Got Albert Einstein's book The Theory of Relativity.  He says a lot of things about gravity.  One thing he said is that he once saw someone slipping and falling down.  Now most of us wouldn't think twice about this.  Albert Einstein, however, took a common place event and discovered a mystery of the Universe.  He was like that.  He saw somthing that this falling was the complete absence of the effects of gravity!

      Now you will probably cringe at this.  You'd say, "That's stupid!  Falling down is EVIDENCE of gravity."   Okay.  You might say that.  But to the person who is falling, while he is falling, he is not feeling the force of gravity on him.  If you were in space, a good distance off, and fell toward Earth, you would't feel it.  This is what Einstein said was the absence of gravity, even though "gravity' hurled you ever faster toward the Earth.  You see, gravity just isn't what you think it is.  It defies your common definition and goes beyond what is commonly  believed.

      I suggest that if you want to understand gravity, get Einstein's book or research it on the Internet.  You'll find out it is a warping of time and space (timespace) and that the warping of time has as much to do with gravity as the warping of space.  It also will show that when you feel the acceleration when you are in a moving vehicle, that this feeling is exaxtly the same as gravity.  He calls it the "equivilancy priciple" and whatever you can measure this force to be is exactly what gravity would show.  There is no difference in Einstein's mind. 

The feeling of acceleration (the increase or decrease of your momentum) equals gravity in all respects.

      So let us grow to a better understanding of what is around us.  Let us understand that our teachers in school often give the wrong ideas and keeps us blind.

      Another thought.  Did you know the centrifiugal force doesn't exist?  No.  It doesn't.  It shouldn't even be in the science books.  All you see with "centrifugal force" is the propensity of an object in motion trying to go in a straight line but is forced to constantly change direction.

      You see?  We often look at the world in a weird way based upon false ideas and assumptions that we were taught since  birth.

       Did you know the the geometry you learned in school is hogwash?  Read Einstein's first chapter in the book mentioned above.  He enjoys tearing geometry to shreds.  No.  Not one single thing is true about Euclidian geometry (which we learn in high school.)  No. There are no straight lines.  No.  There is no consistent thing in the Universe where the volume of a circle is Pi * Radius squared.  No.  The circumfrence of a circle is not, usually, 2 pi r.    It might beasure that when you are moving with a circle and measure it while you are in that specific state, but once the circle starts to spin (like the equator of the Earth) or when a space craft circles the Earth, moving along that circle, then the measurements have to change.  If the effects of motion and an opposite effect of deminished gravity were not taken into consideration then global positioning satellites would not make anything near an accurate measurement.

        Let's live in the 21st century leaving behind old, incorrect ideas.  Sure you can use geometry for practical things in every day measurements.  It's good for that.  Just know that math is extremely accurate and is considered to be either true or false.  1 plus 1 must always equal two in every case.  It can't be shorted.  It must equal exactly two.  Even so the value of pi is extremely accurate in that its exactness exceeds even a trillion decimal points (it is an irrational number with no repeating pattern in its series of numbers after the decimal point).  It is either so or not so.  Well it isn't always so in every case so it is a tool used for approcimation only and only under most circumstances.  So it is a valuable equation but can't be used all the time in the space age.

      Oh,  by the way.  1 + 1 doesn't always equal 2.  No.  You have to use what is called the "Lorenze Transformations" to calculate 1 plus 1.  Let us say that you are on a train going 1 mile per hour.  You then walk in the direction of the train's motioin, toward the front of the train, at 1 mile per hour.  Are you now travelling at 2 miles per hour in the direction of the train?  NO.  1 + 1 doesn't equal 2.  You are going slightly less.  As you travel excdeedingly fast, like near the speed of light, this difference grows larger and larger until it becomes nearly infinite.  The faster you go the greater the dimension of space in front of you collapses - gets smaller - which is the definition of space-time warping mentioned above which is why motion mimics gravity when you are accelerating.  Gravity also warps time and space with the same effect so that time flows at a different speed as you measure it close to the Earth or away from Earth even when the object is not moving in relation to the Earth.

      Read Einstein's book.  You'll be amazed at all the things you got wrong and how your teachers in school are the ones who misled you, not having even read Einstein's works.