Answer:
Assuming a constant force, if the mass of an object increases, the acceleration of the object will decrease
Assuming a constant force, if the mass of an object decreases, the acceleration of the object will increase
If the force applied to an object increases, the acceleration will increase
If the force applied to an object decreases, the acceleration will decrease
Step-by-step explanation:
We can answer all the 4 questions by simply referring to Newton's second law:
![F=ma](https://img.qammunity.org/2020/formulas/physics/middle-school/hoqv0uuwk5hamoxytydy5e8slsjemaiqzz.png)
where
F is the force applied to an object
m is its mass
a is its acceleration
We can re-arrange the equation as follows
![a=(F)/(m)](https://img.qammunity.org/2020/formulas/chemistry/middle-school/td26ym341u4sykjq2gaecijk44aasiymsf.png)
and we notice that:
- a is proportional to F --> this means that when force increases, the acceleration will increase as well, and when the force decreases, the acceleration will decrease as well
- a is inversely proportional to m --> this means that when the mass increases, the acceleration will decrease, and when the mass decreases, the acceleration will increase