There is no air resistance found in a vacuum, and this means that the acceleration of all objects in the vacuum at a given gravitational force (g=9.8m/s2) is unaffected by their mass.
Question : If the average cost falls, the marginal cost
Option 1: increase at a higher rate
Option 2: to fall at the same rate
Option 3: increases at a lower rate
Option 4: to fall at a higher rate
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