Final answer:
The relationship between acceleration and net force is directly proportional according to Newton's Second Law of Motion. If force doubles, acceleration also doubles as long as mass remains constant. The direction of the acceleration is the same as that of the force.
Step-by-step explanation:
When the mass is constant, the relation between the acceleration and the net force or total force acting on the object is that they are directly proportional. This concept is encapsulated in Newton's Second Law of Motion, which states that the acceleration of a system is directly proportional to and in the same direction as the net external force acting on the system, and inversely proportional to its mass.
This means that if, for instance, the force on an object were to double, the acceleration would also double, assuming the object's mass stays the same. It's also crucial to understand that the direction of the acceleration will align with the direction of the net force.
On the contrary, if the force is constant and the mass changes, the acceleration would be inversely proportional to the mass; the larger the mass, the smaller the acceleration produced by a given force.
Learn more about Newton's Second Law of Motion