If the mass and force of a cart is doubled would its acceleration double or quadruple? also free points < 3

Double , the force is pushed against the cart added by mass is enough to double the acceleration , and thank u :)

Saac Newton’s First Law of Motion states, “A body at rest will remain at rest, and a body in motion will remain in motion unless it is acted upon by an external force.” What, then, happens to a body when an external force is applied to it? That situation is described by Newton’s Second Law of Motion. It states, “The force acting on an object is equal to the mass of that object times its acceleration.” 

This is the answer: body 1 + engine 2