### Solving Kinematics Problems 9. While drag racing out of our school

```Oct. 17, 2012
AGENDA:
1 – Bell Ringer
2 – HW Review
3 – Results Section of a
Lab
Today’s Goal:
Students will be able to
understand how to write an
effective results section.
Homework
1.
tomorrow (we will use a small
Styrofoam ball, not a tennis ball)
and do a hypothesis on p. 18
2.
Acceleration HW: p. 9-11
CHAMPS for Bell Ringer
C – Conversation – No Talking
H – Help – RAISE HAND for questions
A – Activity – Solve Bell Ringer on binder paper.
Homework out on desk
M – Materials and Movement – Pen/Pencil,
Notebook or Paper
P – Participation – Be in assigned seats, work
silently
S – Success – Get a stamp! I will collect!
Wednesday, Oct.
th
17
(p. 21)
Objective:
Bell Ringer:
Students will
1. You are driving a car at 30 m/s and
be able to
you break. It takes 10 seconds for you
understand
to stop. What is your acceleration?
how to write
2. How do you calculate acceleration
an effective
from a velocity time graph?
results section.
4 MINUTES
REMAINING…
Wednesday, Oct.
th
17
(p. 21)
Objective:
Bell Ringer:
Students will
1. You are driving a car at 30 m/s and
be able to
you break. It takes 10 seconds for you
understand
to stop. What is your acceleration?
how to write
2. How do you calculate acceleration
an effective
from a velocity time graph?
results section.
3 MINUTES
REMAINING…
Wednesday, Oct.
th
17
(p. 21)
Objective:
Bell Ringer:
Students will
1. You are driving a car at 30 m/s and
be able to
you break. It takes 10 seconds for you
understand
to stop. What is your acceleration?
how to write
2. How do you calculate acceleration
an effective
from a velocity time graph?
results section.
2 MINUTES
REMAINING…
Wednesday, Oct.
th
17
(p. 21)
Objective:
Bell Ringer:
Students will
1. You are driving a car at 30 m/s and
be able to
you break. It takes 10 seconds for you
understand
to stop. What is your acceleration?
how to write
2. How do you calculate acceleration
an effective
from a velocity time graph?
results section.
1minute Remaining…
Wednesday, Oct.
th
17
(p. 21)
Objective:
Bell Ringer:
Students will
1. You are driving a car at 30 m/s and
be able to
you break. It takes 10 seconds for you
understand
to stop. What is your acceleration?
how to write
2. How do you calculate acceleration
an effective
from a velocity time graph?
results section.
30 Seconds Remaining…
Wednesday, Oct.
th
17
(p. 21)
Objective:
Bell Ringer:
Students will
1. You are driving a car at 30 m/s and
be able to
you break. It takes 10 seconds for you
understand
to stop. What is your acceleration?
how to write
2. How do you calculate acceleration
an effective
from a velocity time graph?
results section.
BELLRINGER
TIME IS
UP!
Wednesday, Oct.
th
17
(p. 21)
Objective:
Bell Ringer:
Students will
1. You are driving a car at 30 m/s and
be able to
you break. It takes 10 seconds for you
understand
to stop. What is your acceleration?
how to write
2. How do you calculate acceleration
an effective
from a velocity time graph?
results section.
Shout Outs
Period 5 – Dominique
Period 7 – Rasheed
Oct. 17, 2012
AGENDA:
1 – Bell Ringer
2 – Homework Review
3 – Results Section of a
Lab
Today’s Goal:
Students will be able to
understand how to write an
effective results section.
Homework
1.
tomorrow (we will use a small
Styrofoam ball, not a tennis ball)
and do a hypothesis on p. 18
2.
Acceleration HW: p. 9-11
Week 6
Weekly Agenda
Monday – Acceleration
Tuesday – Acceleration
Wednesday – Acceleration
& Results Section of Labs
Thursday – Acceleration Lab
Friday – Quiz # 3
CHAMPS for Acceleration Problems
C – Conversation – No Talking unless directed to
work in groups
H – Help – RAISE HAND for questions
A – Activity – Solve Problems on Page 6-11
M – Materials and Movement – Pen/Pencil, Packet
Pages 6-11
P – Participation – Complete Page 6-11
S – Success – Understand all Problems
Solving Kinematics Problems
Step 1: Read the Problem, underline
key quantities
Step 2: Assign key quantities a
variable
Step 3: Identify the missing variable
Step 4: Choose the pertinent
equation:
Step 5: Solve for the missing
variable.
Step 6: Substitute and solve.
