a most grievous error
DESCRIPTION
a most grievous error. I am MASTER TIGRESS, and not “Tiger”. Credit goes to Ho Jian Kai for spotting this error. Some misconceptions. “When there is no air resistance, they fall at the same speed” This is incorrect. Speed is NOT constant. Only acceleration is constant. . - PowerPoint PPT PresentationTRANSCRIPT
A MOST GRIEVOUS ERROR
I am MASTER TIGRESS, and not “Tiger”
Credit goes to Ho Jian Kai for spotting this error
SOME MISCONCEPTIONS
“When there is no air resistance, they fall at the same speed”
This is incorrect. Speed is NOT constant. Only acceleration is constant.
SOME MISCONCEPTIONS
“When there is no air resistance, freefall is constant”
Be careful what you mean here. Velocity or displacement is NOT constant in freefall, only acceleration.
SOME MISCONCEPTIONS
“…drop at the same time”
This statement is unclear. Either say “they hit the ground at the same time”, or “at any one time, they have the same velocity and displacement”
SOME MISCONCEPTIONS
“Everything will fall at the same acceleration”
Avoid sweeping words like “everything”. In actuality, the acceleration is only approximately the same, and only for near the surface of the Earth. Further away from the surface (both above or underground), g will change significantly
SOME MISCONCEPTIONS
“Force / Gravity acting on them is the same”
This is a misconception. The gravitational force acting on Po is larger than the gravitational force acting on Shifu. It is only their acceleration which is the same. We will explore this further in the next topic.
SOME MISCONCEPTIONS
“Mantis is wrong because he has a smaller brain”
Actually, insects (arthropods in general) have extremely complex brains for their size. Their brain complexity arises from twin parallel nerve cords which run through their entire body. (source: wikipedia)
SOME MISCONCEPTIONS
“Tiger is correct because I said so”
Marcarius said this. Please lynch him later for me.
HANDOUTS
Han Do Hwi, Chia Weng Chin, Nathaniel Chan, Ng Rachel, Davis Tan, Low Jing Wen, Marcarius Chia, Lance Lim, Dominic Ko, Jordan Khoo, Chen Wei, Ng Shi Qiang, Isabella Woo, Tommy, Chen Qiang, Chia Kin Mun, Chan Jun Leong, Samuel Chew, Jost Png, Akaash Panday, Justin Koh
HALF TIMEDropping Hammer and Feather on the Moon
http://www.youtube.com/watch?v=5C5_dOEyAfk
There are conspiracy theorists who believed that the Moon Landing was just cold war propaganda. This video is often cited as evidence that the Moon Landing was not a hoax.
PREVIOUSLY
You have filled out the exit card in the previous lesson
All of you have indicated what you would like to know more about. Some of these will be covered in future lessons
The rest will be covered in the following slides.
To assist us to answer your questions, we have requested the assistance of one most wise….
MASTER OOGWAY REPLIES TO QUESTIONS FROM 3E
Did you know that “KAMEHAMEHA” means
“THE WAVE OF DESTRUCTION FROM
THE TURTLE”
YOU HAVE ASKED…I would like to
know more about Galileo’s Discovery
Before Galileo, it was previously believed that
heavier objects fall faster (from Aristotle). Legend has it that Galileo dropped two balls of
different mass from the Leaning Tower of Pisa which
landed at the same time, proving Aristotle wrong.
However, many historians now believe that Galileo never actually performed this
experiment. (source: wikipedia)
YOU HAVE ASKED…
Why Mr Wong keep giving us
cartoons?
“My method is to take the utmost
trouble to find the right thing to say,
and then say it with the utmost levity” – George Bernard Shaw
YOU HAVE ASKED…Why 10ms-2 is
used for O levels while 9.81ms-2 is used for A levels?
Because Cambridge thinks you
can’t handle the truth.
YOU HAVE ASKED…
Qn: What is the g on the moon?
Ans: one-sixth that of Earth
Why is acceleration of
free fall constant?
It has something to do with the
fact that it is the same one Earth
exerting gravitational
force. You will learn more in A
Levels.
YOU HAVE ASKED…Why does Mr
Wong use Kung Fu Panda
characters
Even the dragon
warrior stood atop the
shoulders of giants
YOU HAVE ASKED…Why about
velocity and acceleration upon
hitting the ground?
For a few milliseconds, the
object would undergo sudden
and sharp deceleration (i.e.
negative acceleration).
YOU HAVE ASKED…
I would like to know more about Morgan Freeman
Youtube “How God Of War Should Have Ended” and satisfy your curiosity.
YOU HAVE ASKED…I want to learn more Physics! Cheesy! Fail
Cheese. [Diagram of Cheese]
Might you need some medication, Macarius?
YOU HAVE ASKED…I would like to
know more about EVERYTHING /
ALL OF IT
Child. Seek not knowledge for
knowledge’s sake, but for improving the lives of those around you. Also,
YOLO!!
YOU HAVE ASKED…Does Mr Wong prefer Harry
Potter to Kung Fu Panda?
Too much hair in hairy
potter’s clay, brittle china
make.
YOU HAVE ASKED
I would like to learn more about Kung Fu Panda
If Akaash displays
tremendous skill when fighting
his classmates, then we will
obtain Kung Fu Panday