u1 pick up turn in - ms-kellys-universe.weebly.comon a half sheet solve using guess: if you are...
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PICK UP 1. Papers & calculator
TURN INU1 – 7 (salmon)
DO NOW1. On a half sheet solve
using GUESS:
If you are displaced 5m
behind where you started
over a time of 2 seconds.
What is your velocity?
HW: U1 – 10 (brown) 11/17
Next Test: Friday!
U1
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Why it matters in LIFE:
Part of being a
functional human
being is being able to
understand what’s
happening in the world
around you!
Why it matters in THIS CLASS: Our Goal = 80%
Mastering today’s lesson (focused
participation, asking questions, etc)
is the first brick that will help us
reach our goal for this unit, and
eventually for the year
By the end of today, IWBAT…-Calculate displacement, initial velocity,
final velocity, time, and acceleration
using multiple equations
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TEKS:
4(B) describe and analyze motion in
one dimension using equations with
the concepts of distance,
displacement, speed, average
velocity, instantaneous velocity, and
acceleration;
Topic:
Kinematic Equations
By the end of today, IWBAT…
-Calculate displacement, initial
velocity, final velocity, time, and
acceleration using multiple
equations
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How velocity changes over time.
or
Where:
a = acceleration (m/s2)
v = velocity (m/s)
∆t = time (s)
ACCELERATION, a (Units m/s2)
𝑎 =∆𝑣
∆𝑡𝑎 =
𝑣𝑓 − 𝑣𝑖
∆𝑡
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How velocity changes over time.
Where:
a = acceleration (m/s2)
v = velocity (m/s)
∆d = displacement (m)
ACCELERATION, a (Units m/s2)
𝑎 =𝑣𝑓2 − 𝑣𝑖
2
2∆𝑑
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Where:
a = acceleration (m/s2)
vi = initial velocity (m/s)
∆d = displacement (m)
∆t = time (s)
DISPLACEMENT, ∆d (Units m)
∆𝑑 = 𝑣𝑖∆𝑡 +1
2𝑎∆𝑡2
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A honey badger starts at rest and travels 13m with
an acceleration of 1.4 m/s2. What was its final
velocity?
EXAMPLE #1
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Vince, Mrs. K’s husband, drives like a grandpa. As a
light turns red, he starts with a velocity of 12 m/s
and brakes to a stop with an acceleration of -3
m/s2. How far did he travel during this time?
#2 W/ PARTNER
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Stitch travels 150,000,000m to get to earth from
his home planet. If it takes him 72 hours, and he
starts from rest, what was his acceleration?
EXAMPLE #3
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Nyan Cat travels 134m over a time of 6s. If Nyan
Cat has an acceleration of 4.5m/s2, what was its
initial velocity?
#4 W/ PARTNER
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A leopard sprints from a velocity of 20 m/s to 39
m/s in 4.1 seconds. How far did the leopard
travel in the given time?
EXAMPLE #5
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But Mrs. K! What if there isn’t an equation with the givens and the unknowns?!!!
Sometimes, more than one equation needs to be used.
Figure out what you’re missing, find it, and then go back to the first EQ.
COMPLEX KINEMATICS
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A leopard sprints from a velocity of 20 m/s to 39
m/s in 4.1 seconds. How far did the leopard
travel in the given time?
a= 4.63 m/s2
Δd = 120.92 m
EXAMPLE #5
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An airplane in the sky is accelerating at a rate of
24 m/s2. If it takes the plane 6 seconds to travel
1200 m, what is the final velocity of the airplane?
vi = 128 m/s
vf = 272 m/s
#6 W/ PARTNER
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Procedure for IP time:
1) Silent work time
2) Try and solve without notes first!
Hierarchy of who to ask
1) Your brain
2) Your notes
3) Your partner (quiet whisper)
4) Ms. Kelly
INDEPENDENT PRACTICE!
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EXIT TICKET (7 MIN)
A train accelerates from a velocity of 4
m/s to 27 m/s in 13 seconds. How far
did the train travel in the given time?
SHOW ALL WORK FOLLOWING THE GUESS METHOD.
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EXIT TICKET (7 MIN)
A train accelerates from a velocity of 4
m/s to 27 m/s in 13 seconds. How far
did the train travel in the given time?
Δd = 201.57 m
*No G.U.E.S.S, no credit!