I hated physics my whole life and here I am enjoying each and everyone of your videos! Not only they are informative but also they are so entertaining. Thank you for such a great contribution for students like me. Cheers man! You are the best teacher ever :D
@@FlippingPhysics WHY E=MC2 IS NECESSARILY F=MA (ON BALANCE), AS ELECTROMAGNETISM/energy is gravity AS SPACE ON BALANCE: TIME DILATION ULTIMATELY proves ON BALANCE that E=MC2 IS F=ma, as ELECTROMAGNETISM/energy is gravity. The stars AND PLANETS are POINTS in the night sky. TIME is NECESSARILY possible/potential AND actual IN BALANCE, AS E=mc2 IS F=ma; AS ELECTROMAGNETISM/energy is gravity. Hence, the Earth AND the Sun are CLEARLY E=MC2 AND F=ma IN BALANCE. (The sky is blue, AND the Earth is ALSO BLUE.) A PHOTON may be placed at the center of WHAT IS THE SUN (as A POINT, of course), AS the reduction of SPACE is offset by (or BALANCED with) the speed of light (c); AS E=MC2 IS F=MA !!!; AS ELECTROMAGNETISM/ENERGY IS GRAVITY. Gravity IS ELECTROMAGNETISM/energy. BALANCE and completeness go hand in hand. It ALL CLEARLY makes perfect sense. GRAVITATIONAL force/ENERGY IS proportional to (or BALANCED with/as) inertia/INERTIAL RESISTANCE, AS E=MC2 IS F=ma; AS ELECTROMAGNETISM/ENERGY IS GRAVITY. ("Mass"/ENERGY IS GRAVITY. ELECTROMAGNETISM/energy is gravity !!!) Gravity/acceleration involves BALANCED inertia/INERTIAL RESISTANCE, AS E=mC2 IS F=ma IN BALANCE !!!; AS ELECTROMAGNETISM/energy is gravity. (Energy has/involves GRAVITY, AND ENERGY has/involves inertia/INERTIAL RESISTANCE.) E=mC2 IS F=ma. This NECESSARILY represents, INVOLVES, AND DESCRIBES what is possible/potential AND actual IN BALANCE, AS ELECTROMAGNETISM/energy is gravity. Gravity IS ELECTROMAGNETISM/energy. Great !!! Again, BALANCE AND completeness go hand in hand. It ALL CLEARLY makes perfect sense. By Frank DiMeglio
@@FlippingPhysics WHERE EINSTEIN WENT WRONG REGARDING WHAT IS BALANCED BODILY/VISUAL EXPERIENCE, AS ELECTROMAGNETISM/energy is gravity: Boris Stoyanov is a super bright and an HONEST physicist. He has agreed that the following paragraph (and I quote) is "crystal clear": "ELECTROMAGNETISM/energy is gravity. This is proven by F=ma AND E=mc2. Accordingly, gravity/acceleration involves balanced inertia/inertial resistance; as ELECTROMAGNETISM/energy is gravity. "Mass"/energy involves balanced inertia/inertial resistance consistent with/as what is balanced ELECTROMAGNETIC/GRAVITATIONAL force/energy, as electromagnetism/energy is gravity. Gravity IS electromagnetism/energy. That objects fall at the same rate (neglecting air resistance, of course) PROVES that ELECTROMAGNETISM/energy is gravity. Think about it." Get a good look at the BLUE SKY. Get a good look at what is THE EYE. Consider THE MAN who is standing on what is THE EARTH/ground. Touch AND feeling BLEND, AS ELECTROMAGNETISM/energy is gravity. Balanced BODILY/VISUAL EXPERIENCE is the reason that objects AND MEN fall at the SAME RATE (neglecting air resistance, of course), AS E=MC2 IS F=ma; AS ELECTROMAGNETISM/energy is gravity. Gravity/acceleration involves BALANCED inertia/INERTIAL RESISTANCE, AS E=MC2 IS F=ma; AS ELECTROMAGNETISM/energy is gravity. (Accordingly, the rotation of WHAT IS THE MOON matches it's revolution.) "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. Gravity IS ELECTROMAGNETISM/energy !!! E=MC2 IS F=ma. This NECESSARILY represents, INVOLVES, AND DESCRIBES what is possible/potential AND actual IN BALANCE, AS ELECTROMAGNETISM/energy is gravity !!!!!!! It all CLEARLY makes perfect sense, AS BALANCE AND completeness go hand in hand !!! Think QUANTUM GRAVITY !!!!!!!!!!! By Frank DiMeglio
Divneet k, the acceleration due to gravity is always directed down towards the center of the planet. We usually define up as positive and down as negative, therefore the acceleration due to gravity is negative because it is always down, regardless of the direction the object is moving.
