Do now
Draw a distance time graph of an object that leaves its destination at
a fast constant speed then stops suddenly
Do now
agenda
• Do now
• Stations review
• closing
announcements
• HW- study for quiz tomorrow
stations
• In pairs- go to as many stations as you can.
• For each station completed, get 3 raffle tix
• When done with all, play Boom game to review
Per 2
• IP from Friday due today
closing
• How much time will you commit to studying today for the quiz
tomorrow? Why did you choose that time?
Do now
QUIZ TODAY- SIT 3 TO A TABLE!
 You
are talking to a friend after school who
wants to go to college one day but needs to
increase their GPA.
 What
are 2 ways your friend can improve their
grades?
agenda
•
•
•
•
do now (3 min)
Quiz LG4.2 (15 min)
Design Lab for this week (20 min)
Closing (5 min)
Quiz LG4.2
•Take your time, think through every
answer
•When finish, pick up a lab sheet
and start the “background”
reading.
•IF YOU DO NOT GIVE UNITS YOU
GET THE ANSWER WRONG!
Design an experiment
• Question: How can you design a course that will take a
marble 6 seconds to complete?
Materials:
• a plank or shelf, 12-16 inches wide and 4 feet long
• books to prop up the plank
• construction paper
• tape
• a marble
• a stopwatch or timer
• If I add obstacles to a marble course then it will last at least 6
seconds.
• If I use a 45 degree-angle compared to a 60 degree-angle then it
will take the marble 6 seconds to complete the course.
• If we put obstacles on our plank then the marble will slide down
the plank in 6 seconds.
• If we level the plank at the right height of 5 books compared to 2
books then the ball will complete its course in 6 seconds
Design Your Experiment
• Background/Intro:
Paraphrase IN YOUR OWN WORDS the information on page 54
and 56. Be sure to include:
1. Definition of terms
2. Formulas used
3. How you think acceleration and momentum apply to your
experiment
Set up a data table like this
You should do 3 trials of each design
and average them
Data
Finish Time
Momentum of
Marble
Acceleration of
Marble
Design 1
Design 2
Design 3
Lab Report Due Typed This Friday
• One for each STUDENT.
closing
• What do you think you will do differently on the lab report this
week compared to last week? ANSWER IN TAG OR RECEIVE
ZERO POINTS
• PLEASE STAPLE YOUR COMPLETED STATIONS FROM
YESTERDAY AND PUT IN A PILE ON YOUR TABLE
Do now
SIT WITH YOUR GROUP
• Write down your hypothesis for today’s lab.
• If you were absent yesterday you must join a group and get their
hypothesis.
• If we change the course, then the marble will only take six seconds
to finish the course.
• If we put up 3 obstacle then it will travel through in 6 seconds
• If we add construction paper to our course then it will slow down
the marble and result in the marble travelling slower.
• If you make put a maze on a plank then the marble will roll slower.
• if we block the marble while its going down then it will take the
marble longer to reach the bottom.
Send one person to come up and type
your hypothesis on this slide
agenda
•
•
•
•
•
Do now (1 min)
Lab (25 min)
Clean up (5 min)
Write Conclusion, Answer Q’s (when done cleaning)
Closing
Quiz LG 4.2 Results
Currently:
all
classes:
77.4%
If you want to see your grade, come after school. You will get your quiz
tomorrow after make-ups
All grades are on Powerschool
• If you did not take the quiz yesterday, you must make it up AFTER
SCHOOL TODAY or receive a zero.
• Sharae, Jon M., Dhamear, Dan C, Tracey, Chris, John H, Dominic,
Cache’e, Mariela, Maurice, Holly, Yaritza, Melissa
Announcements/ reminders
• Your lab report due date has been extended to Tuesday,
March 20.
• If you did not take the quiz yesterday, you must make it up
AFTER SCHOOL TODAY or receive a zero.
• Sharae, Jon M., Dhamear, Dan C, Tracey, Chris, John H,
Dominic, Cache’e, Mariela, Maurice, Holly, Yaritza, Melissa
Expectations during lab
• Stay on task-You only have today to do your lab!
• Use materials appropriately
• I ONLY HAVE 5 MARBLES AND THEY ARE BORROWED FROM
SOMEONE. If you lose yours, you will be written up.
• When I say it is time to clean up, begin cleaning up
IMMEDIATELY.
Send ONE PERSON from your group
to get a shelf and blue bin
• All materials must be returned at you got them at the end of
class
Every time you write a conclusion, do the HEPLA!
Repeat the original purpose and Hypothesis.
Evaluate your hypothesis using the data you collected.
Was your hypothesis supported or rejected by the data?
Make a Prediction based on your data.
Imagine you are doing the experiment another time, but this time you measure the time it takes
for the car to reach a 4 meter line. How long do you think it would take? Hint: if you know what
the velocity of your car is, and you know the distance it will travel, can you find the time it will
take?
Include at least 2-3 potential sources of error or Limitations of your data. OR include at least 2-3
improvements you would make to the experiment.
Why are the times for each trial slightly different? (Why do we do 3 trials
for each meter mark?)
What would happen to your results if you switched the person who did
the timing?
What would happen to your results if you switched to a different toy car
when you were halfway done with the lab?
Includes a potential Application for what you learned.
How can you apply what you did today in lab to the real world?
closing
• Please write a summary of one paragraph describing what you
did in class today. Must be in TAG for credit.
Do now
• Please read the procedure for the mini lab today and prepare
your materials.
agenda
•
•
•
•
•
Do now
Mini lab
Notes
Lab analysis
Progress Reports
LG 4.2
AlL classes: 77.7%
•Jon Malloy
Perfect Scores:
•James Utz
•Manny Quinones
•Justin Braun
AlL classes: 77.7%
Per 2: 77.3%
highest score: Jon Malloy,
James Utz 100% mastery
AlL classes: 77.7%
•Per 3: 78.1%
• highest score: Josh Reid 90%
mastery
AlL classes: 77.7%
•Per 4: 88.2%
•highest score: Alea Gonzalez
Andrea Allicock, Ivan Hernandez,
Uzziah Phillips, Scott Reed,
Anthony Trott 95% mastery
AlL classes: 77.7%
•Per 5: 71.6%
•highest score: Jamie McKiernan
95% mastery
AlL classes: 70.1%
• Per 6: 78.9%
•highest score: Justin Braun,
Manny Quinones 100% mastery
acceleration
 Acceleration is the rate at
which an object’s speed
changes.

