Why does an object accelerate during free fall
A gravitational force (F = G M m / R² )is acting on the object of mass m which is freely falling.
According to newton's second law,
F = m a
a = F/m
So, if a force is acting on an object, it will have some acceleration. In case of freely falling objects on earth, the value of acceleration due to gravity is constant as
a = 9.8 m/s²