Solving Kinematics Problems
9. While drag racing out of our school parking lot, I time
myself at a speed of 40 meters per second seven
seconds after starting. What was my acceleration during
this time?
Solving Kinematics Problems
9. While drag racing out of our school parking lot, I time
myself at a speed of 40 meters per second seven
seconds after starting. What was my acceleration during
this time?
Step 1: Read the Problem, underline key quantities
Solving Kinematics Problems
9. While drag racing out of our school parking lot, I time
myself at a speed of 40 meters per second seven
seconds after starting. What was my acceleration during
this time?
Step 1: Read the Problem, underline key quantities
Solving Kinematics Problems
9. While drag racing out of our school parking lot, I time
myself at a speed of 40 meters per second seven
seconds after starting. What was my acceleration during
this time?
Step 2: Assign key quantities a variable
Solving Kinematics Problems
9. While drag racing out of our school parking lot, I time
myself at a speed of 40 meters per second seven
seconds after starting. What was my acceleration during
this time?
Step 2: Assign key quantities a variable
Vf = 40 m/s
Vi = 0 m/s
Δt = 7s
Solving Kinematics Problems
9. While drag racing out of our school parking lot, I time
myself at a speed of 40 meters per second seven
seconds after starting. What was my acceleration during
this time?
Step 3: Identify the missing variable
Vf = 40 m/s
Vi = 0 m/s
Δt = 7s
a=?
Solving Kinematics Problems
9. While drag racing out of our school parking lot, I time
myself at a speed of 40 meters per second seven
seconds after starting. What was my acceleration during
this time?
Step 4: Choose the pertinent equation:
Vf = 40 m/s
Vi = 0 m/s
Δt = 7s
a=?
Δx = xf – xi
V = Δx/Δt
a = (vf – vi)/Δt
Solving Kinematics Problems
9. While drag racing out of our school parking lot, I time
myself at a speed of 40 meters per second seven
seconds after starting. What was my acceleration during
this time?
Step 4: Choose the pertinent equation:
Vf = 40 m/s
Vi = 0 m/s
Δt = 7s
a=?
Δx = xf – xi
V = Δx/Δt
a = (vf – vi)/Δt
Solving Kinematics Problems
9. While drag racing out of our school parking lot, I time
myself at a speed of 40 meters per second seven
seconds after starting. What was my acceleration during
this time?
Step 4: Choose the pertinent equation:
Vf = 40 m/s
Vi = 0 m/s
Δt = 7s
a=?
Δx = xf – xi
V = Δx/Δt
a = (vf – vi)/Δt
Solving Kinematics Problems
9. While drag racing out of our school parking lot, I time
myself at a speed of 40 meters per second seven
seconds after starting. What was my acceleration during
this time?
Step 5: Solve for the missing variable.
Vf = 40 m/s
Vi = 0 m/s
Δt = 7s
a=?
a = (vf – vi)/Δt
Solving Kinematics Problems
9. While drag racing out of our school parking lot, I time
myself at a speed of 40 meters per second seven
seconds after starting. What was my acceleration during
this time?
Step 6: Substitute and solve.
Vf = 40 m/s
Vi = 0 m/s
Δt = 7s
a=?
a = (vf – vi)/Δt
Solving Kinematics Problems
9. While drag racing out of our school parking lot, I time
myself at a speed of 40 meters per second seven
seconds after starting. What was my acceleration during
this time?
Step 6: Substitute and solve.
Vf = 40 m/s
Vi = 0 m/s
Δt = 7s
a=?
a = (vf – vi)/Δt = (40 – 0 m/s)/7 s = 5.71 m/s2
Solving Kinematics Problems
9. While drag racing out of our school parking lot, I time
myself at a speed of 40 meters per second seven
seconds after starting. What was my acceleration during
this time?
Step 5: Solve for the missing variable.
Vf = 40 m/s
Vi = 0 m/s
Δt = 7s
a=?
a = (vf – vi)/Δt
Solving Kinematics Problems
9. While drag racing out of our school parking lot, I time
myself at a speed of 40 meters per second seven
seconds after starting. What was my acceleration during
this time?
Step 5: Solve for the missing variable.
Vf = 40 m/s
Vi = 0 m/s
Δt = 7s
a=?
a = (vf – vi)/Δt
Solving Kinematics Problems
Step 1: Read the Problem, underline
key quantities
Step 2: Assign key quantities a
variable
Step 3: Identify the missing variable
Step 4: Choose the pertinent
equation:
Step 5: Solve for the missing
variable.
