Question 4. (4 points) Per Newton's Second Law of Motion is formally stated as follows:
The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object.
(a) If we are dropping two objects, the acceleration is the acceleration due to gravity, a constant. Write an equation that expresses the relationship between the net force and the mass of the object. Clearly identify all variables. This expression should be in the greatest generality, based only on the statement above, and should be true regardless of units.
(b) If a 2-kg. object produces a net force of 19.6 Newtons, how much net force does a 9-kg. object exert?