Isaac Newton and the Gravity

When Isaac Newton was sitting down under an apple tree,

he felt an apple falling down and began to investigate the situation:

the velocity of the falling, the mass of the apple...and he discovered

THE LAW OF GRAVITY

which is a law existing all around Planet Earth

and it is the reason because everything and eveybody falls down

if we are not careful enough!

And...why is it important ?

Because thanks to this Law,

we can know how quick people or objects will reach the ground

when they are falling down.

do you remembe, children, the volume and the mass?

so, when something has got more mass, it will reach the ground quicker.

Do you remember the ballons in the class?

They fall down slowly because they don´t have a lot of mass!

But...

 the ruler falls down quickly because it has got more  mass than the baloons!

Yes, Super heroes, yes: this is the Law of Gravity!