WARM-UP:HOMEWORK CHECKPlace on your desk:
*Calculator*Orange homework chart *Free Fall Acceleration WS
1) What is the value of “g”?
2) True or False: What is formula for final free-fall velocity when Vo is given.
Agenda1) Warm-Up 5 min
2) Free-Fall Acceleration Due!3) Pick-Up Graded Work4) Org. Green Folder 10 min
5) Purple Formula Sheet 5 min
6) Lab Procedures 10 min
7) Bugso-Copter Lab 45 min
8) Review Sheet Qs 20 min
LEARNING GOALS: •Express and interpret relationships symbolically in accordance with accepted theories to make predictions and solve problems mathematically, including problems requiring proportional reasoning and graphical vector addition.
HOMEWORK DUE:Free-Fall Acceleration WS
09 -27- 11
9.8 m/s2
Vf=Vo+gt
Bugso-Copter Lab• Lab Partner
• Read Procedures & Questions• Use supplies to design experiment/ Bugso-
Copter• Use notes for assistance
• Graph+Qs• LAB DUE TODAY!!
Free FallWhy does an object fall to the ground
when dropped?GRAVITY
Gravity pulls objects towards the Earth at an acceleration 9.8 meters/sec/sec
(m/s2).
Free Fall: How Fast Elapsed time – the time that has
passed since the beginning of the fall.
In free fall, an object accelerates at a rate of 10 m per second every second
Free Fall: How FastTo calculate velocity in free fall:velocity = acceleration X time
orv=gt
Remember: g= acceleration due to gravity
Free Fall: How Far
How fast something falls is different from how far it has fallen
Free-Fall: How Far?
To calculate distance fallen:distance=1/2g X time 2
or d=1/2gt2
Elephant VS FeatherWith no other
resistance, they both fall with the
SAME ACCELERATION:10 m/sec/sec
But we all know the elephant would land first. Why?
Answer:
AIR RESISTANCE
Air resistance alters the motion of falling objects by adding additional forces.
Formula Sheet!
Pop Warm-up checkSept. 19/20
DUE TODAY:• Free-Fall Notes (KEEP)
DUE NEXT CLASS:• Free Fall Acceleration WS• Test Review Sheet• Bring Calculator!
“In all things of nature there is something of the marvelous.”
Aristotle
In front of dividers:•Homework chart (orange)•Formula chart (purple)•Syllabus•Lab Safety Rules•Coupon (green)Notes/Handouts•Acceleration notes•Distance & Displacement Notes II•Distance & Displacement Notes I•Physics Vocab. Chart•Sig. Fig Handout•Linear Motion Notes•“About Science” Notes
Quizzes•Safety Quiz•Speed/Velocity QuizDaily Work•Linear motion reading assignment•Writing a hypothesis•All homework assignmentsLabs•Distance & Displacement Lab•Toy car labMisc.•Lose papers
B2
B4
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