Question

What is free fall what do you mean by acceleration due to gravity?

Answer 1

free fall means the falling body will be free there is no obstruction for the falling body.
and acceleration due to gravity means the increasing of velocity(acceleration) because of gravity.

Answer 2

Answer:

In Newtonian physics, free fall is defined as the motion of an object where gravity is the only force acting upon it. ... A skydiver may be pulled towards earth by gravity, but they are also affected by air resistance, a force opposing their downward movement.