Proportional Reasoning with Newton's 2nd Law

The acceleration of an object is ​ (a)   proportional to the net force exerted upon it and ​ (b)   proportional to the mass of the object.

An object is accelerating at a rate of 8 m/s² when it suddenly has the net force upon it increased by a factor of 2. The new acceleration will be (a)   m/s²

An object is accelerating at a rate of 8 m/s² when it suddenly has the net force upon it increased by a factor of 4. The new acceleration will be (a)   m/s²

An object is accelerating at a rate of 8 m/s² when it suddenly has the net force upon it decreased by a factor of 2. The new acceleration will be (a)   m/s²

An object is accelerating at a rate of 8 m/s² when it suddenly has its mass increased by a factor of 2. The new acceleration will be (a)   m/s²

An object is accelerating at a rate of 8 m/s² when it suddenly has its mass decreased by a factor of 4. The new acceleration will be (a)   m/s²

An object is accelerating at a rate of 8 m/s² when it suddenly has the net force exerted upon it increased by a factor of 2 and its mass decreased by a factor of 4. The new acceleration will be (a)   m/s²

An object is accelerating at a rate of 8 m/s² when it suddenly has the net force exerted upon it increased by a factor of 4 and its mass increased by a factor of 2. The new acceleration will be (a)   m/s²

An object is accelerating at a rate of 8 m/s² when it suddenly has the net force exerted upon it increased by a factor of 3 and its mass increased by a factor of 4. The new acceleration will be (a)   m/s²

These force diagrams depict the magnitudes and directions of the forces acting upon four objects. In each case, the down force is the force of gravity. Rank these objects in order of their acceleration, from largest to smallest.