you rock! please keep uploading more,you`re one of the best teachers . i wanted to clarify if my understanding is right , so yeah acceleration due to gravity will be positive if the ball is thrown downwards as it is in the direction of acceleration due to gravity and it`ll be negative if the ball is thrown upwards as its against the force of gravity right? but then i saw your videos and its the opposite. i got really confused.
at 6:35 mr p asks a question from bo so why did he said only 9.81 not -9.81.I am confused in where we use negative sign and where we use positive with 9.81 please someone help?
I absolutely love all of the effort you put into these videos. Your explanations (and teaching) is better than my college professor. You're getting me through college physics.
you deserve a million subscribers. Your videos are absolutely amazing, enjoyable and informative. I wish our professors are as passionate as you are in teaching us. :)
I actually do not say "if [g is] negative then it [is] falling down". Please watch my "Common Free Fall Pitfalls" video. I think it will help you tremendously. www.flippingphysics.com/common-free-fall-pitfalls.html
does anyone know where i can practice for the questions because my teacher is kind of annoying, what he does is give us 12 minutes to do 6 questions and I haven't take chemistry or physics so I'm struggling, I always run out of time and have been getting 3/6 for the quiz.
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.
Mr. P if a falling body were to be given an initial downward push instead of just being released, would the resulting value of g be different? it would be higher, right? Due to the extra acceleration?
Hi i am studying for ap physixs exam in 2020 and I am using your videos to study. I see there are a lot of videos in this playlist. Which are the key videos that I should watch and review for the content in this ap physics exam? Thank you, these videos are so helpful
Depends on what you define as the positive direction. If +y is defined as up, then it is -9.8m/s^2. If +y is defined as down, then it is -9.8 m/s^2. Whenever a g appears as a term in an equation, it refers to g being positive, unless otherwise specified.
Is air resistance a similar concept to normal force in floors/grounds, just in the air? Also, does air resistance have different magnitude depending on where you are in the world, or even in outer space? I know that there are particles in the air that basically create the resistance in "air resistance". Would wind or other weather conditions change air resistance?
Also...If there was no normal force when we put a book on the table or even when we stand on the ground, what would happen? Would the book just continue to push through the table and eventually destroy itself, and would we, as humans continue to fall into the ground and die as we would be smushed to the ground? I guess what I'm trying to understand is, where does normal force come from? Does normal force exist simply b/c there is a surface? Or does normal force only exist when an object that has gravity acting upon it is placed on top of a surface, like the person standing on the ground.
