For two objects experiencing Between them, the strength of the force increases as (blank) increases, and decreases as (blank) increases.

Question

Gravity
Mass
Distance
Force
Weight

Answer 1

For two objects experiencing gravity, the strength of the force increases as mass increases, and decreases as distance increases.

So the completed sentence would be:

For two objects experiencing gravity, the strength of the force increases as mass increases, and decreases as distance increases.