Acceleration can be expressed as meters per second per second (m/s/s or
m/s2).

Forces such as gravity, air resistance, and friction can cause an object to
decelerate (decrease speed over time).

Other forces can cause and object to accelerate (increase speed over time).

If the car does not encounter these forces and travels at a constant speed,
then it is not changing speed and there is no acceleration or deceleration.
The formula for acceleration is
•
•
•
•
A= vf-vi/t
Measured in m/s/s or m/s2
Final Velocity- ending velocity
Initial velocity- starting velocity
• Measured in m/s, km/h etc.
• t-= time in motion
• Measured in seconds, minutes, hours
•
a
• Speed=
• V=d/t
• Acceleration=
A= vf-vi/t
• A. A lizard accelerates from 2 m/s to 10 m/s in 4 min. What is
the lizard’s average acceleration?
• B. A runner covers the last straight stretch of a race in 4
seconds. During that time, he speeds up from 5 m/s to 9 m/s.
What is the runner’s acceleration in this part of the race?
• 1 m/s/s
• C. A body with an initial velocity of 8 m/s moves with a
constant acceleration to 4 m/s in 2 minutes. Find its
acceleration.
• 28.35 cm/s/s
• 30.42 cm/s/s
closing
How could you change the
experiment to make the car
decelerate faster? How could make
it accelerate faster?
Do now Friday 3/16
•Look at the sample lab
report on your table.
(You may need to share)
What grade do you think
it got? Why?
agenda
•
•
•
•
Do now
Acceleration game
Lab report work time
Closing
Acceleration game
Lab report
•
•
•
•
Rubric is slightly different-check it first
Grade your own work before you hand it in!
YOU MUST have a bar graph with your report
If you can’t make a graph in word, draw it but make sure you
LABEL YOUR AXES
• Do not calculate acceleration or momentum from your data
but do discuss how it relates in your background/intro
closing
•How is velocity
different from
acceleration?