aquagem baby Okay, there are a lot of questions in here and I will do my best to answer them. 1) No, Air Resistance is not similar to the Normal Force. Air Resistance (also called Drag Force) is proportional to the square of the velocity of the moving object, which makes it very tricky to work with. The Normal Force does NOT depend on the velocity of the object. If you want to know more about the Drag Force and how to work with it, I have a video "A Brief Look at the Force of Drag". www.flippingphysics.com/the-euler-method.html [Technically Drag Force is usually proportional to the square of the velocity, sometimes it is proportional to just the velocity (not squared).] 2) There is no Air Resistance in outer space because there is no air. 3) Yes, wind and other weather conditions will change air resistance. (see video referenced in #1) 4) If a book is on a table and there is no normal force, that means there is no table. Book on table => Normal Force Exists. Book not on a surface => No Normal Force. If you remove the table from under a book, the Normal Force goes away and the only force acting on the book is the Force of Gravity and therefore the book would be in Free Fall. 5) The normal force occurs because two material objects can't occupy the same space in the same time. When the book is on the table, the force of gravity is pulling the book down toward the table. The table is getting in the way of the book and is therefore pushing up on the book with a Force Normal. 6) "Does the normal force only exist when an object that has gravity acting upon it is placed on top of a surface, like the person standing on the ground[?]" I don't like the word "only" in this sentence. If you replace it with "usually", then the sentence would be correct. Why "usually"? You could be in a space station and still have a force normal if the space station is rotating and the force normal would be caused by the inertia of your body trying to keep your body moving in a straight line and the space station continually getting in the way and forcing you in toward the center of the circle, therefore causing a net force in the in direction (or centripetal force) which would then cause a Normal Force. Yeah, I don't like the word "only".
I’m still a little confused? Here’s a question from my book. A steel ball is dropped from a dividing platform with an individual velocity of zero. Using the approximate value of 10 m/s^2. What is the velocity of the ball 0.7 seconds after its release? I don’t understand what to do.
@UCyE0S9Q_I8_3F4Zka0n8adA I wish I knew you before. I had to perform the pass/fail option otherwise it would have affected my GPA. But thanks for answering my question. Have a great day!
Hint 1: what is the definition of acceleration? When acceleration is constant, what does this imply for how velocity changes after a given time duration? Hint 2: g is called the acceleration of gravity, why might that be?
Anik Talukder An object in free fall might or might not have an initial velocity, it totally depends on the situation. Sorry, I know it's not a definitive answer, however, it's the truth. :)
Thanks, So a force applied on an object, to make it drop and thus freefall Compared to an object at initial rest then drops and freefalls Yeah, it does depend on the situation thanks
I have two degrees from the University of Michigan in the United States. Bachelors of Science in Mechanical Engineering and Master in Education. How about you?
I'm yet to enter an university!! I'm planning to opt for ECE. I'm from India sir! I fell in love with your videos long back.I'm a guy like Bo.... Thank you for your wonderful videos sir. I owe you a lot
I have subscribed to your channel for 4 years till now.... You make great videos... But I would really appreciate if you could emphasize, in some videos on the syllabus and topics in GCE o levels physics.
I like this video a lot, but as a physics teacher, I don't like to say whether the acceleration due to gravity is positive or negative. The acceleration due to gravity is 9.81 m/s^2 directed downwards towards the center of the Earth. Saying it is positive or negative is a frame of reference. The object will speed up at this rate, but whether it is positive or negative is your choice of vector/direction. When you throw an object up, you are slowing down upward. When the object comes back down you are speeding up downward. What's positive, up or down? That's up to you.
Thanks and you are welcome. I feel the following video also clarifies my thoughts on this. It does require students to be understand dynamics, not just kinematics. www.flippingphysics.com/g-is-positive.html
Well, a flying plane ✈️ is not touching anything. Is this technically considered a case of a free fall? I will try not to think about that next time I sit in a plane.
No, an ordinary flying plane is not considered in free fall. "Not touching anything" is an oversimplified way to establish this condition. Another example would be magnetic levitation, which is not in free fall, albeit also not in contact with anything. A flying plane is touching the air in numerous ways, for the forces of thrust, lift and drag, which cause it to not be in free fall. There are zero-g flights you can take, where the plane is temporarily in free fall, as it simulates 30 seconds of weightlessness.
