Answer:
They are inversely related; As acceleration decreases, mass increases; As acceleration decreases, mass increases.
Explanation:
This is to keep the force the same.
F=2m•0.5a
F=0.5m•2a
Both forces have the same value, but they have acceleration and masses that are inversely proportional to eachother.
In real life, you can see it with a recoil gun. The bullet and the gun have equal but opposite forces, but the bullet accelerates faster than the gun due to its smaller mass, while the gun recoils at a slower acceleration due to its larger mass.