Gravity has traditionally been defined as a force of attraction between things that have

The gravity has traditionally been defined as a force of attraction between things that have masses.

Explanation:

Gravitational force is a type of attractive force. It is because of this force, that we are able to walk on this Earth. Also due to gravitational force, the solar system and the galaxies are existing in the universe. Sir Issac Newton first discovered this force. He postulated the universal law of gravity. And according to this law, the gravitational force will be acting between the objects having masses and separated by a distance. So in this law, it states that gravitational law is directly proportional to the product of masses and inversely proportional to the square of the distance between them.

Thus, the gravity has traditionally been defined as a force of attraction between things that have masses.

the diagram which shows forces as either balanced = same speed or unbalanced = accelerarting