I normally define free fall as follow: Objects of different masses will all fall with the same acceleration (9.81 m.s−2) provided there no other forces acting on them except their weight.I always tell my students that when working in two different y directions, g as a vector quantity is always negative according to the x-y framework and its modulus is 9.81 m.s−2
That is a fine definition of free fall. My students have not learned about forces when we learn about free fall, therefore, we cannot define free fall in terms of forces yet.
I hated physics my whole life and here I am enjoying each and everyone of your videos! Not only they are informative but also they are so entertaining. Thank you for such a great contribution for students like me. Cheers man! You are the best teacher ever :D
That's awesome. Thanks for the lovely comment.
@@FlippingPhysics WHY E=MC2 IS NECESSARILY F=MA (ON BALANCE), AS ELECTROMAGNETISM/energy is gravity AS SPACE ON BALANCE:
TIME DILATION ULTIMATELY proves ON BALANCE that E=MC2 IS F=ma, as ELECTROMAGNETISM/energy is gravity. The stars AND PLANETS are POINTS in the night sky. TIME is NECESSARILY possible/potential AND actual IN BALANCE, AS E=mc2 IS F=ma; AS ELECTROMAGNETISM/energy is gravity. Hence, the Earth AND the Sun are CLEARLY E=MC2 AND F=ma IN BALANCE. (The sky is blue, AND the Earth is ALSO BLUE.) A PHOTON may be placed at the center of WHAT IS THE SUN (as A POINT, of course), AS the reduction of SPACE is offset by (or BALANCED with) the speed of light (c); AS E=MC2 IS F=MA !!!; AS ELECTROMAGNETISM/ENERGY IS GRAVITY. Gravity IS ELECTROMAGNETISM/energy. BALANCE and completeness go hand in hand. It ALL CLEARLY makes perfect sense. GRAVITATIONAL force/ENERGY IS proportional to (or BALANCED with/as) inertia/INERTIAL RESISTANCE, AS E=MC2 IS F=ma; AS ELECTROMAGNETISM/ENERGY IS GRAVITY. ("Mass"/ENERGY IS GRAVITY. ELECTROMAGNETISM/energy is gravity !!!) Gravity/acceleration involves BALANCED inertia/INERTIAL RESISTANCE, AS E=mC2 IS F=ma IN BALANCE !!!; AS ELECTROMAGNETISM/energy is gravity. (Energy has/involves GRAVITY, AND ENERGY has/involves inertia/INERTIAL RESISTANCE.) E=mC2 IS F=ma. This NECESSARILY represents, INVOLVES, AND DESCRIBES what is possible/potential AND actual IN BALANCE, AS ELECTROMAGNETISM/energy is gravity. Gravity IS ELECTROMAGNETISM/energy. Great !!! Again, BALANCE AND completeness go hand in hand. It ALL CLEARLY makes perfect sense.
By Frank DiMeglio
@@FlippingPhysics WHERE EINSTEIN WENT WRONG REGARDING WHAT IS BALANCED BODILY/VISUAL EXPERIENCE, AS ELECTROMAGNETISM/energy is gravity:
Boris Stoyanov is a super bright and an HONEST physicist. He has agreed that the following paragraph (and I quote) is "crystal clear":
"ELECTROMAGNETISM/energy is gravity. This is proven by F=ma AND E=mc2. Accordingly, gravity/acceleration involves balanced inertia/inertial resistance; as ELECTROMAGNETISM/energy is gravity. "Mass"/energy involves balanced inertia/inertial resistance consistent with/as what is balanced ELECTROMAGNETIC/GRAVITATIONAL force/energy, as electromagnetism/energy is gravity. Gravity IS electromagnetism/energy. That objects fall at the same rate (neglecting air resistance, of course) PROVES that ELECTROMAGNETISM/energy is gravity. Think about it."
