Understanding the Forces

* Gravitational Force (Fg): This is the force pulling the apple downwards due to Earth's gravity. It's 1 N in this case.

* Air Resistance (Fair): This is the force acting opposite to the direction of motion, slowing the apple down. It's 0.1 N.

Calculating Net Force

The net force is the overall force acting on the apple. Since the forces are in opposite directions, we subtract the air resistance from the gravitational force:

Net Force (Fnet) = Fg - Fair

Fnet = 1 N - 0.1 N

Fnet = 0.9 N

Conclusion

The net force on the apple is 0.9 N downwards. This means the apple will accelerate downwards due to the combined effect of gravity and air resistance.