What Is Free Fall? | Physics in Motion
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- Опубликовано: 3 фев 2019
- We head to a football stadium to explain freefall as we work through an example problem finding the maximum height of a thrown object.
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Great video! Concise and to the point, with excellent illustrations of the concepts. I will use it to help my HS students study these concepts.
Absolutely wonderful explanation of the concept!!!!
As a physics teacher and adjunct professor for the past 15 years, I have to give the PiM team credit for producing an absolutely wonderful set of physics lessons that clearly deliver concepts and problems solving strategies to first time physics students. Thank you people of Georgia Public Television, for your vision to give PiM the green light especially at a time when remote or hybrid learning has become mainstreamed.
This was SO useful! Thank you!!
Amazing explain sir ... understood 👍👍
The proper defn helped me in my exam..thank you so much
Thanku very much... Cleared my doubts very easily and got some extra knowledge to add with!!
You are a legend practical sir
Salute to you man ❤️
POV: you watched this in class
I watched this in preparation for class
@@physicsnerd18 only for class ? Dang who knows , this might be useful for your livelihood later.
@@kiminoomaewamoushindeiru.7323 What do u mean? Are you suggesting I become a physicist? Is that a compliment?
I hate weebs
POGGERS
Thx this was rly helpful
Very helpful love it :D
Thank you soo much!
Can you give me link of youtube that explain air resistance in free fall motion? Thank you
This is very helpful.
Excellent video, very good illustration and examples!
lovely explanation
It is very useful ☺️ ( no words to say 👏👏👏👏👏👏👏👏👏👏)
Thank you very much sir
GREAT VIDEO
Thank so much sir I want be connected with you
Thank you so much sir ........ your video helped me so much in my exams 😊😊
wow! I learned a lot
Nyc video
thanks a lot:)
Thank you
I find practicalli visual examples very helpful ...tt way i am fulli convinced tt thre was no sci-fi. .lol #thanx
Just a quick tip!
Why is a ball thrown upwards considered free falling even though our hand exerted a force upon it?
When you let go of the ball, you are not exerting a force upon it anymore. The velocity of the ball would stay the same and continue to space if there were no forces acting upon it (inc gravity). The velocity of the ball changes because gravity becomes the sole force acting upon it and the ball is now free falling. The ball does not 'carry the force' or anything. The ball has a positive (non zero) velocity at first when it is moving upwards due to the force that had been on the ball but there is no force acting on the ball anymore.
Correct. This exact same concept applies to something like the Apollo missions on their way to the moon. The launch puts them into orbit - at which point they are in free fall, but in orbit. Then they fire the rocket again to put them on a trajectory that will intercept the moon. This increases their velocity up to around 10,300 m/s - in essence, they are "thrown" to the moon at 10.3 km/s. Then the rockets are turned off, and they free fall all the way to the moon, but slow down the entire time. By the time they reach the moon, they are only going a few thousand m/s. They are literally thrown just high enough to reach the moon before falling back down - at which point they perform another maneuver to enter lunar orbit. The return trip is the same - except they only need enough fuel to escape the moon and they literally fall all the way back to Earth - this time speeding up the whole time and then braking using the Earth's atmosphere and then parachutes. Other than small course corrections along the return trip, they use no fuel on the way back which explains the difference in the fuel needed to launch from Earth - and what they used to get back. A little more information here than was relevant, but anyway.
@@willoughbykrenzteinburg Whoa super interesting, thank you!
thank you so much for this explanation!
sir please answer how much gravitatioal field strength act on watermelons
Thank u
You said that gravity is the only force the ball was under on the way up. What about the force you gave it when you threw it up into the air?
It wasn't in free fall until the ball is released.
A ball is thrown straight up in the air: At the peak of its ascent, what is it doing? would it be falling down or instantaneously at rest??
It is accelerating downward as it has been doing on its ascent and will be doing for its descent. It will indeed be instantaneously at rest. In other words, its velocity equals zero for a moment. It's acceleration is ~9.8 meters per second squared throughout its journey. So, from the perspective of acceleration, it is falling down the entire time.