Get a good look at the BLUE SKY. Get a good look at what is THE EYE. Consider THE MAN who is standing on what is THE EARTH/ground. Touch AND feeling BLEND, AS ELECTROMAGNETISM/energy is gravity. Balanced BODILY/VISUAL EXPERIENCE is the reason that objects AND MEN fall at the SAME RATE (neglecting air resistance, of course), AS E=MC2 IS F=ma; AS ELECTROMAGNETISM/energy is gravity. Gravity/acceleration involves BALANCED inertia/INERTIAL RESISTANCE, AS E=MC2 IS F=ma; AS ELECTROMAGNETISM/energy is gravity. (Accordingly, the rotation of WHAT IS THE MOON matches it's revolution.) "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. Gravity IS ELECTROMAGNETISM/energy !!!
E=MC2 IS F=ma. This NECESSARILY represents, INVOLVES, AND DESCRIBES what is possible/potential AND actual IN BALANCE, AS ELECTROMAGNETISM/energy is gravity !!!!!!! It all CLEARLY makes perfect sense, AS BALANCE AND completeness go hand in hand !!! Think QUANTUM GRAVITY !!!!!!!!!!!
By Frank DiMeglio
the best short and concise physics tutorial in the universe.
wow, thanks.
YOU ARE AMAZING AT EXPLAINING THINGS IN A VERY SIMPLE AND CLEAR MANNER!!!
Your videos are GREAT! Concise, with very good explanation of the concepts, engaging and funny. Thank you so much.
What a lovely compliment. Thank you!
Divneet k, the acceleration due to gravity is always directed down towards the center of the planet. We usually define up as positive and down as negative, therefore the acceleration due to gravity is negative because it is always down, regardless of the direction the object is moving.
you rock! please keep uploading more,you`re one of the best teachers . i wanted to clarify if my understanding is right , so yeah acceleration due to gravity will be positive if the ball is thrown downwards as it is in the direction of acceleration due to gravity and it`ll be negative if the ball is thrown upwards as its against the force of gravity right? but then i saw your videos and its the opposite. i got really confused.
Wow! These videos are amazing in science Class and I have such a great time watching all of you educational videos!!
That's awesome! Thanks.
Thank you for clarifying the constant "g."
at 6:35 mr p asks a question from bo so why did he said only 9.81 not -9.81.I am confused in where we use negative sign and where we use positive with 9.81 please someone help?
ok i got it mr p
wow you are a great teacher with lots of enthusiasm. thanks
Thanks!
Thank you so much for all the effort of making these videos easy to understand and funny! I wish I have class with billy, bobby and bo!
Maybe someday you will!
i wish i knew this existed before i took the quizzes, now im taking my exams tomorrow. THIS IS AWESOME! I'M FINALLY LEARNING THINGS!
I am so glad you are finding my videos helpful. Please share so others can find them sooner than you did. 😀
wish I had a teacher like you
Can someone explain why its positie 9.81 on earth but negative 9.81 in the y direction?
Just came here to thank you🙏 for these awesome videos...they are so helpful and fun to watch..😊😊
You are absolutely welcome. Thank you for your lovely comment. 👍
I absolutely love all of the effort you put into these videos. Your explanations (and teaching) is better than my college professor. You're getting me through college physics.
This makes me happy and sad simultaneously.
This helped me so much! you're teaching style is the best I've seen! keep up the good work
Any chance you could help me out by doing what I ask people to do in this video? bit.ly/2y4tOCA It would be a great way to show your appreciation!
Thank you so much, that really helped ! And it was fun to watch as well...
you deserve a million subscribers. Your videos are absolutely amazing, enjoyable and informative. I wish our professors are as passionate as you are in teaching us. :)
One million subscribers. Someday? That would be lovely. Glad you are learning.
This video is great!
I learned a lot from this..
:)
Glad I was able to help you out! 👍
so you explain in 7:53, that if its a negative then its falling down? But if its going up then would it be a positive number ?
I actually do not say "if [g is] negative then it [is] falling down". Please watch my "Common Free Fall Pitfalls" video. I think it will help you tremendously. www.flippingphysics.com/common-free-fall-pitfalls.html
okay thank you
does anyone know where i can practice for the questions because my teacher is kind of annoying, what he does is give us 12 minutes to do 6 questions and I haven't take chemistry or physics so I'm struggling, I always run out of time and have been getting 3/6 for the quiz.
My school just started 2 weeks ago and I have my test next week
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.
thanks for the full captioning :)
You're welcome!
Mr. P if a falling body were to be given an initial downward push instead of just being released, would the resulting value of g be different? it would be higher, right? Due to the extra acceleration?
+bronzedflames Nope. This is a common misconception which explain here: ruclips.net/video/GDUdUumkv0o/видео.htmlm45s
Hi i am studying for ap physixs exam in 2020 and I am using your videos to study. I see there are a lot of videos in this playlist. Which are the key videos that I should watch and review for the content in this ap physics exam? Thank you, these videos are so helpful
Man you really helping me rn🖤🖤
you are welcome
So acceleration due to gravity is -9.8m/s/s or is it 9.8m/s/s I'm confused
Depends on what you define as the positive direction. If +y is defined as up, then it is -9.8m/s^2. If +y is defined as down, then it is -9.8 m/s^2. Whenever a g appears as a term in an equation, it refers to g being positive, unless otherwise specified.
Is air resistance a similar concept to normal force in floors/grounds, just in the air? Also, does air resistance have different magnitude depending on where you are in the world, or even in outer space? I know that there are particles in the air that basically create the resistance in "air resistance". Would wind or other weather conditions change air resistance?
Also...If there was no normal force when we put a book on the table or even when we stand on the ground, what would happen? Would the book just continue to push through the table and eventually destroy itself, and would we, as humans continue to fall into the ground and die as we would be smushed to the ground? I guess what I'm trying to understand is, where does normal force come from? Does normal force exist simply b/c there is a surface? Or does normal force only exist when an object that has gravity acting upon it is placed on top of a surface, like the person standing on the ground.
aquagem baby Okay, there are a lot of questions in here and I will do my best to answer them.
1) No, Air Resistance is not similar to the Normal Force. Air Resistance (also called Drag Force) is proportional to the square of the velocity of the moving object, which makes it very tricky to work with. The Normal Force does NOT depend on the velocity of the object. If you want to know more about the Drag Force and how to work with it, I have a video "A Brief Look at the Force of Drag". www.flippingphysics.com/the-euler-method.html [Technically Drag Force is usually proportional to the square of the velocity, sometimes it is proportional to just the velocity (not squared).]
2) There is no Air Resistance in outer space because there is no air.
3) Yes, wind and other weather conditions will change air resistance. (see video referenced in #1)
4) If a book is on a table and there is no normal force, that means there is no table. Book on table => Normal Force Exists. Book not on a surface => No Normal Force. If you remove the table from under a book, the Normal Force goes away and the only force acting on the book is the Force of Gravity and therefore the book would be in Free Fall.
5) The normal force occurs because two material objects can't occupy the same space in the same time. When the book is on the table, the force of gravity is pulling the book down toward the table. The table is getting in the way of the book and is therefore pushing up on the book with a Force Normal.
6) "Does the normal force only exist when an object that has gravity acting upon it is placed on top of a surface, like the person standing on the ground[?]" I don't like the word "only" in this sentence. If you replace it with "usually", then the sentence would be correct. Why "usually"? You could be in a space station and still have a force normal if the space station is rotating and the force normal would be caused by the inertia of your body trying to keep your body moving in a straight line and the space station continually getting in the way and forcing you in toward the center of the circle, therefore causing a net force in the in direction (or centripetal force) which would then cause a Normal Force. Yeah, I don't like the word "only".
Thank you!! So can you consider the floor/ground to be a normal force as well?
The floor/ground cause a normal force, yes.
I’m still a little confused? Here’s a question from my book.
A steel ball is dropped from a dividing platform with an individual velocity of zero. Using the approximate value of 10 m/s^2.
What is the velocity of the ball 0.7 seconds after its release?
