Final answer:
The net force on an object falling with a gravitational force of 160 N and an equal air resistance force of 160 N is zero, indicating no acceleration and a constant speed.
Step-by-step explanation:
When an object is falling down from the sky, and gravity is pulling it down with a force of 160 N while air resistance is pushing up with an equal force of 160 N, the net force is zero. This scenario is a state of dynamic equilibrium, where the forces are balanced and the object continues to move at a constant velocity. According to Newton's second law, net force is responsible for acceleration; in this case, since there is no net force, there is no acceleration, and the object moves with a constant speed.