Thankyou😊
بسلم عليك تنسيق الفيزيا
Wait so you are saying, If I were to drop an anvil and a feather at the same time, let's say were were on top of a 50 foot building. They would land at the same time?
Nevermind, I realized a feather would have air resistance.
The anvil would have air resistance too. In fact, there would be considerably more air resistance on the anvil, but since the anvil is so massive, that force of drag would have a far smaller impact on the anvil than the smaller drag force has on the much less massive feather.
@@willoughbykrenzteinburg oh ok thx
@@willoughbykrenzteinburg THE THEORETICAL, CLEAR, AND BALANCED MATHEMATICAL PROOF OF THE FACT THAT E=MC2 IS F=MA OF NECESSITY:
E=mc2 IS F=ma. Gravity IS ELECTROMAGNETISM/energy. ELECTROMAGNETISM/energy is gravity. "Mass"/ENERGY IS GRAVITY. E=MC2 IS F=ma. This NECESSARILY represents, INVOLVES, AND DESCRIBES what is possible/potential AND actual IN BALANCE, AS gravity IS ELECTROMAGNETISM/energy! Gravity/acceleration involves BALANCED inertia/INERTIAL RESISTANCE, AS E=MC2 IS F=ma ON BALANCE; AS ELECTROMAGNETISM/ENERGY IS GRAVITY. "Mass"/ENERGY involves BALANCED inertia/INERTIAL RESISTANCE consistent WITH/AS what is BALANCED electromagnetic/gravitational force/ENERGY, AS E=MC2 IS F=ma; AS ELECTROMAGNETISM/energy is gravity !!! It all CLEARLY makes perfect sense. Carefully consider what is THE MAN who IS standing on what is THE EARTH/ground. Touch AND feeling BLEND, AS ELECTROMAGNETISM/energy is gravity; AS E=MC2 IS F=MA ON BALANCE !!! (Energy has/involves GRAVITY, AND ENERGY has/involves inertia/INERTIAL RESISTANCE.) Objects fall at the SAME RATE (neglecting air resistance, of course), AS ELECTROMAGNETISM/energy is gravity; AS E=MC2 IS F=MA ON BALANCE !!! ACCORDINGLY, the rotation of WHAT IS THE MOON matches it's revolution. The stars AND PLANETS are POINTS in the night sky. The sky is blue, AND THE EARTH is ALSO BLUE !!! Carefully consider what is THE EYE. GREAT. GRAVITATIONAL force/ENERGY IS proportional to (or BALANCED with/as) inertia/INERTIAL RESISTANCE, AS E=MC2 IS F=ma IN BALANCE; AS ELECTROMAGNETISM/energy is gravity. TIME is NECESSARILY possible/potential AND actual IN BALANCE, AS E=MC2 IS F=ma IN BALANCE; AS ELECTROMAGNETISM/energy is gravity. Gravity IS ELECTROMAGNETISM/energy. BALANCE AND completeness go hand in hand. TIME DILATION ultimately proves ON BALANCE that E=mc2 IS F=ma, AS ELECTROMAGNETISM/energy is gravity. Again, gravity IS ELECTROMAGNETISM/energy. E=MC2 IS F=ma IN BALANCE !!! Think QUANTUM GRAVITY !!!
By Frank DiMeglio
@@frankdimeglio8216 This is a convoluted mess, nonsense, and entirely irrelevant to the point of discussion.
wow
Nmms bro
I love you
constant acceleration and downward movement = free fall
How about the watermelon and a baloon?
Kimi sar 2 mark vatil
Nice :)
:(
Let's freefall
How could a ball throwing up be only under gravity...How could a bullet firing upward be in free fall state? Its a misconception!!
uh sir, you're kinda attractive ngl
Trickster
Not first
Galileo was such a smarty
Nah you trippin
Please solve the unknown FIRST then put the numbers in. THIS IS SCHLOCK work. Please solve for algorithms!
Note: No fruits were harmed in the production of this video
Halp me sar palij
ide gas
bruh
Freefall is what an object does when it is under the influence of only one force, gravity
Thank you