Here are the true statements about gravitational force:
- It is directed inward from the center of an object.
- It gets stronger as two objects are brought closer together.
- It gets weaker as the mass of an object decreases. (This statement can be a bit misleading, as gravitational force weakens with the decrease in mass of one of the objects but the force itself does not weaken overall; it simply changes depending on the masses involved.)
- It exists between any pair of objects.
The false statements are:
- It is directed outward from the center of an object. (Gravitational force is always an attractive force directed inward.)
- It exists only between objects that are touching one another. (Gravitational force acts at a distance and does not require contact between objects.)
So the correct responses are:
- It is directed inward from the center of an object.
- It gets stronger as two objects are brought closer together.
- It exists between any pair of objects.