To determine the magnitude of the resultant
force acting on the apple during its motion after it is dropped from rest, we
need to consider the forces acting on it:
Weight of the apple (mg): This force acts
downward due to gravity.
Drag force (): This force acts upward and opposes the motion of the apple as it
falls.
When the apple is dropped, the resultant
force acting on it can be expressed as:
pressed as: