There will be no reaction force acting on the object
Newton's second law is a quantitative description of the changes that a force can produce on the motion of a body. It states that the time rate of change of the momentum of a body is equal in both magnitude and direction to the force imposed on it.
The motion of a free falling object can be described by Newton's second law of motion,
Force (F) = mass * acceleration
a = F / m
The net external force is just the weight of the object (F = W).
Substituting into the second law equation gives:
a = W / m = m * g / m = g .
The acceleration (change of velocity) of the object then becomes the gravitational acceleration.
On freely falling body their is no normal acting on that object
hence , there will be no reaction force acting on the object
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