I don’t understand what to do.
@UCyE0S9Q_I8_3F4Zka0n8adA I wish I knew you before. I had to perform the pass/fail option otherwise it would have affected my GPA. But thanks for answering my question.
Have a great day!
Hint 1: what is the definition of acceleration? When acceleration is constant, what does this imply for how velocity changes after a given time duration?
Hint 2: g is called the acceleration of gravity, why might that be?
Very Good Explanation Sir. @
Thanks.
Mr P, Does an object in freefall have an initial velocity?
Anik Talukder An object in free fall might or might not have an initial velocity, it totally depends on the situation. Sorry, I know it's not a definitive answer, however, it's the truth. :)
Thanks,
So a force applied on an object, to make it drop and thus freefall
Compared to an object at initial rest then drops and freefalls
Yeah, it does depend on the situation thanks
flipping physics it is really awesome to watch and i really enjoyed the concepts of physics..well ty for making physics interesting...
You are welcome. I do my best to make physics interesting. I am glad you think I am succeeding.
Very Good.
Mr.P, Where did you study? I'm so eager to know about it. You're so inspiring!!
I have two degrees from the University of Michigan in the United States. Bachelors of Science in Mechanical Engineering and Master in Education. How about you?
I'm yet to enter an university!! I'm planning to opt for ECE. I'm from India sir! I fell in love with your videos long back.I'm a guy like Bo.... Thank you for your wonderful videos sir. I owe you a lot
I have subscribed to your channel for 4 years till now.... You make great videos... But I would really appreciate if you could emphasize, in some videos on the syllabus and topics in GCE o levels physics.
There is a lot of overlap between GCE O Levels Physics and the AP Physics 1 curriculum I am working on. However, they are not the same, Sorry.
Flipping Physics
Alright then..😔
Thanks for replying though..✌🏻
I hope your videos will help me in my A levels. 🙂
Excellent videos! Better than Bill Nye no lie
Thanks. Love Bill Nye.
I like this video a lot, but as a physics teacher, I don't like to say whether the acceleration due to gravity is positive or negative. The acceleration due to gravity is 9.81 m/s^2 directed downwards towards the center of the Earth. Saying it is positive or negative is a frame of reference. The object will speed up at this rate, but whether it is positive or negative is your choice of vector/direction. When you throw an object up, you are slowing down upward. When the object comes back down you are speeding up downward. What's positive, up or down? That's up to you.
Thank you for clarifying this in the Pitfalls Video!
Thanks and you are welcome. I feel the following video also clarifies my thoughts on this. It does require students to be understand dynamics, not just kinematics. www.flippingphysics.com/g-is-positive.html
Well, a flying plane ✈️ is not touching anything. Is this technically considered a case of a free fall? I will try not to think about that next time I sit in a plane.
No, an ordinary flying plane is not considered in free fall. "Not touching anything" is an oversimplified way to establish this condition. Another example would be magnetic levitation, which is not in free fall, albeit also not in contact with anything.
A flying plane is touching the air in numerous ways, for the forces of thrust, lift and drag, which cause it to not be in free fall. There are zero-g flights you can take, where the plane is temporarily in free fall, as it simulates 30 seconds of weightlessness.
thank you
You are welcome.
I normally define free fall as follow: Objects of different masses will all fall with the same acceleration (9.81 m.s−2) provided there no other forces acting on them except their weight.I always tell my students that when working in two different y directions, g as a vector quantity is always negative according to the x-y framework and its modulus is 9.81 m.s−2
That is a fine definition of free fall. My students have not learned about forces when we learn about free fall, therefore, we cannot define free fall in terms of forces yet.
8:00
LOL at how you just interrupted your own video.
fliping physics
Wacthing this for science class i h8 my life i wish i had cheat codes.
+Angel Laser The sooner you realize life does not have cheat codes, the better off you will be.
:)
:D
Fortnight
too repetitive, learn to summarize