Step 6: Substitute and solve.
Solving Kinematics Problems
14. Use the following graph to answer the following
questions about the acceleration of Bob the Pickup:
Velocity of Bob the Pickup
Velocity (feet/minute)
3000
2500
2000
1500
1000
500
0
0
10
20
30
40
50
60
Time (minutes)
a. What is the acceleration of Bob the Pickup in the
first 10 minutes that the graph shows us?
Solving Kinematics Problems
14. Use the following graph to answer the following
questions about the acceleration of Bob the Pickup:
a. What is the acceleration of Bob the Pickup in the
first 10 minutes that the graph shows us?
Step 1: Read the Problem, underline key quantities
Classwork for 10/17 (p. 13)
Example 1:
Growth Table
Growth of Plant (cm)
1.0
1.0
1.0
1.0
0.9
1.0
0.3
0.2
0.3
0.3
1.0
1.0
What do you expect the data table earned (out of 3)? Why?
Time (days)
`1
2
3
4
5
6
7
8
9
10
11
12
Classwork for 10/17: Rubric (p. 12)
Data Table:
0 Points:
1 Point:
2 Points:
3 Points:
Data is not given in a data
table.
There is a data table. A
large amount of data is
wrong or missing.
Data is recorded in a data
table. Some mistakes may
is mostly accurate.
All data is accurately
recorded in a data table.
Units are not given.
Table is not drawn very
neatly.
Units are given correctly.
Data table has no title, or a
title that makes no sense.
Units are not given
correctly, or at all.
Table is not drawn neatly.
Data table has no title, or a
title that makes no sense.
Data table is neatly drawn.
Data table is titled (e.g.
Table 1: Position vs. Time
of Walker)
Classwork for 10/17 (p. 13)
Example 1:
Growth Table
Growth of Plant (cm)
1.0
1.0
1.0
1.0
0.9
1.0
0.3
0.2
0.3
0.3
1.0
1.0
Time (days)
`1
2
3
4
5
6
7
8
9
10
11
12
What do you expect the data table earned (out of 3)? Why?
3/3, because it is complete, neatly drawn, has correct units, and has a title
Classwork for 10/17: (p. 14)
F igure 1: Growth of Plant v s. Time
1 .2
Growth (cm)
1
0 .8
0 .6
0 .4
0 .2
0
1
2
3
4
5
6
7
8
9
10 11 12
Time (days)
The growth of the plant each day is recorded in Table 1. As Figure 1 shows, growth was fairly
constant from days 1 through six. On day 7, the growth of the plant fell markedly, and then rose
back to its earlier value on day 11.
What do you expect the graph earned (out of 3)? Why?
What do you expect the text earned (out of 3)? Why?
Classwork for 10/17: Rubric (p. 12)
Graph:
0 Points:
1 Point:
2 Points:
3 Points:
Data is not graphed.
There is a graph, but the
data is mostly plotted
incorrectly, or mostly
missing.
Data is plotted on a graph,
but a few mistakes have
All pertinent data is
correctly plotted in a
graph.
Axes may be backwards.
Axes are correct.
Graph is a little sloppy.
Graph is neatly drawn.
Axes are too big or too
small—graph is too
“zoomed out” or too
“zoomed in”.
Axes are sized to show all
data without being too
“zoomed out”
Axes may be backwards.
Graph is very sloppy.
Axes are too big or too
small—graph is too
“zoomed out” or too
“zoomed in”.
Axes are unlabeled.
Axes are labeled, but
without units.
Graph has no title, or title
doesn’t make sense.
Graph has no title, or the
title doesn’t make sense.
Axes are labeled, with
units.
Graph is titled (e.g. Figure
1: Position vs. Time of
Walker)
Classwork for 10/17: (p. 14)
F igure 1: Growth of Plant v s. Time
1 .2
Growth (cm)
1
0 .8
0 .6
0 .4
0 .2
0
1
2
3
4
5
6
7
8
9
10 11 12
Time (days)
The growth of the plant each day is recorded in Table 1. As Figure 1 shows, growth was fairly
constant from days 1 through six. On day 7, the growth of the plant fell markedly, and then rose
back to its earlier value on day 11.
What do you expect the graph earned (out of 3)? Why?
3/3, Graph is titled, neat, axes are labeled, and all pertinent data is there.
What do you expect the text earned (out of 3)? Why?
3/3, professional tone, mentions title, clear language, measures important features (change in
growth rate)
Group Work
Grade the Results Sections on pages 15-16
Independent Work
Grade the Results Sections on pages 16-17
```