Answer:
The force of gravity is acting on the acorn.
A frictional drag force is acting on the acorn.
The net force on the acorn is less than the force of gravity.
Step-by-step explanation:
The force of gravity is acting on the acorn is in vertically downwards direction.
A frictional drag force is acting on the acorn is in vertically upwards direction.
The net force on the acorn is given by
Net force = Force of gravity - Frictional drag force
It is always less than the force of gravity.