As the launch force increase the launch velocity will Increase
Decrease
Remain unaffected

The reason for your answer to number six is because

There is a direct relationship between force and mass.
There is an inverse relationship between force and mass.
There is a direct relationship between force and acceleration.
There is an inverse relationship between force and acceleration.

As the launch force increase the launch velocity will

Increase

The reason for your answer to number six is because

There is a direct relationship between force and acceleration.

Explanation:

It is known all over the place that, there is a direct relationship between Force and acceleration of an object leading to an increase in force being directly proportional to the increase in the acceleration of the given object and vice versa.

multiply 2kg by latent heat of vap