Question

why the Newton had invent gravity​

Answer 1

Answer:

The legend is that Newton discovered Gravity when he saw a falling apple while thinking about the forces of nature. Whatever really happened, Newton realized that some force must be acting on falling objects like apples because otherwise they would not start moving from rest.

Explanation:

Answer 2

Because Newton was an excited scientist who wanted to prove that there is an attractive force which attracts all things towards the earth..