Aforce exerted on an object produces acceleration. if the mass remains the same and the acceleration is doubled, the force must be .

The force will be doubled.

Using Newton Law II,

So it can be seen in the formula that force is directly proportional to mass and acceleration.

if mass is doubled ---> force will be doubled, keeping acceleration constant.

Similarly,

if acceleration is doubled ---? force is will be doubled, keeping mass constant.

It is assumed that there is no friction, the object is in the air with no air resistance.

the independent variable, or the one that is intentionally manipulated is the speed.