScalar Quantity
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400 Points
Displacement
Vector Quantity
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500 Points
Acceleration
Vector Quantity
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100 PointsThis unit is the typical SI
(metric) unit for distance.
Meter (m)
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200 PointsThis is an example of a
unit for speed.
Meters per second (m/s)
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300 PointsThis unit is the typical SI
(metric) unit for displacement.
Meters (m)
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400 PointsThis is an example of a
unit for velocity.
Meters per second (m/s)
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500 PointsThis is an example of a unit for acceleration.
Meters per second per second (m/s2)
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100 PointsAverage Velocity: v = …
or
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tdv
2fi vvv
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200 PointsFinal Velocity: vf = …
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atvv if
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300 PointsAcceleration: a = …
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tvv
tva if
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400 PointsDistance: d = …
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2
21 tatvdd ii
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500 PointsFinal VelocitySquared: vf
2 = …
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davv if 222
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100 PointsThis is the band that is famous for recording
the song: “Free Falling.”
Tom Petty and the Heartbreakers
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200 PointsThis is how the main line of the chorus goes… (be
sure to sing it to get your points.)
Now I’m free… Free fallin’.
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300 PointsAccording to the lyrics,
“She’s a good girl…She’s crazy about…”
this person.Elvis
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400 PointsAccording to the lyrics, you need to “move west down…” this boulevard.
Ventura
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500 PointsThis is the Tom Cruise
movie where his character sings “Free Falling” …significantly
off key…Jerry McGuire
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100 PointsThis is the value of “g” in meters/second2 on
Earth.
9.8 m/s2
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200 PointsThis is the value of “g”
in feet/second2 on Earth.
32 ft/s2
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300 PointsThis is the quantity that the constant “g” stands
for.
Acceleration Due to Gravity
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400 PointsTrue or False: Gravity
on Earth accelerates all objects in the same way.
True
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500 PointsThis is usually the
primary cause of why objects in free fall do
not always accelerate at 9.8 m/s2. Air Resistance
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100 PointsThis is half of “g” on
Earth.
4.9 m/s2
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200 PointsThis is how far you
would travel during the first second of free fall
on Earth.4.9 meters
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300 PointsThis is your acceleration
down a ramp that is inclined at a 45 angle
(assuming no friction). 4.9 m/s2
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400 PointsThis is your average
speed during the first second of free fall on
Earth.4.9 m/s
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500 PointsSimplify:
4.9
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75.025.020162662
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Today’s Categories
“Free Fallin’” for RealGraph This
Begins with “D”Constant Velocity?Vocab Schmocab
Solve This
Double Jeopardy
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“Free-Fallin’” for Real Graph This Begins with
“D”200 200 200400 400 400600 600 600800 800 8001000 1000 1000
Constant Velocity?
Vocab Schmocab Solve This
200 200 200400 400 400600 600 600800 800 8001000 1000 1000
Go to Final Jeopardy
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200 PointsAn object in free-fall is technically only being
acted on by this.
Gravity
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400 PointsThis is value of “g” on
Earth.
9.8 m/s2
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600 PointsAfter the first second of free-fall, an object will
be moving this fast (assuming no air
resistance).9.8 m/s
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800 PointsAfter the first second of free-fall, an object will be accelerating at this rate (assuming no air
resistance).9.8 m/s2
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1000 PointsSuppose that a feather and a
brick are released from rest at the same time and from the
same height. This object will hit the ground first (assuming
no air resistance).They will hit at the same time.
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200 PointsOn a position (or
distance or displacement) versus time graph, the slope tells you about this.
Speed or Velocity
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400 PointsOn a velocity (or speed) versus time graph, the slope tells you about
this.Acceleration
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600 PointsOn a velocity (or speed) versus time graph, the area “under the curve”
tells you about this.Distance or Displacement
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800 PointsOn a position (or
distance or displacement) versus
time graph, the sign of the slope tells you about
this.Direction
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1000 PointsBased on the graph below, what is the acceleration, velocity, and
totaldisplacement
at t = 6 seconds?a = 0 m/s2;
v = 20 m/s; d = 80 m
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200 PointsThis is how far an object travels, but direction is
not important.
Distance
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400 PointsThis is how far an object
ends up from it’s original starting point
(direction is important).Displacement
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600 PointsThis is the primary
difference between a scalar quantity and a
vector quantity.Direction
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800 PointsGravity always acts in
this direction.
Down
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1000 PointsThis is another word for a negative acceleration.
Deceleration
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200 PointsConstant velocity?
Moving at the same speed and in the same
direction.Yes.
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400 PointsConstant velocity?
Increasing your speed.
No.
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600 PointsConstant velocity? An
object experiencing free fall.
No.
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800 PointsConstant Velocity? Traveling at 50 mph
north and then traveling at 50 mph west.
No.
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1000 PointsConstant velocity? Driving at the same
speed in a circle.
No.
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200 PointsThis word is used in
physics to mean “with respect to.” It implies
the notion of perspective.
Relative
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400 PointsThis word is used to
described motion that is in a straight line.
Linear
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600 PointsThis word describes how
fast “something” is done with respect to
time.Rate
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800 PointsThis word describes speed, velocity, or
acceleration at a specific moment in time.
Instantaneous
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1000 PointsThis word describes speed, velocity, or
acceleration over an entire trip or span of
time.Average
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200 PointsAn apple takes 2.0
seconds to fall from rest to the ground. This is how fast (in m/s) the apple is
moving right before it hits the ground.19.6 m/s
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400 PointsAn apple takes 2.0
seconds to fall from rest to the ground. This is how far above the ground the
apple was initially. 19.6 meters
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600 PointsBob jumps off the
ground with an initial velocity of 1.2 m/s. This is the total time that he
is in the air.0.24 seconds
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800 PointsA car accelerates from
rest to 25 m/s in 5 seconds. This is the car’s acceleration.
5 m/s2
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1000 PointsA ball is thrown straight down
from a cliff with an initial downward velocity of 12 m/s. If the ball takes 4 seconds to
hit the ground, this is the height of the cliff.
126.4 meters
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FINAL JEOPARDYThe category for Final Jeopardy
is...
BobWrite down your wager
now.Here is the question…
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FINAL JEOPARDYBob jumps up in the air
with an initial velocity of 4 m/s. Assuming that there is no air resistance (and
that he is an NBA superstar), this is how
high he jumps.0.816 meters
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Physics – ReviewLinear Motion
And the winner is…Physic
s is phun!