The Acceleration of Gravity and Free-Fall Equations

[@OliyadBekele-u7h]

You sir have to to be the greatest teacher that came after Richard feynman. I went through highschool and now college by the help of your videos thank you.

[@MathAndScience]

This is probably one of the highest compliments anyone can give me, he’s one of my heroes!

[@davidmudry5622]

@@MathAndScience Gravity is not a force, it's space-time and the downward acceleration is an illusion because you are not an inertial observer. Please teach true physics. Newton said the masses cancel out to zero in free fall, Einstein said the weights cancel out to zero in free fall. F = ma therefore in free fall F = zero.

[@tresajessygeorge210]

THANK YOU... SIR...!!! I have to review this lecture again to be memorized...!!!

[@drumtwo4seven]

Nice 👍

[@AerialPhotogGuy]

Thank you!

[@davidmudry5622]

kzbin.info/www/bejne/oajPaqR3m6x7rbc -NASA DEMONSTRATES GRAVITY AS TWIRLING A YO-YO ON A STRING THAT IS PULLING DOWN ON FALLING OBJECTS. A YO-YO ON A STRING CAN TWIRL AROUND AT DIFFERENT RPMs. OBJECTS IN ORBIT CAN'T DO THAT. THE MOON, OR AN EGG AT THE SAME DISTANCE FROM EARTH AS THE MOON, CAN ONLY TRAVEL AT ONE SPEED TO MAINTAIN ORBIT EVEN THOUGH THEIR MASSES ARE A BIT UNEQUAL TO EACH OTHER...GRAVITY IS NOT A STRING. A STRING IS A PHYSICAL SOLID MATERIAL CONNECTING A MOTOR TO THE YO-YO, A TRANSMISSION FOR THE APPLIED FORCE...GRAVITY IS EMPTY SPACE, NON-PHYSICAL, A FICTITIOUS CONNECTION, EMPTY SPACE CANNOT TRANSMIT A PHYSICAL FORCE...IN FACT GRAVITY HAS BEEN A MYTHICAL FORCE EVER SINCE 1915. myth /miTH/ noun 1. a traditional story, especially one concerning the early history of a people or explaining some natural phenomenon. 2. a widely held but false belief or idea.

[@BMW.E38]

awesoooooooooooooooome

[@hijadela_BuenaMai7941]

Thanks!

[@MathAndScience]

Wow thank you so much! Many thanks!

[@davidmudry5622]

@@MathAndScience kzbin.info/www/bejne/oajPaqR3m6x7rbc -NASA DEMONSTRATES GRAVITY AS TWIRLING A YO-YO ON A STRING THAT IS PULLING DOWN ON FALLING OBJECTS. A YO-YO ON A STRING CAN TWIRL AROUND AT DIFFERENT RPMs. OBJECTS IN ORBIT CAN'T DO THAT. THE MOON, OR AN EGG AT THE SAME DISTANCE FROM EARTH AS THE MOON, CAN ONLY TRAVEL AT ONE SPEED TO MAINTAIN ORBIT EVEN THOUGH THEIR MASSES ARE A BIT UNEQUAL TO EACH OTHER...GRAVITY IS NOT A STRING. A STRING IS A PHYSICAL SOLID MATERIAL CONNECTING A MOTOR TO THE YO-YO, A TRANSMISSION FOR THE APPLIED FORCE...GRAVITY IS EMPTY SPACE, NON-PHYSICAL, A FICTITIOUS CONNECTION, EMPTY SPACE CANNOT TRANSMIT A PHYSICAL FORCE...IN FACT GRAVITY HAS BEEN A MYTHICAL FORCE EVER SINCE 1915. myth /miTH/ noun 1. a traditional story, especially one concerning the early history of a people or explaining some natural phenomenon. 2. a widely held but false belief or idea.

[@hemrajue3434]

Does a falling object always tends to move towards the centre of the earth?

[@WhiteHenny]

No. Falling objects on Mars tend to move towards the center of Mars for instance. There's nothing special about Earth in that regard. Other factors such as wind can change the direction.

[@gide5489]

The falling direction combines gravity, initial velocity and other secondary effects like Coriolis, etc. So the answer is no, never..

[@raylittle8607]

I always thought objects dropped from a height were in free fall and the reason they contact the ground is because the earth comes up to meet that object at 9.8m/s. 2.

[@83jbbentley]

Galileo was so close to many things…

[@hemrajue3434]

I think all objects fall at the same rate in vaccume.

[@gide5489]

It is confusing to call g gravity acceleration since the force mg (the weight) exists even without acceleration. Better to call it gravity intensity.

[@felixcat4346]

I'm confused because I thought that acceleration just leveled off at a certain speed so you couldn't go faster in a certain speed when you're falling to the Earth so why is the curve a parabola

[@gide5489]

It is never a parabola

[@WhiteHenny]

Because for the purposes of this video he is ignoring air resistance. In reality the upwards force due to air resistance increases the faster you fall until it balances the downwards force due to gravity. At that point you have reached terminal velocity and will stop accelerating.