You are not asking me about a feather and a hammer on the moon that? Because your definition to that V2= V1........ has a formula. This formula does not limited to the horizontal or the vertical.

But when you saying you are on the moon. That is Vertical down. 

Does that happen on Earth too?

https://www.docsity.com/en/mcat-physics-formulas/785940/

Every time you saying a "acceleration value=a" or gravity g

g is a, but a is not necessary to be g.

g on Earth is 9.8m/s2

Don't write G. That is a different stuffs. Between 2 planets. You want the Earth to tell you, you got your formula wrong? The physics department has nothing but those basic definition never ends stuffs. 

You looking at X =X0+V0t+1/2 at2

That means you are dropping on the same height, to reach the same end. That is the Moon experiment telling you that. Funny things are....they gone to Moon to do that. Is there a value that Earth is not about the same?

That will be g, you gonna tell me, you testing the a? That value on the moon is different, but the rest of the things are the same? 

When they say "displacement" it means the height, means the dropping down distance how far it travels. That will be your very very very basic definition, you shouldn't be saying height. It is the traveling straight down. 

The ending, the beginning always be at zero saying.

Maybe try this one.

The basic definition, because...

https://pb.ps-taiwan.org/modules/news/article.php?storyid=257

Except my theory, everyone can see. When you are doing the regular Physics definition, its per definition will end up on your physics lab, or experiment procedure layout.

Meaning you know the reason why you design that experiment. The beginning of the velocity will always....at zero, if you holding it on your hand.

I can say, or NASA gonna finish their exams?

That distance when you hold, will always saying that is at Zero. But...when you one day to talk about or discussing on the potential.....There is a physic side when you labeling "A Potential", that might be sometimes you really need to know your per symbol basic definition. 

Per word clearly. 

That is the essence in the physic. They have nothing but math, but in order for you to even run an one experimental, you are not going to pass through them, if you don't get your basic word definition right. 

That a = g, that is when you saying on Earth. On Earth g will always forever be 9.8m/s2

Gravity...do they label g on the moon as the g too??? The Moon's g will not be 9.8m/s2,

Do you even know why that unit standing for that m/s2?

The basic definition when the things fallen, it will accelerate on and on vertically. On the any planet, they doing exactly all the same, right to the ground, so it will always have an acceleration.