In order to impart the greatest momentum to an object you should?

In order to impart the greatest momentum to an object, you should both exert the largest force possible upon the object in question and extend that force for as long as possible.

This is so because the greater the force acting on an object results in a greater change in velocity, which in turn yields a greater momentum.

In addition to exerting the largest force possible on an object, you should also extend that force over the longest period of time as possible, as the sustained force also produces more momentum.

As p= m•v, the best method in obtaining the greatest amount for 'p' would be to manipulate either the 'm' or 'v' variables.

Force= acceleration= change in velocity= MOMENTUM.

Greater amount of time= MOMENTUM